CN102358208A - Electric driving system for electric vehicle and control method of electric driving system - Google Patents
Electric driving system for electric vehicle and control method of electric driving system Download PDFInfo
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- CN102358208A CN102358208A CN2011102372734A CN201110237273A CN102358208A CN 102358208 A CN102358208 A CN 102358208A CN 2011102372734 A CN2011102372734 A CN 2011102372734A CN 201110237273 A CN201110237273 A CN 201110237273A CN 102358208 A CN102358208 A CN 102358208A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 108
- 230000005284 excitation Effects 0.000 claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000004146 energy storage Methods 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005347 demagnetization Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention discloses an electric driving system for an electric vehicle and a control method of the electric driving system. The electric driving system comprises two sets of control circuits, two groups of battery packs, a direct-current excitation power supply and a stator permanent magnetic multiphase armature winding redundancy motor. The control method of the electric driving system for the electric vehicle comprises the steps: when the electric vehicle is started, accelerated and climbs a slope, two sets of armature windings work in an electric-electric mode; during normal operation, if stored energy of the two groups of battery packs is insufficient, the two sets of armature windings work in the electric-electric mode, if the stored energy of the two sets of battery packs is not enough and the electric vehicle does not need providing large torque, the two sets of multiphase armature windings work in a power-generating-electric working mode; during high-speed operation, a reverse excitation current is led; during speed reduction and brake, the two steps of multiphase armature windings work in the power-generating-power mode; and during fault-tolerant processing, the multiphase armature windings work by depending on a normal channel. The combination of the electric driving system and the control method thereof ensures that the vehicle can normally run under multiple conditions.
Description
Technical field
Patent of the present invention relates to a kind of used for electric vehicle power drive system and control method thereof; The used for electric vehicle power drive system is the power drive system that adopts the redundant motor of the heterogeneous double armature winding of a kind of stator permanent magnetic type, and the control method of used for electric vehicle power drive system is through the torque-speed characteristic of different working mode adjustment motor.
Background technology
Current, the sustainable development of auto-industry is faced with two hang-ups: the one, and environmental pollution, the 2nd, the oil resources plaque is weary.Therefore energy-conservation and environmental protection becomes the two principal themes of current global automobile industry development.Various countries also fall over each other to carry out the environmental protection automobile---and the research and development and the industrialization of electronlmobil, wherein motor and drive system thereof are one of core components of electronlmobil.
Basic demand is electronlmobil: 1. bigger starting torque to power drive system; 2. the speed adjustable range of broad; 3. can export constant big torque during low speed, to adapt to requirements such as quick acceleration, load climbing; 4. can export during high speed constant high-power, to adapt to the requirement of running at high speed such as overtake other vehicles; 5. possesses braking energy feedback absorption power; 6. reliability is high, possesses certain fault-tolerant operation ability.
At present, the power-driven system of electronlmobil mainly is made up of single electric system, comprises a main drive motor, electrokinetic cell, power conversion circuit, controller and other accessories composition.Single electric system can not solve the contradiction between motor torque-rotary speed property and the car load power demand well, and its control method also is a mono-.If power invariability then can not satisfy the requirement of acceleration capability and maximum speed; If pursue the car load tractive performance, then must improve power of motor, make motor volume and complete vehicle quality increase.More crucial is that single electric system can't guarantee reliability requirement and stronger fault-tolerant operation ability.Adopt many motor combination structure, then cause car load power drive system complex structure again, volume is big, and cost is also high, and the power drive system control method is also very complicated.
Summary of the invention
Goal of the invention: the present invention provides the good used for electric vehicle power drive system of a kind of serviceability and can under various modes, work, the control method of the used for electric vehicle power drive system of zmodem.
Technical scheme: a kind of used for electric vehicle power drive system comprises two Battery pack groups, two cover control circuit, dc excitation power and motors; Said motor comprises two excitation sources and two cover polyphase armature windings; Said two Battery pack groups are respectively that first control circuit and second control circuit are controlled the first polyphase armature winding and the second polyphase armature winding respectively to first battery pack of first control circuit power supply and second battery pack of supplying power to second control circuit; Said two excitation sources are respectively permanent magnet excitation and electric excitation winding excitation; The first polyphase armature winding is installed on the electric excitation tooth that is provided with electric excitation coil; The second polyphase armature winding is installed on the permanent magnetism tooth of permanent magnet; Two cover polyphase armature windings are formed separate electric excitation passage and permanent magnetism passage, and dc excitation power is given the electric excitation winding power supply on the electric excitation tooth.
The redundant motor of the heterogeneous double armature winding of stator permanent magnetic type can be regarded the combination of the polyphase machine of two different exciting modes as; I.e. compound machine that possesses two autonomous channels; Two excitation sources on it can be realized the coupling and the decoupling zero of permanent magnetic field and electricity excitation magnetic field flexibly according to working condition requirement; Both can produce bigger electromagnetic torque realization low speed high torque operation, can realize constant power wide range speed control operation through weak magnetic again through increasing magnetic; The motor application of redundant excitation of this existence and redundant armature winding structure can solve the contradiction between motor torque-rotary speed property and the car load dynamic property in electric drive system for electric vehicles, and the bigger starting torque and the speed adjustable range of broad are arranged.
Two cover polyphase armature windings of said motor and two groups of supplying cell groups thereof and two cover control circuits are separate respectively; Therefore its mode of operation is also separate, and that said mode of operation comprises is electronic-four kinds of electronic, electric-generatings, generating-electronic, generating-generating.Two cover polyphase armature windings overlap independently control circuit control by two, and two cover control circuits are respectively by the power supply of supplying cell group, the power reduction that the single switch device is born; The redundancy control circuit of the redundant excitation of motor and two cover polyphase armature windings combines, and when the arbitrary parts et out of order of the control circuit of one of them passage, another channel control circuit is unaffected fully.Multiple mode of operation can be good at satisfying automobile frequent starting, acceleration and braking procedure, has improved the reliability of drive system, possesses stronger fault-tolerant operation ability.
Described motor is the redundant motor of the heterogeneous double armature winding of stator permanent magnetic type.
Described motor is the redundant motor of stator permanent magnetic type three-phase double armature winding.
Described first control circuit and second control circuit are power conversion circuit.
The control method of used for electric vehicle power drive system comprises the steps:
1) when electronlmobil starts, quickens and climbs; The first polyphase armature winding and the second polyphase armature winding are operated under electronic-electric model; The electric current combined action of permanent magnet and electric excitation winding at this moment; Can produce the required big excitation field of motor, in the first polyphase armature winding and the second polyphase armature winding, the synthetic excitation magnetic linkage of linkage is bigger; And respectively with the first polyphase armature winding and the second polyphase armature winding in independent armature current coupling energy produce the synthetic output of bigger electromagnetic torque, satisfied startup, acceleration and climbing requirement;
2) when electronlmobil normally moves; If the energy storage of first battery pack and second battery pack is enough; Then break off the energising of dc excitation power and electric excitation winding; Only produce permanent magnet excitation magnetic field by permanent magnet, the first polyphase armature winding and the second polyphase armature winding are operated under electronic-electric model, satisfy general torque output through the size of regulating first control circuit and second control circuit electric current; If the energy storage of first battery pack and second battery pack is not enough and electronlmobil when very big torque need be provided; One in the first polyphase armature winding and the second polyphase armature winding is under the generating mode of operation; The first polyphase armature winding and the second polyphase armature winding work under electric-generating or the generating-electric model, and the induced electric motive force that is operated in the polyphase armature winding under the power generation mode is offered the charging of corresponding battery group through overcommutation;
3) when the electronlmobil high-speed cruising; This moment, whole power drive system load torque was less, required electric excitation winding is passed to reverse exciting current according to rotating speed, weakened permanent magnetic field; Enlarge the constant power high-speed cruising scope of motor, thereby increase the maximum operating speed of electronlmobil;
4) when electronlmobil slows down, glancing impact; The first polyphase armature winding and the second polyphase armature winding all work in generating-power generation mode; Size adjustment air-gap field through control excitation winding electric current; Thereby regulate the induced potential that produces in the first polyphase armature winding and the second polyphase armature winding, and then the energy of above-mentioned two cover polyphase armature winding feedbacks is carried out dynamic On-line Control, realize intelligent charge battery pack;
When 5) power drive system carries out fault-tolerant processing, demagnetization occurs like permanent magnet, electric excitation winding passes to maximum allowed current, to produce enough torque-demands, keeps certain tractive performance, guarantees that automobile can safe operation still under this kind faulty condition; When wherein a Battery pack group, is overlapped polyphase armature winding, a cover control circuit et out of order; Can be through cutting off this passage polyphase armature winding; Rely on normal channel polyphase armature winding that required torque is provided; The assurance electronlmobil can be kept certain tractive performance under this kind faulty condition, safe operation to maintenance station or reliable the parking.
Beneficial effect: electric drive system for electric vehicles provided by the present invention, solved the contradiction between motor torque-rotary speed property and the car load tractive performance, have multiple mode of operation; Electric drive system for electric vehicles control method provided by the present invention can make power drive system under multiple mode of operation, switch preferably; Adapt to automobile frequent starting, acceleration, brake request preferably, greatly improved the reliability and the fault-tolerant operation ability of power drive system.
Description of drawings
Fig. 1 is the structural representation of the redundant motor of the heterogeneous double armature winding of the stator permanent magnetic type that adopts of the present invention;
Fig. 2 is a circuit block diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention.
The specific embodiment of used for electric vehicle power drive system is shown in Fig. 1-2: two separate battery pack are respectively first battery pack 9 and second battery pack 10; First battery pack 9 gives first control circuit 11 power supplies; Second battery pack 10 gives second control circuit 12 power supplies; First control circuit 11 and second control circuit 12 are separate and be power conversion circuit; Connect the first separate three phase armature winding 7 and the second three phase armature winding 8 respectively; Wherein the first three phase armature winding 7 is enclosed within on the electric excitation tooth 2 that is provided with electric excitation coil, and the second three phase armature winding 8 is enclosed within on the permanent magnetism tooth 1 of permanent magnet 5, and dc excitation power 3 gives the electric excitation winding on the electric excitation tooth 26 power supplies separately.
The control method of above-mentioned used for electric vehicle power drive system comprises the steps:
1) when electronlmobil starts, quickens and climbs; The first three phase armature winding 7 and the second three phase armature winding 8 are operated under electronic-electric model; The electric current combined action of permanent magnet 5 and electric excitation winding 6 at this moment; Can produce the required big excitation field of motor 4; In the first three phase armature winding 7 and the second three phase armature winding 8, the synthetic excitation magnetic linkage of linkage is bigger, and respectively with the first three phase armature winding 7 and the second three phase armature winding 8 in independent armature current coupling energy produce the synthetic output of bigger electromagnetic torque.
2) when electronlmobil normally moves; Because the energy storage of first battery pack 9 and second battery pack 10 is enough; Then break off the energising of dc excitation power 3 and electric excitation winding 6; Only produce permanent magnet excitation magnetic field by permanent magnet 5, the first three phase armature winding 7 and the second three phase armature winding 8 are operated under electronic-electric model, satisfy general torque output through the size of regulating first power conversion circuit 11 and second power conversion circuit, 12 electric currents.
3) when the electronlmobil high-speed cruising, this moment, whole power drive system load torque was less, required electric excitation winding 6 is passed to reverse exciting current according to rotating speed, weakened permanent magnetic field, enlarged the constant power high-speed cruising scope of motor 4.
4) when electronlmobil slows down, glancing impact; The first three phase armature winding 7 and the second three phase armature winding 8 all work in generating-power generation mode; Size adjustment air-gap field through control excitation winding 6 electric currents; Thereby regulate the induced potential that produces in the two cover three phase armature windings, and then the energy of above-mentioned two cover three phase armature winding feedbacks is carried out dynamic On-line Control.
When 5) power drive system carries out fault-tolerant processing, when first power conversion circuit, 11 et out of orders wherein, then, rely on the second three phase armature winding 8 that required torque is provided through cutting off the first three phase armature winding 7.
The above only is a preferred implementation of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement, and these improvement also should be regarded as protection scope of the present invention.
Claims (5)
1. a used for electric vehicle power drive system is characterized in that: comprise two Battery pack groups, two cover control circuit, dc excitation power (3) and motors (4); Said motor (4) comprises two excitation sources and two cover polyphase armature windings; Said two Battery pack groups are respectively that first control circuit (11) and second control circuit (12) are controlled the first polyphase armature winding (7) and the second polyphase armature winding (8) respectively to first battery pack (9) of first control circuit (11) power supply and second battery pack (10) of supplying power for second control circuit (12); Said two excitation sources are respectively permanent magnet (5) excitation and electric excitation winding (6) excitation; The first polyphase armature winding (7) is installed on the electric excitation tooth (2) that is provided with electric excitation coil; The second polyphase armature winding (8) is installed on the permanent magnetism tooth (1) of permanent magnet (5); Two cover polyphase armature windings are formed separate electric excitation passage and permanent magnetism passage, and dc excitation power (3) is given the power supply of the electric excitation winding (6) on the electric excitation tooth (2).
2. used for electric vehicle power drive system as claimed in claim 1 is characterized in that: said motor (4) is the redundant motor (4) of the heterogeneous double armature winding of stator permanent magnetic type.
3. used for electric vehicle power drive system as claimed in claim 2 is characterized in that: said motor (4) is the redundant motor (4) of stator permanent magnetic type three-phase double armature winding.
4. used for electric vehicle power drive system as claimed in claim 1 is characterized in that: said first control circuit (11) and second control circuit (12) are power conversion circuit.
5. the control method of used for electric vehicle power drive system as claimed in claim 1 is characterized in that comprising the steps:
1) when electronlmobil starts, quickens and climbs; The first polyphase armature winding (7) and the second polyphase armature winding (8) are operated under electronic-electric model; The electric current combined action of permanent magnet (5) and electric excitation winding (6); Produce the required big excitation field of motor (4); In the first polyphase armature winding (7) and the second polyphase armature winding (8), the synthetic excitation magnetic linkage of linkage is bigger, and respectively with the first polyphase armature winding (7) and the second polyphase armature winding (8) in independent armature current coupling energy produce the synthetic output of bigger electromagnetic torque;
2) when electronlmobil normally moves; If the energy storage of first battery pack (9) and second battery pack (10) is enough; Then break off the energising of dc excitation power (3) and electric excitation winding (6); Only produce permanent magnet excitation magnetic field by permanent magnet (5), the first polyphase armature winding (7) and the second polyphase armature winding (8) are operated under electronic-electric model, satisfy general torque output through the size of regulating first control circuit (11) and second control circuit (12) electric current; If the energy storage of first battery pack (9) and second battery pack (10) inadequately and electronlmobil when very big torque need be provided; Among both one is under the generating mode of operation for the first polyphase armature winding (7) and the second polyphase armature winding (8); The first polyphase armature winding (7) and the second polyphase armature winding (8) work under electric-generating or the generating-electric model, and the induced electric motive force that is operated in the polyphase armature winding under the power generation mode is offered the charging of corresponding battery group through overcommutation;
3) when the electronlmobil high-speed cruising, require electric excitation winding (6) is passed to reverse exciting current according to rotating speed, weaken permanent magnetic field, enlarge the constant power high-speed cruising scope of motor (4);
4) when electronlmobil slows down, glancing impact; The first polyphase armature winding (7) and the second polyphase armature winding (8) all work in generating-power generation mode; Size adjustment air-gap field through control excitation winding (6) electric current; Thereby regulate the induced potential that produces in the first polyphase armature winding (7) and the second polyphase armature winding (8), and then the energy of above-mentioned two cover polyphase armature winding feedbacks is carried out dynamic On-line Control, realize intelligent charge battery pack;
When 5) power drive system carried out fault-tolerant processing, when demagnetization appearred in permanent magnet (5), electric excitation winding (6) passed to maximum allowed current, to produce enough torque-demands, keeps certain tractive performance; When wherein a Battery pack group, is overlapped polyphase armature winding, a cover control circuit et out of order,, rely on normal channel polyphase armature winding that required torque is provided through cutting off this passage polyphase armature winding.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107968614A (en) * | 2017-12-18 | 2018-04-27 | 远景能源(江苏)有限公司 | Demagnetization guard method applied to magneto |
CN111953163A (en) * | 2020-08-11 | 2020-11-17 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof |
CN112234886A (en) * | 2020-08-27 | 2021-01-15 | 贵州恒芯微电子科技有限公司 | Reverse excitation method of starting all-in-one machine |
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CN101277053A (en) * | 2008-05-13 | 2008-10-01 | 东南大学 | Mixed field excitation type flux switch motor |
CN101789641A (en) * | 2010-03-09 | 2010-07-28 | 南京航空航天大学 | Electro-magnetic flux switching motor |
CN201868960U (en) * | 2010-11-23 | 2011-06-15 | 东南大学 | Magnetic flux changing-over power generator |
CN202186296U (en) * | 2011-08-18 | 2012-04-11 | 东南大学 | Electric driving system for electric automobile |
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2011
- 2011-08-18 CN CN2011102372734A patent/CN102358208B/en not_active Expired - Fee Related
Patent Citations (5)
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US5598072A (en) * | 1995-04-04 | 1997-01-28 | General Electric Company | Regenerative braking circuit utilizing separately excited motor |
CN101277053A (en) * | 2008-05-13 | 2008-10-01 | 东南大学 | Mixed field excitation type flux switch motor |
CN101789641A (en) * | 2010-03-09 | 2010-07-28 | 南京航空航天大学 | Electro-magnetic flux switching motor |
CN201868960U (en) * | 2010-11-23 | 2011-06-15 | 东南大学 | Magnetic flux changing-over power generator |
CN202186296U (en) * | 2011-08-18 | 2012-04-11 | 东南大学 | Electric driving system for electric automobile |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107968614A (en) * | 2017-12-18 | 2018-04-27 | 远景能源(江苏)有限公司 | Demagnetization guard method applied to magneto |
CN111953163A (en) * | 2020-08-11 | 2020-11-17 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof |
CN111953163B (en) * | 2020-08-11 | 2023-07-14 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof |
CN112234886A (en) * | 2020-08-27 | 2021-01-15 | 贵州恒芯微电子科技有限公司 | Reverse excitation method of starting all-in-one machine |
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