CN1119850C - Transformer equipment for increasing energy utilization rate of wind-driven electric generation - Google Patents
Transformer equipment for increasing energy utilization rate of wind-driven electric generation Download PDFInfo
- Publication number
- CN1119850C CN1119850C CN 00120550 CN00120550A CN1119850C CN 1119850 C CN1119850 C CN 1119850C CN 00120550 CN00120550 CN 00120550 CN 00120550 A CN00120550 A CN 00120550A CN 1119850 C CN1119850 C CN 1119850C
- Authority
- CN
- China
- Prior art keywords
- switch transistor
- capacitor
- flow tube
- continued flow
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Rectifiers (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The present invention relates to a power transmission and conversion device for improving availability ratio of a wind power generation device, which is orderly composed of a PFC type three-phase rectifying and filtering circuit, a storage battery, a three-phase inversion bridge controlled by SPWM and three groups of LC filters. Because the PFC type three-phase rectifying and filtering circuit is composed of a reactor, a positive and negative value rectifier filter, a pulse-width modulation drive circuit, an input power factor correction pulse-width modulation control circuit and a positive-negative rectifying output voltage detecting circuit, the device can uplift electric energy generated by low speed wind energy and unstable wind energy to stable and available electric energy in the process of wind power generation. By using the device, a speed regulating system and a speed raising transmission device are not arranged in a wind power generation device, and blades of a wind wheel can be made into the blades with fixed blade pitches.
Description
The present invention relates to the used for wind-energy power generation electrical domain, particularly wind power generation send transformation device.
The problem of wind energy utilization is that how more reasonably to solve wind energy concentration low, randomness, intermittence ... etc. problem, and how to adopt accumulation of energy mode deallocation to close, make the user obtain stablizing high-quality electric energy.Existing wind power generation send transformation device normally to utilize storage battery to store certain electric energy, uses storage battery power supply when calm.In order to maximally utilise wind energy, prior art must be provided with governing system, overgear in wind power generation plant.Like this constitute following defective: 1. mechanism's complexity height, manufacturing expense height, reliability decrease; 2. energy does not utilize to greatest extent, and low speed and high speed Wind Power Utilization get bad, and capacity usage ratio is low.3. the quality of power supply that outputs to the user is bad, the poor stability of its voltage and frequency.
The purpose of this invention is to provide a kind ofly make that wind power generation plant mechanical structure is simple, low cost of manufacture, reliable, wind energy utilization is high, the stable wind power generation of power supply send transformation device.
For achieving the above object, one of technical scheme of the present invention is: a kind of device that improves the wind power generation capacity usage ratio, and this device rises voltage stabilizing circuit, storage battery, SPWM half-bridge converter and output filter by rectifier filter, wide region pump and forms; Two outputs of the input 1 of rectifier filter, end 2 order phase permanent magnet generatores, its output 3, end 4 connect the input that the wide region pump rises voltage stabilizing circuit, and output 5, end 4 that the wide region pump rises voltage stabilizing circuit meet storage battery B respectively
1Positive pole and negative pole, two input termination end 5 of SPWM half-bridge converter, end 4, the input that output 6, end 7 connect output filter respectively, the output 8 of output filter, end 9 order phase loads.
Rectifier filter is by diode D
1, diode D
2, diode D
3, diode D
4With capacitor C
1Form; Diode D
1With diode D
2, diode D
3With diode D
4Be connected into behind the single-phase rectification bridge and capacitor C
1Parallel connection, 2 parallel connection points form output 3, end 4, and two other interface of this rectifier bridge forms input 1, end 2.
The wide region pump rises voltage stabilizing circuit by reactor L
1, switch transistor T
1, diode D
5, capacitor C
2, capacitor C
3, resistance R
1, resistance R
2, driver element Q
1With control unit DY
1Form; Reactor L
1A termination end 3, another terminating diode D
5Positive pole and switch transistor T
1Collector electrode, switch transistor T
1Control termination driver element Q
1Output, switch transistor T
1Transmitting terminal and driver element Q
1Common port connect common port 4, resistance R after connecting
1And resistance R
2Series connection back and capacitor C
2, capacitor C
3Parallel connection, resistance R
1The other end and diode D
5Negative pole connects formation output 5, resistance R
2The other end and common port 4 link resistance R
1And resistance R
2Be connected in series and a little meet control unit DY
1Voltage input end 1, driver element Q
1Input termination control unit DY
1Output 2, control unit DY
1Input termination current transformer S
1, control unit DY
1Public termination common port 4.
The SPWM half-bridge converter is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22With Single-phase SPWM generator DY
2, voltage negative feedback unit DY
3, over-current detection unit DY
4Form; Switch transistor T
11And switch transistor T
12, switch transistor T
21And switch transistor T
22, continued flow tube D
11With continued flow tube D
12, continued flow tube D
21With continued flow tube D
22Be connected across on end 5, the end 4 switch transistor T respectively after the series connection
11And switch transistor T
12, continued flow tube D
11With continued flow tube D
12The series connection mid point connect inductance L after connecting
2End 7, switch transistor T
21And switch transistor T
22, continued flow tube D
21With continued flow tube D
22The series connection mid point connect inductance L after connecting
2 End 6, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22Each output respectively correspondence be connected on switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22The control utmost point, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22Each input respectively correspondence be connected on Single-phase SPWM generator DY
2Output on, Single-phase SPWM generator DY
2Two input termination voltage negative feedback unit DY
3, over-current detection unit DY
4Output, voltage negative feedback unit DY
3Two inputs connect respectively the end 6, the end 7, over-current detection unit DY
4Two inputs meet current transformer S respectively
41, current transformer S
42
Output filter is by inductance L
2With capacitor C
41, capacitor C
42, capacitor C
43Form; Inductance L
2Be made of two groups of coils, wherein a winding is on end 6, end 8, and another winding is being held 7, held on 9 capacitor C
41With capacitor C
42Series connection back and capacitor C
43Together and be connected in the end 8, the end 9 on, capacitor C
41With capacitor C
42The middle interface of series connection connects end 4.
Two of technical scheme of the present invention is: a kind of transformation device that send that improves the wind power generation capacity usage ratio, and this device is controlled three phase inverter bridge by PFC type three phase rectifier filter circuit, storage battery, SPWM, and three groups of LC filters and common port PE form; The input 1 of PFC type three phase rectifier filter circuit, end 2, end 3 connect three outputs of three-phase permanent magnet electricity generator respectively, its common port PE connects the neutral point of three-phase permanent magnet electricity generator, and two outputs 8 of PFC type three phase rectifier filter circuit, end 9 meet series connection storage battery B respectively
11, B
12Two ends, its another output 7 meets storage battery B
11, B
12Middle interface after connect PE end again; Positive-negative power termination end 8, the end 9 of SPWM control three phase inverter bridge, its three-phase output end connects end 10, end 11, the end 12 of three groups of LC filters, the earth point of three groups of LC filters meets PE, and its three outputs 13, end 14, end 15 connect U, V, the W end of threephase load, and the PE utmost point connects the neutral point of load.
PFC type three phase rectifier filter circuit is by reactor L
11, reactor L
12, reactor L
13, diode D
1, diode D
2, diode D
3, diode D
4, diode D
5, diode D
6, capacitor C
11, capacitor C
12, capacitor C
13, capacitor C
21, capacitor C
22, capacitor C
31, capacitor C
32, resistance R
31, resistance R
32, resistance R
33, resistance R
11, resistance R
12, resistance R
21, resistance R
22, rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3, switching tube Q
1, switching tube Q
2, switching tube Q
3, detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3, testing circuit DY
4Form; Rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3Each ac input end be connected across respectively the end 4, the end 5, the end 6 and common port PE on, its each rectification output end meets switching tube Q respectively
1, switching tube Q
2, switching tube Q
3Source electrode and drain electrode, switching tube Q
1, switching tube Q
2, switching tube Q
3The control utmost point 28, the control utmost point 30, the control utmost point 32 and source electrode 27, source electrode 29, source electrode 31 connect respectively and detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3Output.Detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3Input current signal end 16, end 19, end 22 meet current transformer S respectively
11, current transformer S
12, current transformer S
13, its input voltage signal end 18, end 21, end 24 be connecting resistance R respectively
31, resistance R
32, resistance R
33, resistance R
31, resistance R
32, resistance R
33The other end connect end 1, end 2, end 3 and capacitor C respectively
11, capacitor C
12, capacitor C
13, capacitor C
11, capacitor C
12, capacitor C
13Another termination PE end; Testing circuit DY
4Two input termination end 25, end 26, ground wire meets PE, its three output connects respectively and detects control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3End 17, the end 20, the end 23; Diode D
1With diode D
2, diode D
3With diode D
4, diode D
5With diode D
6Be connected across on end 8, the end 9 after being connected into three-phase commutation bridge, its AC input terminal connects end 4, end 5, end 6, capacitor C respectively
21And capacitor C
22, capacitor C
31And capacitor C
32Be connected across after the series connection respectively on end 8, the end 9, become end 7 and PE to join after its interface joins; Resistance R
11, resistance R
12, resistance R
22, resistance R
21Be connected across after the series connection on end 8, the end 9, interface meets PE in the middle of it, and two tie points 25, tie points 26 meet testing circuit DY in addition
4Reactor L
11, reactor L
12, reactor L
13Be connected on end 1, end 4 respectively, end 2, end 5 are between end 3, the end 6.
SPWM control three phase inverter bridge is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, continued flow tube D
31, continued flow tube D
32, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32, three-phase SPWM generator DY
5, phase-locked isochronous controller DY
6, voltage negative feedback unit DY
7, over-current detection unit DY
8Form; Switch transistor T
11And switch transistor T
12, switch transistor T
21And switch transistor T
22, switch transistor T
31And switch transistor T
32, continued flow tube D
11With continued flow tube D
12, continued flow tube D
21With continued flow tube D
22, continued flow tube D
31With continued flow tube D
32Be connected across on end 8, the end 9 switch transistor T respectively after the series connection
11And switch transistor T
12, continued flow tube D
11With continued flow tube D
12The series connection mid point connect the back and become end 10 to meet reactor L
41, switch transistor T
21And switch transistor T
22, continued flow tube D
21With continued flow tube D
22The series connection mid point connect the back and become end 11 to meet reactor L
42, switch transistor T
31And switch transistor T
32, continued flow tube D
31With continued flow tube D
32The series connection mid point connect the back and become end 12 to meet reactor L
43, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32Output separately be connected on switch transistor T respectively
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32Control extremely go up and the input termination three-phase SPWM generator DY of above each driving stage
5Each output of correspondence on, three-phase SPWM generator DY
5The phase-locked isochronous controller DY of each input control termination
6, voltage negative feedback unit DY
7, over-current detection unit DY
8Output, voltage negative feedback unit DY
7Three inputs connect respectively the end 10, the end 11, the end 12, over-current detection unit DY
8Three inputs meet current transformer S respectively
51, current transformer S
52, current transformer S
53
Three groups of LC filters are by reactor L
41, reactor L
42, reactor L
43With capacitor C
41, capacitor C
42, capacitor C
43Form; Reactor L
41With capacitor C
41, reactor L
42With capacitor C
42, reactor L
43With capacitor C
43Series connection respectively, the other end of each reactor connect end 10, end 11, end 12 respectively, and another termination PE of each capacitor, the mid point after the series connection become the end 13,14,15 of this device respectively, just three output U, V, W.
The system that is made of first technical scheme is adapted to the single-phase unit of small-size wind power-generating of isolated operation, and three camera set to medium above capacity can adopt second technical scheme.Simultaneously second technical scheme is also applicable to the situation of wind power generation and electrical network parallel running.
Because the present invention has adopted the wide region pump to rise voltage stabilizing circuit or PFC type three phase rectifier filter circuit, make low velocity wind energy and be interrupted unstable wind energy and be fully used, because realization of the present invention, wind energy receiving device needn't be made the variable pitch structure, traditional governing system will no longer need, thereby make wind energy conversion system simple in structure, cheap, operating cost is low, it is more reliable and more stable to power.
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is typical wind one electric energy conversion device schematic diagram.
Fig. 2 send the transformation device circuit block diagram for single-phase wind power generation.
Fig. 3 send the transformation device circuit block diagram for the three-phase wind power generation.
Fig. 4 send transformation device major loop and controlling party block diagram in detail for single-phase wind power generation.
Fig. 5 send transformation device major loop and controlling party block diagram in detail for the three-phase wind power generation.
Fig. 2, a kind of single-phase wind power generation shown in Figure 4 send transformation device, and this device rises voltage stabilizing circuit, storage battery, SPWM half-bridge converter and output filter by rectifier filter, wide region pump and forms; Two outputs of the input 1 of rectifier filter, end 2 order phase permanent magnet generatores, its output 3, end 4 connect the input that the wide region pump rises voltage stabilizing circuit, and output 5, end 4 that the wide region pump rises voltage stabilizing circuit meet storage battery B respectively
1Positive pole and negative pole, two input termination end 5 of SPWM half-bridge converter, end 4, the input that output 6, end 7 connect output filter respectively, the output 8 of output filter, end 9 order phase loads.
Rectifier filter is by diode D
1, diode D
2, diode D
3, diode D
4With capacitor C
1Form; Diode D
1With diode D
2, diode D
3With diode D
4Be connected into behind the single-phase rectification bridge and capacitor C
1Parallel connection, 2 parallel connection points form output 3, end 4, and two other interface of this rectifier bridge forms input 1, end 2.
The wide region pump rises voltage stabilizing circuit by reactor L
1, switch transistor T
1, diode D
5, capacitor C
2, capacitor C
3, resistance R
1, resistance R
2, driver element Q
1With control unit DY
1Form; Reactor L
1A termination end 3, another terminating diode D
5Positive pole and switch transistor T
1Collector electrode, switch transistor T
1Control termination driver element Q
1Output, switch transistor T
1Transmitting terminal and driver element Q
1Common port connect common port 4, resistance R after connecting
1And resistance R
2Series connection back and capacitor C
2, capacitor C
3Parallel connection, resistance R
1The other end and diode D
5Negative pole connects formation output 5, resistance R
2The other end and common port 4 link resistance R
1And resistance R
2Be connected in series and a little meet control unit DY
1Voltage input end 1, driver element Q
1Input termination control unit DY
1Output 2, control unit DY
1Input termination current transformer S
1, control unit DY
1Public termination common port 4.
The SPWM half-bridge converter is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22With Single-phase SPWM generator DY
2, voltage negative feedback unit DY
3, over-current detection unit DY
4Form; Switch transistor T
11And switch transistor T
12, switch transistor T
21And switch transistor T
22, continued flow tube D
11With continued flow tube D
12, continued flow tube D
21With continued flow tube D
22Be connected across on end 5, the end 4 switch transistor T respectively after the series connection
11And switch transistor T
12, continued flow tube D
11With continued flow tube D
12The series connection mid point connect inductance L after connecting
2End 7, switch transistor T
21And switch transistor T
22, continued flow tube D
21With continued flow tube D
22The series connection mid point connect inductance L after connecting
2 End 6, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22Each output respectively correspondence be connected on switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22The control utmost point, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22Each input respectively correspondence be connected on Single-phase SPWM generator DY
2Output on, Single-phase SPWM generator DY
2Two input termination voltage negative feedback unit DY
3, over-current detection unit DY
4Output, voltage negative feedback unit DY
3Two inputs connect respectively the end 6, the end 7, over-current detection unit DY
4Two inputs meet current transformer S respectively
41, current transformer S
42
Output filter is by inductance L
2With capacitor C
41, capacitor C
42, capacitor C
43Form; Inductance L
2Be made of two groups of coils, wherein a winding is on end 6, end 8, and another winding is being held 7, held on 9 capacitor C
41With capacitor C
42Series connection back and capacitor C
43Together and be connected in the end 8, the end 9 on, capacitor C
41With capacitor C
42The middle interface of series connection connects end 4.
Wind energy conversion system FL is a fixing slurry distance, the high-efficient wind turbine that possesses the aerodynamics requirement, its output shaft drives a magneto alternator FD, because used fixedpiston wind energy conversion system and magneto alternator, makes this two-part designs simplification, cost reduce, safeguard simple.
Generator FD output is received by diode D
1, diode D
2, diode D
3, diode D
4On the full-wave rectification brachium pontis of forming, the output of rectifier bridge meets capacitive filter C
1, when generator for electricity generation, capacitor C
1On be charged to the peak value of generator output voltage.
Capacitor C
1Two terminate to by reactor L
1, switch transistor T
1, diode D
5, capacitor C
2, capacitor C
3, resistance R
1, resistance R
2, driver element Q
1, control unit DY
1The wide region pump of being formed rises the switch transistor T of voltage stabilizing circuit 2 these circuit
1, be connected on reactor L
1With diode D
5Between, resistance R
1, resistance R
2After the voltage that has raise carried out the dividing potential drop sampling, sampling voltage delivered to control unit DY
1, capacitor C
2, capacitor C
3Be connected on diode D
5Afterwards, in capacitor C
2, capacitor C
3The last voltage that has obtained to raise as single-phase wind generator system, generally is raised to voltage about 390V, and capacitor C
1On voltage can be in 100-300V wide region change, it is from unsettled wind power generation voltage, the simple principle that pump rises is a switch transistor T
1Capacitor C during conducting
1On electric energy be stored in reactor L in the magnetic energy mode of electric current
1In, work as switch transistor T
1During shutoff, reactor L
1On magnetic energy change high voltage into and by diode D
5To capacitor C
2, capacitor C
3Charging is through resistance R
1, resistance R
2Dividing potential drop obtains the feedback voltage signal after boosting, again through control unit DY
1To switch transistor T
1Adjust, make switch transistor T
1Pulse break-make interval variation, thereby stablize capacitor C
2, capacitor C
3On voltage.
Storage battery B
1By switch J
1Same capacitor C
2, capacitor C
3Parallel connection, the pump up voltage is by diode D
5To capacitor C
2, capacitor C
3In the time of charging, in fact to storage battery B
1Charging in storage battery, in order to change battery, is provided with switch J with electrical power storage
1,, be provided with current sensor S for safe charging
1, by current sensor S
1Obtain the charging current signal, in case when the generation of overcharging, current sensor S then
1The signal of output is by control unit DY
1Handle back control switch pipe T
1, make charging current not too large.
Battery B
1What connect later is inverter bridge, and it is transformed into alternating current with high direct voltage (390V), and this inverter bridge is with SPWM mode (sinusoidal pulse width modulation) work, and it is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22, Single-phase SPWM generator DY
2Unit, voltage negative feedback unit DY
3, over-current detection unit DY
4Form.Its output becomes the series of rectangular ripple of Sine Wave Pulse Width Modulation, and through behind the filter, what export to load still is sinusoidal wave.Voltage negative feedback unit DY
3With over-current detection unit DY
4The effect of two unit makes the output voltage of inverter bridge stablize because of negative feedback, and electric current is because of current transformer S
41, current transformer S
42The sampling and monitored, in case external loading generation overcurrent, inverter can not exported super-high-current and suffer damage.
The a large amount of interference that produce in order to eliminate SPWM modulation, electrical appliance on every side is unfavorable and capacity load to the infringement of inverter, inserted by inductance L between inverter and the load
2, capacitor C
41, capacitor C
42, capacitor C
43The output filter of forming disturbs pulse feature and is suppressed.
Fig. 3, a kind of three-phase wind power generation shown in Figure 5 send transformation device, and this device is controlled three phase inverter bridge by PFC type three phase rectifier filter circuit, storage battery, SPWM, and three groups of LC filters and common port PE form; The input 1 of PFC type three phase rectifier filter circuit, end 2, end 3 connect three outputs of three-phase permanent magnet electricity generator respectively, its common port PE connects the neutral point of three-phase permanent magnet electricity generator, and two outputs 8 of PFC type three phase rectifier filter circuit, end 9 meet series connection storage battery B respectively
11, B
12Two ends, its another output 7 meets storage battery B
11, B
12Middle interface after connect PE end again; Positive-negative power termination end 8, the end 9 of SPWM control three phase inverter bridge, its three-phase output end connects end 10, end 11, the end 12 of three groups of LC filters, the earth point of three groups of LC filters meets PE, and its three outputs 13, end 14, end 15 connect U, V, the W end of threephase load, and the PE utmost point connects the neutral point of load.
PFC type three phase rectifier filter circuit is by reactor L
11, reactor L
12, reactor L
13, diode D
1, diode D
2, diode D
3, diode D
4, diode D
5, diode D
6, capacitor C
11, capacitor C
12, capacitor C
13, capacitor C
21, capacitor C
22, capacitor C
31, capacitor C
31, resistance R
31, resistance R
32, resistance R
33, resistance R
11, resistance R
12, resistance R
21, resistance R
22, rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3, switching tube Q
1, switching tube Q
2, switching tube Q
3, detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3, testing circuit DY
4Form; Rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3Each ac input end be connected across respectively the end 4, the end 5, the end 6 and common port PE on, its each rectification output end meets switching tube Q respectively
1, switching tube Q
2, switching tube Q
3Source electrode and drain electrode, switching tube Q
1, switching tube Q
2, switching tube Q
3The control utmost point 28, the control utmost point 30, the control utmost point 32 and source electrode 27, source electrode 29, source electrode 31 connect respectively and detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3Output.Detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3Input current signal end 16, end 19, end 22 meet current transformer S respectively
11, current transformer S
12, current transformer S
13, its input voltage signal end 18, end 21, end 24 be connecting resistance R respectively
31, resistance R
32, resistance R
33, resistance R
31, resistance R
32, resistance R
33The other end connect end 1, end 2, end 3 and capacitor C respectively
11, capacitor C
12, capacitor C
13, capacitor C
11, capacitor C
12, capacitor C
13Another termination PE end; Testing circuit DY
4Two input termination end 25, end 26, ground wire meets PE, its three output connects respectively and detects control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3End 17, the end 20, the end 23; Diode D
1With diode D
2, diode D
3With diode D
4, diode D
5With diode D
6Be connected across on end 8, the end 9 after being connected into three-phase commutation bridge, its AC input terminal connects end 4, end 5, end 6, capacitor C respectively
21And capacitor C
22, capacitor C
31And capacitor C
32Be connected across after the series connection respectively on end 8, the end 9, become end 7 and PE to join after its interface joins; Resistance R
11, resistance R
12, resistance R
22, resistance R
21Be connected across after the series connection on end 8, the end 9, interface meets PE in the middle of it, and two tie points 25, tie points 26 meet testing circuit DY in addition
4Reactor L
11, reactor L
12, reactor L
13Be connected on end 1, end 4 respectively, end 2, end 5 are between end 3, the end 6.
SPWM control three phase inverter bridge is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, continued flow tube D
31, continued flow tube D
32, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32, three-phase SPWM generator DY
5, phase-locked isochronous controller DY
6, voltage negative feedback unit DY
7, over-current detection unit DY
8Form; Switch transistor T
11And switch transistor T
12, switch transistor T
21And switch transistor T
22, switch transistor T
31And switch transistor T
32, continued flow tube D
11With continued flow tube D
12, continued flow tube D
21With continued flow tube D
22, continued flow tube D
31With continued flow tube D
32Be connected across on end 8, the end 9 switch transistor T respectively after the series connection
11And switch transistor T
12, continued flow tube D
11With continued flow tube D
12The series connection mid point connect the back and become end 10 to meet reactor L
41, switch transistor T
21And switch transistor T
22, continued flow tube D
21With continued flow tube D
22The series connection mid point connect the back and become end 11 to meet reactor L
42, switch transistor T
31And switch transistor T
32, continued flow tube D
31With continued flow tube D
32The series connection mid point connect the back and become end 12 to meet reactor L
43, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32Output separately be connected on switch transistor T respectively
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32Control extremely go up and the input termination three-phase SPWM generator DY of above each driving stage
5Each output of correspondence on, three-phase SPWM generator DY
5The phase-locked isochronous controller DY of each input control termination
6, voltage negative feedback unit DY
7, over-current detection unit DY
8Output, voltage negative feedback unit DY
7Three inputs connect respectively the end 10, the end 11, the end 12, over-current detection unit DY
8Three inputs meet current transformer S respectively
51, current transformer S
52, current transformer S
53
Three groups of LC filters are by reactor L
41, reactor L
42, reactor L
43With capacitor C
41, capacitor C
42, capacitor C
43Form; Reactor L
41With capacitor C
41, reactor L
42With capacitor C
42, reactor L
43With capacitor C
43Series connection respectively, the other end of each reactor connect end 10, end 11, end 12 respectively, and another termination PE of each capacitor, the mid point after the series connection become the end 13,14,15 of this device respectively, just three output U, V, W.
As seen from Figure 5, it has changed following content than Fig. 4: used three-phase permanent magnet electricity generator, rectifier filter and wide region pump have been risen voltage stabilizing circuit replaced by PFC type current rectifying and wave filtering circuit; The SPWM half-bridge converter makes the SPWM three phase inverter bridge into; Increased phase-locked Synchronization Control link.
Wind energy conversion system FL drives three-phase permanent magnet electricity generator FD, and the three phase winding output ACs electricity AC200-400V of three-phase permanent magnet electricity generator FD sends into PFC type current rectifying and wave filtering circuit.The PFC type circuit that uses is connected into the three-phase form, and every all have reactor L mutually
11, reactor L
12, reactor L
13With positive negative value rectifier filter (diode D
1, diode D
2, diode D
3, diode D
4, diode D
5, diode D
6And capacitor C
21, capacitor C
31, capacitor C
22, capacitor C
32), pulse-width modulation drive circuit (rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3, switching tube Q
1, switching tube Q
2, switching tube Q
3) input power factor correction control circuit for pulse-width modulation (detection control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3The unit), by sample resistance R
11, resistance R
12, resistance R
21, resistance R
22The positive negative value rectifier output voltage testing circuit DY of signal is provided
4Deng form.Provide optimum power factor by these PFC type current rectifying and wave filtering circuits that constitute to generator FD, generator FD sends voltage when wide region changes, can both be made into its voltage+390V and-390V.
Capacitor C
21, capacitor C
31With capacitor C
22, capacitor C
32Be used for constituting the energy storage and the filter circuit of the three phase inverter bridge of the alternating current path of PFC type circuit and back, two groups of high voltage storage battery B that voltage equates
11With storage battery B
12Storage ± 390V direct current, it stores with the direct current form after the voltage lifting and feedback stability of pfc circuit passed through in wind-driven generator instability energy source.
SPWM control three phase inverter bridge is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
31, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, continued flow tube D
31, continued flow tube D
32, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32Form, its signal is from three-phase SPWM generator DY
5, the SPWM generator is a three-phase sine-wave pulse-width modulator, the signal that it produces makes switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32Switch on request, thereby output is by the pulse of sine wave modulation, owing to be subjected to voltage feedback unit DY
7With current feedback cells D Y
8Control, the three phase sine voltage amplitude of output is stablized, the inverter power element is protected during output overloading.
In order to eliminate the interference that brings because of pulse modulation, at output reactor L
41, capacitor C
41, reactor L
42, capacitor C
42, reactor L
43, capacitor C
43The filter that constitutes purifies output voltage, makes the user obtain high-quality sinusoidal voltage.
Current transformer S
11Current transformer S
12, current transformer S
13Summation current transformer S
51, current transformer S
52, current transformer S
53Be respectively input and output end current instrument transformer, respectively pfc circuit (detected control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3) and over-current detection unit (DY
8) current signal is provided.
Diverter switch J
31, diverter switch J
32Be used for the switching that the wind power generation plant power supply is transformed into mains supply, and the parallel running of these two electric systems is switched.Energy storage storage battery B in wind power generation plant is used as specially when electrical network provides the use occasion of electric energy, and this installs
11, storage battery B
12Can save, with the total cost of economy system.
For the voltage-phase that strictly makes the wind power generation three-phase electricity with the electrical network unanimity, to guarantee the parallel running of two systems, introduced phase-locked synchronous control unit DY
6
Each part and the unit of above circuit all are existing current techiques, and these circuit make the unstable energy of wind power generation stably to utilize through combination of the present invention, have improved the wind power generation energy utilization ratio.
Be converted to the device of electric energy for other unstable energy,, can use circuit theory of the present invention equally, unsettled electric energy is changed into the AC energy of amplitude and frequency stabilization as morning and evening tides generating, wave-power device.
Claims (10)
1. transformation device that send that improves the wind power generation capacity usage ratio, it is characterized in that: this device rises voltage stabilizing circuit, storage battery, SPWM half-bridge converter and output filter by rectifier filter, wide region pump and forms; Two outputs of the input of rectifier filter (1), (2) order phase permanent magnet generator, its output (3), (4) connect the input that the wide region pump rises voltage stabilizing circuit, and output (5), (4) that the wide region pump rises voltage stabilizing circuit meet storage battery B respectively
1Positive pole and negative pole, the SPWM half-bridge converter two the input termination end (5), the end (4), output (6), (7) connect the input of output filter respectively, the output of output filter (8), (9) order phase load.
2. raising wind power generation capacity usage ratio according to claim 1 send transformation device, it is characterized in that: described rectifier filter is by diode D
1, diode D
2, diode D
3, diode D
4With capacitor C
1Form; Diode D
1With diode D
2, diode D
3With diode D
4Be connected into behind the single-phase rectification bridge and capacitor C
1Parallel connection, 2 parallel connection points form output (3), (4), and two other interface of this rectifier bridge forms input (1), (2).
3. raising wind power generation capacity usage ratio according to claim 1 send transformation device, it is characterized in that: described wide region pump rises voltage stabilizing circuit by reactor L
1, switch transistor T
1, diode D
5, capacitor C
2, capacitor C
3, resistance R
1, resistance R
2, driver element Q
1With control unit DY
1Form; Reactor L
1A termination end (3), another terminating diode D
5Positive pole and switch transistor T
1Collector electrode, switch transistor T
1Control termination driver element Q
1Output, switch transistor T
1Transmitting terminal and driver element Q
1Common port connect common port (4), resistance R after connecting
1And resistance R
2Series connection back and capacitor C
2, capacitor C
3Parallel connection, resistance R
1The other end and diode D
5Negative pole connects formation output (5), resistance R
2The other end and common port (4) link resistance R
1And resistance R
2Be connected in series and a little meet control unit DY
1Voltage input end (1), driver element Q
1Input termination control unit DY
1Output (2), control unit DY
1Input termination current transformer S
1, control unit DY
1Public termination common port (4).
4. raising wind power generation capacity usage ratio according to claim 1 send transformation device, it is characterized in that: described SPWM half-bridge converter is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22With Single-phase SPWM generator DY
2, voltage negative feedback unit DY
3, over-current detection unit DY
4Form; Switch transistor T
11And switch transistor T
12, switch transistor T
21And switch transistor T
22, continued flow tube D
11With continued flow tube D
12, continued flow tube D
21With continued flow tube D
22Be connected across on end (5), the end (4) switch transistor T respectively after the series connection
11And switch transistor T
12, continued flow tube D
11With continued flow tube D
12The series connection mid point connect inductance L after connecting
2End (7), switch transistor T
21And switch transistor T
22, continued flow tube D
21With continued flow tube D
22The series connection mid point connect inductance L after connecting
2End (6), driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22Each output respectively correspondence be connected on switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22The control utmost point, driver element Q
11, driver element Q
12, driver element Q
21, driver element Q
22Each input respectively correspondence be connected on Single-phase SPWM generator DY
2Output on, Single-phase SPWM generator DY
2Two input termination voltage negative feedback unit DY
3, over-current detection unit DY
4Output, voltage negative feedback unit DY
3Two inputs connect respectively end (6), the end (7), over-current detection unit DY
4Two inputs meet current transformer S respectively
41, current transformer S
42
5. raising wind power generation capacity usage ratio according to claim 1 send transformation device, it is characterized in that: described output filter is by inductance L
2With capacitor C
41, capacitor C
42, capacitor C
43Form; Inductance L
2Be made of two groups of coils, wherein a winding is on end (6), (8), and capacitor C is being held on (7), (9) in another winding
41With capacitor C
42Series connection back and capacitor C
43Together and be connected on end (8), (9) capacitor C
41With capacitor C
42The middle interface of series connection connects end (4).
6. transformation device that send that improves the wind power generation capacity usage ratio, it is characterized in that: this device is controlled three phase inverter bridge by PFC type three phase rectifier filter circuit, storage battery, SPWM, and three groups of LC filters and common port PE form; The input (1) of PFC type three phase rectifier filter circuit, end (2), end (3) connect three outputs of three-phase permanent magnet electricity generator respectively, its common port PE connects the neutral point of three-phase permanent magnet electricity generator, and two outputs (8) of PFC type three phase rectifier filter circuit, end (9) meet the storage battery B of series connection respectively
11With storage battery B
12Two ends, its another output (7) meets storage battery B
11With storage battery B
12Middle interface after connect PE end again; Positive-negative power termination end (8), the end (9) of SPWM control three phase inverter bridge, its three-phase output end connects end (10), end (11), the end (12) of three groups of LC filters, the earth point of three groups of LC filters meets PE, its three outputs (13), end (14), end (15) connect U, V, the W end of threephase load, and the PE utmost point connects the neutral point of load.
7. raising wind power generation capacity usage ratio according to claim 6 send transformation device, it is characterized in that: described PFC type three phase rectifier filter circuit is by reactor L
11, reactor L
12, reactor L
13, diode D
1, diode D
2, diode D
3, diode D
4, diode D
5, diode D
6, capacitor C
11, capacitor C
12, capacitor C
13, capacitor C
21, capacitor C
22, capacitor C
31, capacitor C
32, resistance R
31, resistance R
32, resistance R
33, resistance R
11, resistance R
12, resistance R
21, resistance R
22, rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3, switching tube Q
1, switching tube Q
2, switching tube Q
3, detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3, testing circuit DY
4Form; Rectifier bridge Z
1, rectifier bridge Z
2, rectifier bridge Z
3Each ac input end be connected across respectively on end (4), end (5), end (6) and the common port PE, its each rectification output end meets switching tube Q respectively
1, switching tube Q
2, switching tube Q
3Source electrode and drain electrode, switching tube Q
1, switching tube Q
2, switching tube Q
3The control utmost point (28), (30), (32) and source electrode (27), (29), (31) connect respectively and detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3Output.Detect control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3Input current signal end (16), (19), (22) meet current transformer S respectively
11, current transformer S
12, current transformer S
13, its input voltage signal end (18), (21), (24) are connecting resistance R respectively
31, resistance R
32, resistance R
33, resistance R
31, resistance R
32, resistance R
33The other end connect respectively end (1), the end (2), the end (3) and capacitor C
11, capacitor C
12, capacitor C
13, capacitor C
11, capacitor C
12, capacitor C
13Another termination PE end; Testing circuit DY
4Two input termination end (25), (26), ground wire meets PE, its three output connects respectively and detects control drive unit DY
1, detect control drive unit DY
2, detect control drive unit DY
3End (17), (20), (23); Diode D
1With diode D
2, diode D
3With diode D
4, diode D
5With diode D
6Be connected across on end (8), the end (9) after being connected into three-phase commutation bridge, its AC input terminal connects end (4), end (5), end (6), capacitor C respectively
21And capacitor C
22, capacitor C
31And capacitor C
32Be connected across after the series connection respectively on end (8), the end (9), Cheng Duan (7) joined with PE after its interface joined; Resistance R
11, resistance R
12, resistance R
22, resistance R
21Be connected across after the series connection on end (8), the end (9), interface meets PE in the middle of it, and two tie points (25), (26) meet testing circuit DY in addition
4Reactor L
11, reactor L
12, reactor L
13Be connected on end (1), (4) respectively, end (2), (5) are between end (3), (6).
8. raising wind power generation capacity usage ratio according to claim 6 send transformation device, it is characterized in that: described SPWM control three phase inverter bridge is by switch transistor T
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32, continued flow tube D
11, continued flow tube D
12, continued flow tube D
21, continued flow tube D
22, continued flow tube D
31, continued flow tube D
32, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32, three-phase SPWM generator DY
5, phase-locked isochronous controller DY
6, voltage negative feedback unit DY
7, over-current detection unit DY
8Form; Switch transistor T
11And switch transistor T
12, switch transistor T
21And switch transistor T
22, switch transistor T
31And switch transistor T
32, continued flow tube D
11With continued flow tube D
12, continued flow tube D
21With continued flow tube D
22, continued flow tube D
31With continued flow tube D
32Be connected across on end (8), the end (9) switch transistor T respectively after the series connection
11And switch transistor T
12, continued flow tube D
11With continued flow tube D
12The series connection mid point connect back Cheng Duan (10) and meet reactor L
41, switch transistor T
21And switch transistor T
22, continued flow tube D
21With continued flow tube D
22The series connection mid point connect back Cheng Duan (11) and meet reactor L
42, switch transistor T
31And switch transistor T
32, continued flow tube D
31With continued flow tube D
32The series connection mid point connect back Cheng Duan (12) and meet reactor L
43, driving stage Q
11, driving stage Q
12, driving stage Q
21, driving stage Q
22, driving stage Q
31, driving stage Q
32Output separately be connected on switch transistor T respectively
11, switch transistor T
12, switch transistor T
21, switch transistor T
22, switch transistor T
31, switch transistor T
32Control extremely go up and the input termination three-phase SPWM generator DY of above each driving stage
5Each output of correspondence on, three-phase SPWM generator DY
5The phase-locked isochronous controller DY of each input control termination
6, voltage negative feedback unit DY
7, over-current detection unit DY
8Output, voltage negative feedback unit DY
7Three inputs meet end (10), (11), (12), over-current detection unit DY respectively
8Three inputs meet current transformer S respectively
51, current transformer S
52, current transformer S
53
9. raising wind power generation capacity usage ratio according to claim 6 send transformation device, it is characterized in that: described three groups of LC filters are by reactor L
41, reactor L
42, reactor L
43With capacitor C
41, capacitor C
42, capacitor C
43Form; Reactor L
41With capacitor C
41, reactor L
42With capacitor C
42, reactor L
43With capacitor C
43Series connection respectively, the other end of each reactor connects end (10), (11), (12) respectively, and another termination PE of each capacitor, the mid point after the series connection become end (13), (14), (15) of this device respectively, just three output U, V, W.
10。Raising wind power generation capacity usage ratio according to claim 6 send transformation device, it is characterized in that: described storage battery B
11, storage battery B
12Be two groups of high voltage storage batterys, and voltage equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120550 CN1119850C (en) | 2000-11-06 | 2000-11-06 | Transformer equipment for increasing energy utilization rate of wind-driven electric generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120550 CN1119850C (en) | 2000-11-06 | 2000-11-06 | Transformer equipment for increasing energy utilization rate of wind-driven electric generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1297272A CN1297272A (en) | 2001-05-30 |
| CN1119850C true CN1119850C (en) | 2003-08-27 |
Family
ID=4588235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00120550 Expired - Fee Related CN1119850C (en) | 2000-11-06 | 2000-11-06 | Transformer equipment for increasing energy utilization rate of wind-driven electric generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1119850C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858309A (en) * | 2010-04-27 | 2010-10-13 | 东南大学 | Fixed-pitch direct-driving wind power generator |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235794B (en) * | 2007-12-17 | 2011-07-06 | 黄金伦 | High and low speed wind wheel common pylon |
| CN101447760B (en) * | 2008-10-06 | 2012-10-03 | 河南科技大学 | Voltage controller of wind generating set |
| CN102222930A (en) * | 2010-04-19 | 2011-10-19 | 严本信 | Intelligent and high efficient wind power farm |
| CN102650457A (en) * | 2010-08-28 | 2012-08-29 | 沈群华 | Air conditioner provided with wind power generation device |
| CN102679456A (en) * | 2010-08-28 | 2012-09-19 | 沈群华 | Air conditioner provided with wind power generation apparatus |
| CN102650456A (en) * | 2010-08-28 | 2012-08-29 | 沈群华 | Air conditioner provided with wind power generation device |
| FR2988931B1 (en) * | 2012-03-30 | 2015-10-16 | Schneider Toshiba Inverter | CONTROL DEVICE EMPLOYED IN A POWER SUPPLY SYSTEM WITH CUTTING |
| CN103812124A (en) * | 2012-11-14 | 2014-05-21 | 神华集团有限责任公司 | Test electric power recycling device for power mechanical device and control system thereof |
| CN103532409B (en) * | 2013-10-17 | 2017-02-08 | 天津大学 | Three-phase flyback voltage-multiplying single-switch rectifying circuit for small-scale wind power generation |
| CN106849300A (en) * | 2017-04-18 | 2017-06-13 | 浙江万里学院 | A kind of charger circuit system |
| CN108233683B (en) * | 2018-01-11 | 2020-12-08 | 长沙广义变流技术有限公司 | Single-phase alternating current signal power amplification control system |
| CN108551265B (en) * | 2018-04-23 | 2020-05-22 | 珠海万力达电气自动化有限公司 | Low-voltage power supply for single-phase to three-phase five-wire railway station based on self-coupling clamping zero-structure |
-
2000
- 2000-11-06 CN CN 00120550 patent/CN1119850C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858309A (en) * | 2010-04-27 | 2010-10-13 | 东南大学 | Fixed-pitch direct-driving wind power generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1297272A (en) | 2001-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101980409B (en) | Grid-connected photovoltaic inverter | |
| CN101316074B (en) | Back-to-back three-power level midpoint clamping current transformer of wind power generation system | |
| US9413269B2 (en) | Circuits and methods for photovoltaic inverters | |
| US20100142233A1 (en) | Power conversion device and control method thereof | |
| CN1119850C (en) | Transformer equipment for increasing energy utilization rate of wind-driven electric generation | |
| CN105978376B (en) | Grid-connected inverter circuit and its control method | |
| CN109639160B (en) | Novel unidirectional three-phase three-level rectifier based on soft switching technology | |
| CN103280838A (en) | Wind power generation high-voltage direct current grid-connected system based on open coil structure and control method thereof | |
| CN106451531B (en) | A kind of multiphase electricity generation-unsteady flow integral system and its control method | |
| CN101345423A (en) | 5-power level H-bridge cascade connection back-to-back current transformer used for wind power generation system | |
| TW201338378A (en) | Wind power generation system, and power circuit and converter structure thereof | |
| Vilathgamuwa et al. | Rectifier systems for variable speed wind generation-a review | |
| CN105703689A (en) | High-power brushless doubly-fed machine three-level bidirectional variable-frequency speed regulation system | |
| CN109327158B (en) | Current type grid-connected inverter integrating power decoupling and buck-boost functions | |
| CN102570488B (en) | Power conversion system based on energy storage of lithium battery and control method thereof | |
| CN101599649B (en) | Directly-driven wind power generation system and mode for modulating SPWM inversion control signal in system | |
| CN106452144B (en) | A kind of buck-boost type three-level inverter based on Zeta | |
| CN102545681A (en) | Step wave synthesis three-phase inverter capable of eliminating low frequency harmonic waves and control method | |
| CN101063440A (en) | Solar,wind energy and commercial power combined power supply without transformer device | |
| CN200973023Y (en) | Miniature wind power generation device | |
| Mishra et al. | An efficient and credible grid-interfaced solar PV water pumping system with energy storage | |
| CN102290807B (en) | Small-sized wind power generation controller with wide voltage input range | |
| CN2461194Y (en) | Power transmitting and transforming device for raising wind power generation energy ultilization | |
| CN2481039Y (en) | Electricity converter capable of raising utilization coefficient of wind generated energy | |
| CN110022079A (en) | A kind of design method of T-type three-level current transformer DC bus capacitor capacitance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU INSTITUTE OF ELECTRONICS CO. Free format text: FORMER NAME OR ADDRESS: CHENGDU HOPE ELECTRONIC RESEARCH INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: No. 181, Airport Road, Sichuan, Chengdu Patentee after: Chengdu Hope Electronic Institute Co., Ltd. Address before: No. 181, Airport Road, Sichuan, Chengdu Patentee before: Xiwang Electronic Research Inst. Chengdu City |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030827 Termination date: 20121106 |