CN104953912B - Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter - Google Patents
Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter Download PDFInfo
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Abstract
The present invention relates to a kind of Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter, the armature winding of its each phase-shifting transformer is all connected with ship three phase network, the secondary windings of each phase-shifting transformer is all connected with the signal input part of corresponding matrix converter, the corresponding signal input part of signal output part connection six phase permanent-magnet synchronous motor of each matrix converter, the output shaft connection propeller of six phase permanent-magnet synchronous motor, the status feedback signal sensing interface connected vector control unit of six phase permanent-magnet synchronous motor, the signal input part connected vector control unit of matrix converter, two control signal outputs of vector control unit connect the control signal input of homography converter respectively.The present invention has that power density is high, good reliability, and harmonic content is low, the characteristics of energy energy two-way flow.
Description
Technical field
The present invention relates to marine electric power propulsion technical field, and in particular to a kind of electric ship based on matrix converter
Oceangoing ship frequency conversion speed-adjusting system.
Background technology
The core of modern ships electric propulsion technology is frequency conversion speed-adjusting system.It is applied in watercraft electric propulsion system at present
Converter technique have cycle (Cyclo) frequency converter, current source inverter type (Current Source Inverter, CSI) frequency conversion
Device, voltage source inverter type (Voltage Source Inverter, VSI) frequency converter.Cycle frequency converter is divided to hand over by principle
Stream-AC converter, current source inverter type frequency converter belongs to voltage source inverter type frequency converter and exchanges-AC/DC
Frequency converter.Exchange-AC/DC frequency converter can be divided into 6 impulse commutations by different by rectifier system again, 12 impulse commutations,
The types such as active front end (Active Front End, AFE) rectification.The major defect of cycle frequency converter is that output frequency receives power network
Frequency limit, is generally only capable of being 1/3 or so of mains frequency.Exchange-AC/DC frequency converter major defect is that needs are large-scale
Energy storage module (big inductance or bulky capacitor), and energy is unable to feedback, it usually needs set braking resistor to consume feedback
Energy.
Matrix converter is a kind of new converter technology, belongs to exchange-alternating current type.With achievable input electricity
Stream and output current sineization, do not have some row advantages such as the energy storage link of large volume, energy capable of bidirectional flowing.Successfully should
For electric power battlebus, wind-power electricity generation, the field such as airborne vehicle control.Its good characteristic also has certain values to marine electric power propulsion,
Frequency converter volume can be reduced, the quality of power supply, energy in bidirectional flow is improved.The shortcoming of matrix converter is voltage utilization not high,
The use of the voltage utilization of AV modulator approaches is only 0.5 for three-phase-three-phase matrix converter, uses Double Space Vector Modulation
The voltage utilization of algorithm is 0.866.
Polyphase machine has many advantages compared with three phase electric machine.Because the increase of number of motor phases so that in general power not
In the case of change, each phase power output is reduced, and significantly reduces the grade of power device on each bridge arm；The increasing of the number of phases
Many, the electromagnetic torque pulsation frequency of output is higher, and torque pulsation is just smaller, so as to reduce motor during low cruise
Noise；And polyphase machine is the characteristics of have fault-tolerant ability strong.Above-mentioned advantage causes that polyphase machine is highly suitable for marine vessel power and pushes away
Enter system.
The Chinese invention patent of Patent No. 201210110785.9《Polyphase machine control system is driven based on polyphase machine
System》Propose a kind of matrix converter structure based on 3*3n and drive six-phase motor, the invention directly utilizes three-phase-six phase square
Battle array converter, drives six-phase motor, brings the low defect of voltage utilization, its voltage utilization according to correlation formula, only
0.75。
The Chinese invention patent of Patent No. 201310032954.6《Electric oil energy mix changes the indirect of electric drive ship
Type matrix control system》Propose a kind of method that indirect-type matrix converter is applied to hybrid electrically ship.It is by three-phase
Alternating-current diesel power generator group is connected with the input AC/DC converters of indirect-type matrix converter, three-phase alternating current propulsion motor
It is connected with indirect-type Output matrix end DC/AC, DC terminal can connect batteries.But the invention does not have solving matrix converter yet
The low problem of voltage utilization, and the redundancy of system is low, matrix converter is core, once break down, full ship propulsion electricity
Force system will sink into the situation of paralysis.
The content of the invention
It is an object of the invention to provide a kind of voltage utilization it is high, the two-way flow of energy energy, small volume, power can be realized
The Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter that density is high and redundancy performance is good.
In order to solve the above technical problems, a kind of Electrical Propulsion Ship based on matrix converter that the present invention is provided becomes frequency modulation
Speed system, it includes six phase permanent-magnet synchronous motor, propeller, vector control unit, two phase-shifting transformers and matrix converter,
Wherein, the armature winding of each phase-shifting transformer is all connected with ship three phase network, the secondary windings of each phase-shifting transformer
It is all connected with the signal input part of corresponding matrix converter, the signal output part connection six-phase permanent-magnet synchronization of each matrix converter
The corresponding signal input part of motor, the output shaft connection propeller of six phase permanent-magnet synchronous motor, the six phase permanent-magnet synchronous motor
Status feedback signal sense interface connected vector control unit motor condition feedback induction of signal end, the matrix converter
Signal input part connected vector control unit voltage signal induction end, two control signal outputs of vector control unit point
Not Lian Jie homography converter control signal input.
Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter also includes two clamper modules, described each pincers
One end of position module connects the signal input part of homography converter, and the other end connection homography of each clamper module becomes
The signal output part of parallel operation.
Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter also includes two filtration modules, described each shifting
The secondary windings of phase transformer connects corresponding matrix converter by corresponding filtration module.
The vector control unit includes that rotation speeds setting module, speed regulator, coordinate transformation module, Hysteresis Current compare
Device, tach signal inductor, angular signal inductor, current signal inductor, voltage signal inductor, the inspection of voltage signal phase
Module, two-way switch generation module and comparator are surveyed, wherein, the tach signal inductor, angular signal inductor and electric current
Signal inductor is respectively used to sense the various corresponding states feedback signals of six phase permanent-magnet synchronous motor, the voltage signal sensing
Device is used to sense the signal output part of the input terminal voltage of matrix converter, the rotation speeds setting module and tach signal inductor
Two inputs of comparator are connected respectively, and the output end of comparator connects the signal input part of speed regulator, rotational speed regulation
First signal input part of the signal output part connection coordinate conversion module of device, the reference current signal of coordinate transformation module is set
It is preset value, the secondary signal input of the signal output part connection coordinate conversion module of angular signal inductor, coordinate transform
The signal output part of module connects the first signal input part of Hysteresis Current comparator, the signal output part of current signal inductor
Connect the secondary signal input of Hysteresis Current comparator, the signal output part connection two-way switch of the Hysteresis Current comparator
First signal input part of generation module, the signal output part of the voltage signal inductor passes through voltage signal phase-detection mould
Block connects the secondary signal input of two-way switch generation module, two signal output parts point of the two-way switch generation module
Not Lian Jie homography converter control signal input.
Basic functional principle of the invention is：
The shifted transformer of three-phase electricity obtained from ship three phase network obtains two groups of phases and differs 180 ° the three of electrical angle
Mutually electric, i.e., six is mutually electric, and is input into matrix converter after filtered circuit.The effect of clamp circuit be avoid input excessively stream or
Output end overvoltage.Matrix converter again output control signal to six phase permanent-magnet synchronous motor, the output shaft of motor connects propeller, pushes away
Enter ship advance.
Beneficial effects of the present invention：
The present invention is by using a kind of six phase --- the matrix converter of three-phase topological structure, improve conventional three-phase ---
The low defect of three-phase matrix converter voltage utilization, also maintains that classical matrix inverter power density is high, and harmonic content is low,
The characteristics of energy energy two-way flow.In order that system has good reliability, the combination of six phase permanent-magnet synchronous motor is employed.
In addition in order to reach good control characteristic, such as rapidity, stability employs vector control strategy.
Brief description of the drawings
Fig. 1 is structured flowchart of the invention；
Fig. 2 is the bidirectional switch circuit structure chart of six to three-phase matrix converter in the present invention；
Fig. 3 is the structured flowchart of vector control unit in the present invention；
Fig. 4 is the stagnant ring comparison sheet of A, B, C three-phase current of the invention；
Fig. 5 is voltage signal subregion schematic diagram of the invention；
Fig. 6 is each region voltage signal behavior table of the invention
Fig. 7 is that, when voltage is in region 1, with A, B, C three-phase current Hysteresis control combine the switch schematic diagram for obtaining.
Wherein stain represents switch closure, and white point represents disconnection.
Wherein, 1-phase-shifting transformer, 2-filtration module, 3-clamper module, 4-matrix converter, 5-vector controlled
Unit, 5.1-rotation speeds setting module, 5.2-speed regulator, 5.3-coordinate transformation module, 5.4-Hysteresis Current comparator,
5.5-tach signal inductor, 5.6-angular signal inductor, 5.7-current signal inductor, the sensing of 5.8-voltage signal
Device, 5.9-voltage signal phase detecting module, 5.10-two-way switch generation module, 5.11-comparator, 6-six-phase permanent-magnet
Synchronous motor, 7-propeller, 8-ship three phase network, 5.9.A~5.9.F represent that six is mutually electric, and 5.9.1~5.9.6 represents six
Six regions that be divided into for a cycle (2 π) by phase voltage.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
The Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter as shown in Fig. 1~7, it includes six-phase permanent-magnet
Synchronous motor 6, propeller 7,5, two phase-shifting transformers 1 of vector control unit and matrix converter 4, wherein, described each shifting
The armature winding of phase transformer 1 is all connected with ship three phase network 8, and the secondary windings of each phase-shifting transformer 1 is all connected with corresponding
The signal input part of matrix converter 4, the signal output part connection correspondence of six phase permanent-magnet synchronous motor 6 of each matrix converter 4
Signal input part, six phase permanent-magnet synchronous motor 6 output shaft connection propeller 7, the state of the six phase permanent-magnet synchronous motor 6
The motor condition feedback induction of signal end of feedback signal sensing interface connected vector control unit 5, the letter of the matrix converter 4
The voltage signal induction end of number input connected vector control unit 5,5 two control signal outputs difference of vector control unit
The control signal input of connection homography converter 4.
Above-mentioned phase-shifting transformer 1 is used to for three-phase electricity to switch to matrix converter 4 (six to three-phase matrix converter) demand
The input number of phases.
In above-mentioned technical proposal, it also includes two clamper modules 3, one end connection correspondence of each clamper module 3
The signal input part of matrix converter 4, the signal output part of the other end connection homography converter 4 of each clamper module 3.
In above-mentioned technical proposal, it also includes two filtration modules 2, and the secondary windings of each phase-shifting transformer 1 leads to
Cross corresponding filtration module 2 and connect corresponding matrix converter 4.The function that the filtration module 2 is realized is to filter electric propulsion
The high frequency harmonic components that ship frequency conversion speed-adjusting system is produced due to switch motion.
In above-mentioned technical proposal, the matrix converter 4 is six to three-phase matrix converter.Six to three phase matrix
Converter is mutually input into for six, and the six phases electricity is divided into two groups, differs 180 ° between two groups of phase angles mutually.Six to three phase matrix
Converter is made up of, matrix converter 6*3 two-way switch (two-way switch can realize two-way flow and the two-way blocking-up of electric current)
Voltage utilization can be expressed by following formula：
Wherein VoIt is output voltage, ViIt is input voltage, n is the input number of phases, and m is the output number of phases, and the present invention is in n=6, m=
3, can be calculated, output voltage can reach 1 than input voltage, which improve conventional three-phase to three-phase matrix converter voltage profit
With the low problem of rate.Mutually not short-circuit to meet matrix converter input, the mutually not breaking condition of output, above-mentioned two-way switch need to expire
Foot：
Sja+Sjb+Sjc=1 wherein j ∈ { A, B, C, D, E, F, G }, are input item, and output item is a, b, c, wherein, S is double
To switch, j is input phase, can be A, B, C, D, E, F, G (six), and a, b, c are output phase (three).
Above-mentioned two-way switch is the switching device with two-way admittance with two-way turn-off function, the requirement work of two-way switch
Frequency is high, and switching loss is small, and original paper number is few.The present invention uses the bi-directional switch structure of RB-IGBT parallel connected in reverse phase.Described pincers
Position module 3 is used to provide protection in input excessively stream or the output end overvoltage of matrix converter 4.When Electrical Propulsion Ship frequency conversion
Governing system breaks down and after all two-way switch (matrix converter 4) shut-off, the leakage inductance of mains side and load-side can pass through
The rectifier bridge of clamper module 3 charges to capacitor, can avoid the damage of two-way switch.
In above-mentioned technical proposal, the vector control unit 5 includes rotation speeds setting module 5.1, speed regulator 5.2, sits
Mark conversion module 5.3, Hysteresis Current comparator 5.4, tach signal inductor 5.5, angular signal inductor 5.6, current signal
Inductor 5.7, voltage signal inductor 5.8, voltage signal phase detecting module 5.9, two-way switch generation module 5.10 and ratio
Compared with device 5.11, wherein, the tach signal inductor 5.5, angular signal inductor 5.6 and current signal inductor 5.7 are distinguished
Various corresponding states feedback signals for sensing six phase permanent-magnet synchronous motor 6, the voltage signal inductor 5.8 is used to sense
The signal output part of the input terminal voltage of matrix converter 4, the rotation speeds setting module 5.1 and tach signal inductor 5.5 point
Not Lian Jie comparator 5.11 two inputs, the output end of comparator 5.11 connects the signal input part of speed regulator 5.2,
First signal input part of the signal output part connection coordinate conversion module 5.3 of speed regulator 5.2, coordinate transformation module 5.3
Reference current signal be set to preset value (for 0), the signal output part connection coordinate conversion module of angular signal inductor 5.6
5.3 secondary signal input, the first letter of the signal output part connection Hysteresis Current comparator 5.4 of coordinate transformation module 5.3
Number input, the secondary signal input of the signal output part connection Hysteresis Current comparator 5.4 of current signal inductor 5.7,
First signal input part of the signal output part connection two-way switch generation module 5.10 of the Hysteresis Current comparator 5.4, institute
The signal output part for stating voltage signal inductor 5.8 connects two-way switch generation mould by voltage signal phase detecting module 5.9
The secondary signal input of block 5.10, two signal output parts of the two-way switch generation module 5.10 connect correspondence square respectively
The control signal input of battle array converter 4.The vector control unit 5 can realize the vector controlled of six phase permanent-magnet synchronous motor,
And the two-way switch modulation of six to three-phase matrix converter.The measurement of current signal inductor 5.7 is six-phase permanent-magnet
Stator terminal the electric current ia, ib, ic, id, ie, if of synchronous motor 6.The measurement of voltage signal inductor 5.8 is six to three
Phase matrix converter input terminal voltage uA, uB, uC, uD, uE and uF.The tach signal inductor 5.5 is used to measure six mutually forever
The rotating speed of the rotor of magnetic-synchro motor 6.The angular signal inductor 5.6 is used to measure the rotor of six phase permanent-magnet synchronous motor 6 and determine
The angle of sub- A phase windings axis.The speed regulator 5.2 is used for actual speed and setting speed by PI
(proportional integral controller, proportion adjustment and integral adjustment) reconcile generation reference q axles (iq1,
Iq2 axles) (q axles are the quadrature axis in motor, vertical between two adjacent poles in the synchronous motor on the center line of rotor magnetic pole
That is exactly quadrature axis direction on bisector) electric current.To realize vector controlled, d axles (id1 and id2 axles) (d axles are the d-axis in motor,
It is exactly d-axis direction in the synchronous motor on the center line of rotor magnetic pole) reference current is set to 0 (i.e. coordinate transformation module 5.3
Reference current signal be set to 0).After d axles and q axles reference current are carried out into coordinate transform processing through coordinate transformation module 5.3
Obtain six phase reference current ia*, ib*, ic*, id*, ie* and if*.
The coordinate formula of coordinate transformation module 5.3 is：
id1、iq1、id2、iq2Be component of the electric current on d-q axles, here be six-phase motor, be considered as two three
Mutually thus have 1,2 point, i01、i02It is artificially to be chosen in order to coordinate transform is convenient (because to meet Matrix Multiplication regulation
Then)；
It is the d axles of d-q coordinates (rotating coordinate system) system and the angle of a-b coordinate systems (rest frame) a axles that θ angles are.
Above-mentioned Hysteresis Current comparator 5.4 will compare through the reference current of changes in coordinates with actual current, set stagnant ring width
Degree, if comparative result is in stagnant ring, maintains original current signal constant, if comparative result is outside stagnant ring, from current control
Table, as shown in figure 4, middle selection controlling value.Current control table is as shown in figure 4, the stagnant ring comparison sheet of A, B and C three-phase current, D, E and F
The stagnant ring comparison sheet of the three-phase current principle same with its.Wherein I is Hysteresis Current width.When comparative result is in ring, then tie up
The current controling signal for holding principle is constant.When comparative result is outside ring, actual current then makes stagnant ring ratio more than given electric current
It is 0 compared with device H, controlling switch state reduces electric current, when actual current is less than given electric current, then it is 1, controlling switch shape to make H
State, increases electric current.Out of phase voltage is connected on when the increase and reduction of control electric current by matrix converter to realize.As excellent
Choosing, the hysteresis band of Hysteresis Current comparator 5.4 is set to 0.1A.
The voltage signal phase detecting module 5.9 is used for the region where detecting current control moment voltage.Six is mutually electric
Pressure handle a cycle (2 π) is averagely divided into six regions (each region accounts for π/3 electrical angle).There is a maximum in each region
Voltage and minimum voltage.Six phase electricity are made up of 5.9.A, 5.9.B, 5.9.C, 5.9.D, 5.9.E and 5.9.F, (Fig. 5 as shown in Figure 5
In, X-axis is that time shaft, Y-axis are the amplitudes of voltage).Wherein the mutual phase difference of 5.9.A, 5.9.B and 5.9.C is 120 ° of electrical angles,
5.9.A, 5.9.B, 5.9.C 180 ° of electrical angles of shifted transformer phase shift obtain 5.9.D, 5.9.E, 5.9.F.This six-phase voltage will
A cycle (2 π) is equally divided into six regions, 5.9.1,5.9.2,5.9.3,5.9.4,5.9.5 and 5.9.6.Select each area
The maximum voltage selected as matrix converter 4 with two minimum voltages in domain.Fig. 6 is each region voltage signal behavior table,
Region 5.9.1~5.9.6 in the difference corresponding diagram 5 of state 1~6, selection voltage phase u_A, u_B, u_C, u_D, u_E, u_F (A B
C is common three-phase electricity (0 ° of A initial phases, 120 ° of B-phase, 240 ° of C phases), and D E F differ 180 ° of electrical angle (D with ABC respectively
180 ° of phase, 300 ° of E phases, 420 ° of F phases (- 60 °)) respectively in corresponding diagram 5 six mutually electricity 5.9.A, 5.9.B, 5.9.C,
5.9.D、5.9.E、5.9.F。
The input of the two-way switch generation module 5.10 is Hysteresis Current signal value and voltage signal phase value, two-way opened
The output signal for closing generation module 5.10 controls the two-way switch of matrix converter 4.Be may know that according to current hysteresis-band control signal
The difference of current flow and demand current is needed, if less than actual current, then high voltage should be applied, if greater than actual electricity
Stream, then because applying small voltage.Described big voltage judges with small voltage according to voltage signal phase detecting module 5.9.
In above-mentioned technical proposal, the six phase permanent-magnet synchronous motor 6 is the synchronous electricity of the double three-phase permanent-magnetic of 30 ° of electrical angles of phase shift
Machine.
In above-mentioned technical proposal, the phase difference of the three-phase electricity of the secondary windings output of described two phase-shifting transformers 1
180 ° of electrical angles.The motor is a kind of asymmetric six-phase motor, and ten symmetrical two-phases are equivalent to according to the correlation theory at facies tract angle
Motor, with more numbers of phases, has bigger advantage than common six-phase motor (symmetrical three phase electric machine).
Fig. 7 is that, when voltage is in the 5.9.1 of region, with A, B, C three-phase current Hysteresis control combine the switch for obtaining and shows
It is intended to, it will be appreciated from fig. 6 that when voltage is in region 5.9.1, voltage selection is u_E and u_B.In Fig. 7, " ordinate " is three-phase
Output end, " abscissa " is six phase inputs.
Referring also to Fig. 4, when H_a, H_b, H_c are respectively 0,0,0, represents that three-phase electricity needs to reduce switching current,
Then three-phase output selects u_B, in can obtaining Fig. 7, the switch list shown in 7.1.
When H_a, H_b, H_c are respectively 0,0,1, represent that A, B two-phase need to reduce, C phases need increase, then three-phase output
U_E, u_E and u_B are selected respectively, in can obtaining Fig. 7, the switch list shown in 7.2.
When H_a, H_b, H_c are respectively 0,1,0, A is represented, C two-phases need to reduce, and B phases need increase, then three-phase output
U_E, u_B and u_E are selected respectively, in can obtaining Fig. 7, the switch list shown in 7.3.
When H_a, H_b, H_c are respectively 0,1,1, B is represented, C two-phases need increase, and A phases need to reduce, then three-phase output
U_B, u_E, u_E are selected respectively, in can obtaining Fig. 7, the switch list shown in 7.4.
When H_a, H_b, H_c are respectively 1,0,0, B is represented, C two-phases need to reduce, and A phases need increase, then three-phase output
U_E, u_B, u_B are selected respectively, in can obtaining Fig. 7, the switch list shown in 7.5.
When H_a, H_b, H_c are respectively 1,0,1, A is represented, C two-phases need increase, and B phases need to reduce, then three-phase output
U_E, u_B, u_E are selected respectively, in can obtaining Fig. 7, the switch list shown in 7.6.
When H_a, H_b, H_c are respectively 1,1,0, represent that A, B two-phase need increase, C phases need to reduce, then three-phase output
During selection u_E, u_E, u_B can obtain Fig. 7 respectively, the switch list shown in 7.5.
When H_a, H_b, H_c are 1,1,1, represent that three-phase electricity needs to increase switching current, then three-phase output is selected
U_E, in can obtaining Fig. 7, the switch list shown in 7.1.
When voltage is in other regions, can be obtained by above rule with the region corresponding to D, E and F phase.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (7)
1. a kind of Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter, it include six phase permanent-magnet synchronous motor (6),
Propeller (7), vector control unit (5), two phase-shifting transformers (1) and matrix converter (4), it is characterised in that：Each is moved
The armature winding of phase transformer (1) is all connected with ship three phase network (8), and the secondary windings of each phase-shifting transformer (1) is all connected with
The signal input part of corresponding matrix converter (4), the signal output part connection six-phase permanent-magnet synchronization of each matrix converter (4)
The corresponding signal input part of motor (6), the output shaft of six phase permanent-magnet synchronous motor (6) connects propeller (7), six-phase permanent-magnet synchronization
The motor condition feedback induction of signal end of status feedback signal sensing interface connected vector control unit (5) of motor (6), matrix
The signal input part of converter (4) is also connected with the voltage signal induction end of vector control unit (5), vector control unit (5) two
Individual control signal output connects the control signal input of homography converter (4) respectively；
The vector control unit (5) includes rotation speeds setting module (5.1), speed regulator (5.2), coordinate transformation module
(5.3), Hysteresis Current comparator (5.4), tach signal inductor (5.5), angular signal inductor (5.6), current signal sense
Answer device (5.7), voltage signal inductor (5.8), voltage signal phase detecting module (5.9), two-way switch generation module
(5.10) and comparator (5.11), wherein, the tach signal inductor (5.5), angular signal inductor (5.6) and electric current letter
Number inductor (5.7) is respectively used to sense the various corresponding states feedback signals of six phase permanent-magnet synchronous motor (6), the voltage letter
, for sensing the input terminal voltage of matrix converter (4), the rotation speeds setting module (5.1) and rotating speed are believed for number inductor (5.8)
The signal output part of number inductor (5.5) connects two inputs of comparator (5.11), the output of comparator (5.11) respectively
The signal input part at end connection speed regulator (5.2), the signal output part connection coordinate conversion module of speed regulator (5.2)
(5.3) the first signal input part, the reference current signal of coordinate transformation module (5.3) is set to preset value, angular signal sense
Answer the secondary signal input of signal output part connection coordinate conversion module (5.3) of device (5.6), coordinate transformation module (5.3)
Signal output part connection Hysteresis Current comparator (5.4) the first signal input part, the signal of current signal inductor (5.7)
The secondary signal input of output end connection Hysteresis Current comparator (5.4), the signal of the Hysteresis Current comparator (5.4) is defeated
Go out first signal input part at end connection two-way switch generation module (5.10), the signal of the voltage signal inductor (5.8)
Output end is input into by the secondary signal that voltage signal phase detecting module (5.9) connects two-way switch generation module (5.10)
End, two signal output parts of the two-way switch generation module (5.10) connect the control of homography converter (4) respectively
Signal input part.
2. the Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter according to claim 1, it is characterised in that：
It also includes two clamper modules (3), the signal input of one end connection homography converter (4) of each clamper module (3)
End, the signal output part of other end connection homography converter (4) of each clamper module (3).
3. the Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter according to claim 1, it is characterised in that：
It also includes two filtration modules (2), and the secondary windings of each phase-shifting transformer (1) is connected by corresponding filtration module (2)
Corresponding matrix converter (4).
4. the Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter according to claim 1, it is characterised in that：
The matrix converter (4) is six to three-phase matrix converter.
5. the Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter according to claim 1, it is characterised in that：
The hysteresis band of the Hysteresis Current comparator (5.4) is 0.1A.
6. the Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter according to claim 1, it is characterised in that：
The six phase permanent-magnet synchronous motor (6) is the double three-phase permanent-magnetic synchronous motor of 30 ° of electrical angles of phase shift.
7. the Electrical Propulsion Ship frequency conversion speed-adjusting system based on matrix converter according to claim 1, it is characterised in that：
The phase of the three-phase electricity of the secondary windings output of described two phase-shifting transformers (1) differs 180 ° of electrical angles.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Publication date |
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| CN104953912A (en) | 2015-09-30 |
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