CN207128646U - Charging electric vehicle and driving integrated converter based on H bridges and high frequency transformer - Google Patents
Charging electric vehicle and driving integrated converter based on H bridges and high frequency transformer Download PDFInfo
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- CN207128646U CN207128646U CN201720753744.XU CN201720753744U CN207128646U CN 207128646 U CN207128646 U CN 207128646U CN 201720753744 U CN201720753744 U CN 201720753744U CN 207128646 U CN207128646 U CN 207128646U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses a kind of charging electric vehicle based on H bridges and high frequency transformer and driving integrated converter, the integrated morphology is provided with 15 switches on the basis of charging topology, switched on-off by this 15, realize two kinds of circuit structures of charging and driving, magnetic combined transformer in recharging converter has been reconstructed into the step-up transformer in motor driving transducer by primary side winding in parallel, and recharging converter and driving transducer have shared 3 H bridges.Compared with prior art, boost network does not need additional power tube in the integrated motor driving topology of the utility model, but employs a H bridge in charging topology, in addition, by adding an electric capacity, along with topological device of charging itself can be reconstructed into boost network.Motor driven systems have fault-tolerant and single-stage boost capability, and its faults-tolerant control is constant, i.e., need not change control software, and fault-tolerant rear motor remains to quota operation.
Description
Technical field
The present invention relates to charging electric vehicle and driving converters field, more particularly to it is a kind of based on H bridges and
The charging electric vehicle of high frequency transformer integrates with driving transducer.
Background technology
Because Vehicular charger is installed on electric automobile, so, volume, the weight of electric automobile are not only increased,
It also add the cost of whole electric automobile.In order to solve this problem, integrated technology is introduced.At present, according to integrated
Whether charger has electrical isolation, is divided into two classes：There are isolating transformer and the charger without isolating transformer.Without isolation transformation
The integrated topological scheme of device mainly includes two kinds：The first, as shown in figure 1, charging topological sum motor drives topological power common
Electronic converter, which is realized, to be integrated, and this structure is shown in United States Patent (USP) US8441229 (B2), i.e. rectifier and three staggered DC/DC
Converter.This structure needs to increase extra inductor, and volume is big, and cost is high, and control is complicated, without electrical isolation, fits
Electric automobile for middle low power.Second, integrated topological is as shown in Fig. 2 the coil windings by the use of motor are opened up as charging
The boost inductance flutterred, it is poor without electrical isolation, reliability.The Integrated Solution for having isolating transformer has two kinds：The first, such as
Shown in Fig. 3, static transformator is formed using special machines structure, is Industrial Frequency Transformer, loss is larger；Second, such as Fig. 4 institutes
Show, be the Integrated Solution (patent authorization number CN104670040B) that this seminar proposes, charging topology utilizes magnetic combination high frequency
The electrical isolation of transformer improves security of system, and integrated source of resistance driving topology utilizes three primary side windings magnetic group in parallel
Close high frequency transformer and substantially increase boost capability, wherein, impedance source network needs additional controlled power pipe, realizes that energy is double
To flowing.Though integrated driving topology has fault tolerance, motor is in the operation of drop volume.In addition, also there is nothing in the program
The problem of source device is more, drive circuit oneself power consumption is big.
The content of the invention
Present invention aims at study a kind of charging electric vehicle based on H bridges and high frequency transformer and driving integrated transformation
Device, the integrated converter reduces oneself power consumption by additional less device, and integrated driving transducer is in fault-tolerant fortune
During row, motor remains to quota operation, is run in being that of avoiding motor drop volume.
To achieve the above object, a kind of charging electric vehicle based on H bridges and high frequency transformer of the invention converts with driving
Device integrates, including the first to the 3rd rectifier, the first to the 3rd H bridges high-frequency inverter, the first to the second electric capacity, magnetic combination high frequency
Transformer, uncontrollable rectifier bridge and the first to the 15th switching switch, the second electric capacity both ends connect the positive pole of battery and born respectively
Pole；
The b ends of first rectifier first output termination the first switching switch, the b of second output termination the second switching switch
End；
The b ends of the switching switch of second rectifier first output termination the 3rd, the b of the switching switch of the second output termination the 4th
End；
One end of the switching switch of 3rd rectifier first output termination the 5th, the second output the 3rd H bridge high-frequency inversions of termination
Second input of device；
The a of first switching switch terminates the first input end of the first H bridge high-frequency inverters, a terminations of the second switching switch
Second input of the first H bridge high-frequency inverters, a of the 3rd switching switch terminate the first input of the 2nd H bridge high-frequency inverters
End, a of the 4th switching switch terminate the second input of the 2nd H bridge high-frequency inverters, another termination the of the 5th switching switch
The first input end of three H bridge high-frequency inverters；
The b ends of the switching switch of the first output termination the 6th of first H bridge high-frequency inverters, the first H bridge high-frequency inverters
The b ends of the switching switch of second output termination the 7th, the b of the switching switch of the first output termination the 8th of the 2nd H bridge high-frequency inverters
End, the b ends of the switching switch of the second output termination the 9th of the 2nd H bridge high-frequency inverters, the first of the 3rd H bridge high-frequency inverters are defeated
Go out the b ends of the switching switch of termination the tenth, the b ends of the switching switch of the second output termination the 11st of the 3rd H bridge high-frequency inverters；
The first end of a termination primary side windings of high frequency transformer first of 6th switching switch, a terminations of the 7th switching switch
Second end of the primary side winding of high frequency transformer first, the of a termination primary side windings of high frequency transformer second of the 8th switching switch
One end, the second end of a termination primary side windings of high frequency transformer second of the 9th switching switch, a terminations of the tenth switching switch are high
The first end of the primary side winding of frequency power transformer the 3rd, the of a termination primary side windings of high frequency transformer the 3rd of the 11st switching switch
Two ends；
The first via of the switching switch of the first termination the 13rd of high frequency transformer vice-side winding, high frequency transformer vice-side winding
Second termination the 13rd switching switch the second tunnel；
The first input end of another termination uncontrollable rectifier bridge of the first via of 13rd switching switch, the other end on the second tunnel
Connect the second input of uncontrollable rectifier bridge；
The b ends of the switching switch of the first output termination the 12nd of uncontrollable rectifier bridge, the second output termination battery terminal negative；
The a termination battery positive voltage of 12nd switching switch；
The c of 12nd switching switch terminates the second input of the 3rd H bridge high-frequency inverters；
The c ends of 12nd switching switch connect the first end of high frequency transformer vice-side winding by the first electric capacity；
Second end of high frequency transformer vice-side winding connects the first switching switch, the c ends of the 3rd switching switch respectively；
Battery terminal negative connects the second switching switch, the c ends of the 4th switching switch respectively；
First the first output end of H bridges high-frequency inverter switchs the first via by the 14th switching and connects three phase electric machine a phase stators
Winding terminal, the second output end switch the second tunnel by the 14th switching and connect three phase electric machine b phase stator winding leading-out terminals；Second
The first output end of H bridges high-frequency inverter switchs the 3rd tunnel by the 14th switching and connects three phase electric machine c phase stator winding leading-out terminals；
2nd the second output end of H bridges high-frequency inverter connects three stators of three phase electric machine by the 15th switching switch respectively
The leading-out terminal of winding；
When charging electric vehicle is in charge mode with driving integrated topological, the described first to fourth, the 6th to the tenth
The a ends of two switching switches are connected with b ends, the five, the 13rd switching switch closures；
When charging electric vehicle with driving integrated topological be in drive pattern when, i.e., motor driven systems normal operation when,
The a ends of described first to fourth, the 6th to the 12nd switching switch are connected with c ends, and the five, the 13rd switchings switch off, the
All closure, the 15th switching switch are all off for 14 switching switches；When drive pattern is in fault-tolerant operation, corresponding failure
15th switching switch closure of phase, the 14th switching switch off.
When electric automobile is in driving condition, electrokinetic cell improves DC bus-bar voltage, Ran Houjing by boost network
Cross two H bridge inverters and be converted to three-phase alternating current supply three phase electric machine, motor operating；Wherein boost network includes one
The high frequency transformer of H bridges, the 3rd electric capacity and integrated form；
When electric automobile is in charged state, the three-phase alternating current of power network offer, by three uncontrollable rectifier bridges, direct currents
Bus filter capacitor（Thin-film capacitor）, three H bridges high-frequency inverters, the bridge rectifier electricity of magnetic combination high frequency transformer and output
Road and filter capacitor, which are converted to direct current and are powered battery, to be charged.In addition, charging topology itself has power factor school
Orthofunction.
The ingenious part of the present invention is, effect is switched on-off by first to 15, and it drives topological almost all profit
With the topological device of original charging, compared with prior art, integrated driving topology has following technique effect：
1. motor driven systems have fault-tolerant and single-stage boost capability, its faults-tolerant control is constant, i.e., need not change control
Software.
2. need to increase an electric capacity, along with the original device of charging topology can be reconstructed into boost network.
3. driving boost network in converter main circuit not need additional power tube, but employ charging topology
In a H bridge, reduce hardware cost, decrease the power attenuation of charging circuit itself.
4. during drive system fault-tolerant operation, motor remains to run in the nominal case.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the charging electric vehicle and driving Integrated Solution one of existing no isolating transformer；
Fig. 2 is the circuit theory diagrams of the charging electric vehicle and driving Integrated Solution two of existing no isolating transformer；
Fig. 3 is the circuit theory diagrams of the existing charging electric vehicle containing isolating transformer and driving Integrated Solution one；
Fig. 4 is the circuit theory diagrams of the existing charging electric vehicle containing isolating transformer and driving Integrated Solution two；
Fig. 5 is the charging electric vehicle proposed by the present invention containing isolating transformer and driving integrated topological structure；
Fig. 6 is the schematic diagram of present invention charging topology；
Fig. 7 is the schematic diagram of motor driving topology of the present invention；
Fig. 8 is the topological A phases input voltage and input current simulation waveform of present invention charging；
Fig. 9 is the topological A phases DC bus-bar voltage simulation waveform of present invention charging；
Figure 10 is the topological load output voltage simulation waveform of present invention charging；
Figure 11 is that the present invention drives topological DC bus-bar voltage analogous diagram；
Figure 12 is that the present invention drives topological DC bus-bar voltage expanded view；
Figure 13 is that the present invention drives topological three-phase phase voltage analogous diagram；
Figure 14 is that the present invention drives topological threephase stator electric current, rotor angular frequency, torque analogous diagram.
Embodiment
Below in conjunction with the accompanying drawings to the further detailed description of the present invention：
As shown in figure 5, a kind of charging electric vehicle based on H bridges and high frequency transformer integrates with driving transducer, including
First to the 3rd rectifier, the first to the 3rd H bridges high-frequency inverter, the first to the second electric capacity, magnetic combine high frequency transformer, not controlled
Rectifier bridge and the first to the 15th switching switch；Second electric capacity both ends connect the positive pole and negative pole of battery respectively；
The b ends of first rectifier first output termination the first switching switch, the b of second output termination the second switching switch
End；
The b ends of the switching switch of second rectifier first output termination the 3rd, the b of the switching switch of the second output termination the 4th
End；
One end of the switching switch of 3rd rectifier first output termination the 5th, the second output the 3rd H bridge high-frequency inversions of termination
Second input of device；
The a of first switching switch terminates the first input end of the first H bridge high-frequency inverters, a terminations of the second switching switch
Second input of the first H bridge high-frequency inverters, a of the 3rd switching switch terminate the first input of the 2nd H bridge high-frequency inverters
End, a of the 4th switching switch terminate the second input of the 2nd H bridge high-frequency inverters, another termination the of the 5th switching switch
The first input end of three H bridge high-frequency inverters；
The b ends of the switching switch of the first output termination the 6th of first H bridge high-frequency inverters, the first H bridge high-frequency inverters
The b ends of the switching switch of second output termination the 7th, the b of the switching switch of the first output termination the 8th of the 2nd H bridge high-frequency inverters
End, the b ends of the switching switch of the second output termination the 9th of the 2nd H bridge high-frequency inverters, the first of the 3rd H bridge high-frequency inverters are defeated
Go out the b ends of the switching switch of termination the tenth, the b ends of the switching switch of the second output termination the 11st of the 3rd H bridge high-frequency inverters；
The first end of a termination primary side windings of high frequency transformer first of 6th switching switch, a terminations of the 7th switching switch
Second end of the primary side winding of high frequency transformer first, the of a termination primary side windings of high frequency transformer second of the 8th switching switch
One end, the second end of a termination primary side windings of high frequency transformer second of the 9th switching switch, a terminations of the tenth switching switch are high
The first end of the primary side winding of frequency power transformer the 3rd, the of a termination primary side windings of high frequency transformer the 3rd of the 11st switching switch
Two ends；
The first via of the switching switch of the first termination the 13rd of high frequency transformer vice-side winding, high frequency transformer vice-side winding
Second termination the 13rd switching switch the second tunnel；
The first input end of another termination uncontrollable rectifier bridge of the first via of 13rd switching switch, the other end on the second tunnel
Connect the second input of uncontrollable rectifier bridge；
The b ends of the switching switch of the first output termination the 12nd of uncontrollable rectifier bridge, the second output termination battery terminal negative；
The a termination battery positive voltage of 12nd switching switch.
Above section is charging circuit configuration, and for its topology as shown in fig. 6, using lower part as driving circuit structure, it is topological
As shown in Figure 7：
The c of 12nd switching switch terminates the second input of the 3rd H bridge high-frequency inverters；
The c ends of 12nd switching switch connect the first end of high frequency transformer vice-side winding by the first electric capacity；
Second end of high frequency transformer vice-side winding connects the first switching switch, the c ends of the 3rd switching switch respectively；
Battery terminal negative connects the second switching switch, the c ends of the 4th switching switch respectively；
First the first output end of H bridges high-frequency inverter switchs the first via by the 14th switching and connects three phase electric machine a phase stators
Winding terminal, the second output end switch the second tunnel by the 14th switching and connect three phase electric machine b phase stator winding leading-out terminals；Second
The first output end of H bridges high-frequency inverter switchs the 3rd tunnel by the 14th switching and connects three phase electric machine c phase stator winding leading-out terminals；
2nd the second output end of H bridges high-frequency inverter connects three stators of three phase electric machine by the 15th switching switch respectively
The leading-out terminal of winding；
When charging electric vehicle is in charge mode with driving integrated topological, the described first to fourth, the 6th to the tenth
The a ends of two switching switches are connected with b ends, the five, the 13rd switching switch closures；Then, digital processing unit sends the driving of PWM ripples
Signal supplies 3 H bridge inverters.
When charging electric vehicle is in drive pattern normal operation with driving integrated topological, described first to fourth, the
The a ends of six to the 12nd switching switches are connected with c ends, and the five, the 13rd switchings switch off, and the 14th switching switch all closes
Close, the 15th switching switch is all off；When drive pattern is in fault-tolerant operation, the 15th switching switch of corresponding failure phase
Closure, the 14th switching switch off.Then, digital processing unit sends the work(that PWM ripples drive signal supplies 3 H bridge inverters
Rate pipe.
First, second and third H bridges high-frequency inverter is phase-shifting transformer or controlled resonant converter, realizes Sofe Switch, reduces switch damage
Consumption.
Simulating, verifying is done for the integrated topological structure, its simulation parameter is as follows：Load resistance is 5 in charging system
Ω, output filter capacitor 2mF, output voltage 180V, switching frequency 12kHz, input filter inductance are 0.5mH, input filter
Ripple electric capacity is 0.002mF, the high frequency transformer turn ratio 48:22.Induction motor model parameter is：Rated power is 1.5kW, specified line
Voltage is 380V, rated frequency 50Hz, rated speed 1451rpm, and stator resistance is 2.375 Ω, and stator leakage inductance is
0.1982H, rotor resistance are 1.741 Ω, rotor leakage inductance 0.1889H, magnetizing inductance 0.1814H, and rotary inertia is
0.0109, number of pole-pairs 2.The input voltage of single-stage boost inverter is 240V, and SYSVPWM modulation methods are segmented using pass-through state
Method, DC bus-bar voltage are increased to 600V.Charging system employs DC voltage outer shroud, the modulation strategy of current inner loop, and electric
Machine drive system carries out preliminary simulating, verifying using the indirect vector control strategy in rotor field.
For charging system simulation waveform as shown in Fig. 8 to Figure 10, Fig. 8 is the simulation waveform of line voltage and electric current, can
To find out that the sine degree of current on line side is very high, power factor is more than 0.99；Fig. 9 is DC bus-bar voltage waveform, and its waveform is
One steamed bun ripple, this is due to the result that DC side has used the thin-film capacitor of several microfarads to be filtered, it can be deduced that three single-phase work(
Rate all sinusoidally changes；Figure 10 is load voltage waveform, is pressed three road mutual deviations for 120 ° by magnetic combined transformer
The power of constant amplitude is superposed to according to the power of sinusoidal rule change, then stable load voltage is exported by rectifying and wave-filtering.
Whole motor driven systems are emulated, simulation waveform is as shown in Figure 11 to 14.Figure 11 is dc bus electricity
Corrugating.Figure 12 be Figure 11 expanded view, it can be seen that DC bus-bar voltage waveform is series of rectangular wave component, this be by
The result of pass-through state be present in boosting inverter.It can be seen that DC voltage boosts to 600V by 250V from Figure 11 and Figure 12
Supply inverter.Figure 13 is motor terminal voltage analogous diagram.Figure 14 is threephase stator electric current, rotor angular frequency and torque emulation
Figure.The empty load of motor as 0-0.5s, i.e. load torque are 0, the motor belt motor nominal load as 0.5-0.8s.From above charging system
It is feasible for can be seen that the integrated morphology with motor-driven simulation waveform.
Claims (2)
1. a kind of charging electric vehicle based on H bridges and high frequency transformer and driving integrated converter, including first to the 3rd is whole
Flow device, the first to the 3rd H bridges high-frequency inverter, the first to the second electric capacity, magnetic combination high frequency transformer and output stage uncontrollable rectifier
Bridge, the second electric capacity both ends connect the positive pole and negative pole of battery respectively；Opened characterized in that, also including the first to the 15th switching
Close；
The b ends of first rectifier first output termination the first switching switch, the b ends of second output termination the second switching switch；
The b ends of the switching switch of second rectifier first output termination the 3rd, the b ends of the switching switch of the second output termination the 4th；
One end of the switching switch of 3rd rectifier first output termination the 5th, the second output the 3rd H bridge high-frequency inverters of termination
Second input；
The a of first switching switch terminates the first input end of the first H bridge high-frequency inverters, and a of the second switching switch terminates the first H
Second input of bridge high-frequency inverter, a of the 3rd switching switch terminate the first input end of the 2nd H bridge high-frequency inverters, the
The a of four switching switches terminates the second input of the 2nd H bridge high-frequency inverters, the H bridges of another termination the 3rd of the 5th switching switch
The first input end of high-frequency inverter；
The b ends of the switching switch of the first output termination the 6th of first H bridge high-frequency inverters, the second of the first H bridge high-frequency inverters
The b ends of the switching switch of output termination the 7th, the b ends of the switching switch of the first output termination the 8th of the 2nd H bridge high-frequency inverters, the
The b ends of the switching switch of the second output termination the 9th of two H bridge high-frequency inverters, the first output end of the 3rd H bridge high-frequency inverters
Connect the b ends of the tenth switching switch, the b ends of the switching switch of the second output termination the 11st of the 3rd H bridge high-frequency inverters；
The first end of a termination primary side windings of high frequency transformer first of 6th switching switch, a termination high frequencies of the 7th switching switch
Second end of the primary side winding of transformer first, the first end of a termination primary side windings of high frequency transformer second of the 8th switching switch,
Second end of a termination primary side windings of high frequency transformer second of the 9th switching switch, a termination high frequency transformations of the tenth switching switch
The first end of the primary side winding of device the 3rd, the second end of a termination primary side windings of high frequency transformer the 3rd of the 11st switching switch；
The first via of the switching switch of the first termination the 13rd of high frequency transformer vice-side winding, the of high frequency transformer vice-side winding
Second tunnel of the switching switch of two termination the 13rd；
The first input end of another termination uncontrollable rectifier bridge of the first via of 13rd switching switch, another termination on the second tunnel is not
Control the second input of rectifier bridge；
The b ends of the switching switch of the first output termination the 12nd of uncontrollable rectifier bridge, the second output termination battery terminal negative；
The a termination battery positive voltage of 12nd switching switch；
The c of 12nd switching switch terminates the second input of the 3rd H bridge high-frequency inverters；
The c ends of 12nd switching switch connect the first end of high frequency transformer vice-side winding by the first electric capacity；
Second end of high frequency transformer vice-side winding connects the first switching switch, the c ends of the 3rd switching switch respectively；
Battery terminal negative connects the second switching switch, the c ends of the 4th switching switch respectively；
First the first output end of H bridges high-frequency inverter switchs the first via by the 14th switching and connects three phase electric machine a phase stator winding
Leading-out terminal, the second output end switch the second tunnel by the 14th switching and connect three phase electric machine b phase stator winding leading-out terminals；2nd H bridges
The output end of high-frequency inverter first switchs the 3rd tunnel by the 14th switching and connects three phase electric machine c phase stator winding leading-out terminals；
2nd the second output end of H bridges high-frequency inverter connects three stator winding of three phase electric machine by the 15th switching switch respectively
Leading-out terminal；
When charging electric vehicle is in charge mode with driving integrated topological, the described first to fourth, the 6th to the 12nd cuts
The a ends for changing switch are connected with b ends, the five, the 13rd switching switch closures；
When charging electric vehicle is in drive pattern with driving integrated topological, the described first to fourth, the 6th to the 12nd cuts
The a ends for changing switch are connected with c ends, and the five, the 13rd switchings switch off, and the 14th switching switch all closes, and the 15th cuts
It is all off to change switch；When drive pattern is in fault-tolerant operation, the 15th switching switch closure of corresponding failure phase, the 14th
Switching switches off.
2. the charging electric vehicle according to claim 1 based on H bridges and high frequency transformer and driving integrated converter, its
It is characterised by, the first, second and third H bridges high-frequency inverter is phase-shifting transformer or controlled resonant converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720753744.XU CN207128646U (en) | 2017-06-26 | 2017-06-26 | Charging electric vehicle and driving integrated converter based on H bridges and high frequency transformer |
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| CN201720753744.XU CN207128646U (en) | 2017-06-26 | 2017-06-26 | Charging electric vehicle and driving integrated converter based on H bridges and high frequency transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107244255A (en) * | 2017-06-26 | 2017-10-13 | 江苏师范大学 | Charging electric vehicle and driving integrated converter based on H bridges and high frequency transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107244255A (en) * | 2017-06-26 | 2017-10-13 | 江苏师范大学 | Charging electric vehicle and driving integrated converter based on H bridges and high frequency transformer |
| CN107244255B (en) * | 2017-06-26 | 2024-01-05 | 江苏师范大学 | H-bridge and high-frequency transformer-based electric automobile charging and driving integrated converter |
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Granted publication date: 20180323 Termination date: 20200626 |