CN102358208B - 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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- CN102358208B CN102358208B CN2011102372734A CN201110237273A CN102358208B CN 102358208 B CN102358208 B CN 102358208B CN 2011102372734 A CN2011102372734 A CN 2011102372734A CN 201110237273 A CN201110237273 A CN 201110237273A CN 102358208 B CN102358208 B CN 102358208B
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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 electric driving system for electric automobile and control method thereof, electric driving system for electric automobile 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 electric driving system for electric automobile is adjusted the torque-speed characteristic of motor by different mode of operations.
Background technology
Current, the Faced In Sustainable Development of auto-industry 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 Auto industrial development.Various countries also fall over each other the Developing Green environmentally friendly vehicle---and 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 to power drive system: 1. larger starting torque; 2. wider speed adjustable range; 3. can export constant large torque during low speed, to adapt to the requirements such as quick acceleration, load climbing; 4. can export during high speed constant high-power, to adapt to the high speed such as the overtake other vehicles requirement of travelling; 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 comprised of single electric system, comprises that a main drive motor, electrokinetic cell, power conversion circuit, controller and other accessories form.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 single.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, so that motor volume and complete vehicle quality increase.More crucial is single electric system can't guarantee reliability requirement and stronger fault-tolerant operation ability.Adopt many motor combination structure, then cause again car load power drive system complex structure, volume is large, 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 invention provides the good electric driving system for electric automobile of a kind of serviceability and can under various modes, work the control method of the electric driving system for electric automobile of zmodem.
Technical scheme: a kind of electric driving system for electric automobile comprises two Battery pack groups, two cover control circuit, dc excitation power and motors; Described motor comprises two excitation sources and two cover polyphase armature windings; Described two Battery pack groups are respectively that first control circuit and second control circuit are controlled respectively the first polyphase armature winding and the second polyphase armature winding to the first battery pack of first control circuit power supply and second battery pack of powering to second control circuit; Described 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 form 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 flexibly according to working condition requirement coupling and the decoupling zero of permanent magnetic field and electricity excitation magnetic field, both can produce larger electromagnetic torque realization low speed high torque operation by increasing magnetic, can realize constant power wide range speed control operation by weak magnetic again; The motor application of the redundant excitation of this existence and redundant armature winding structure can solve contradiction between motor torque-rotary speed property and the car load dynamic property in electric drive system for electric vehicles, and larger starting torque and wider speed adjustable range are arranged.
Two cover polyphase armature windings of described 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 described 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 redundant excitation of motor is combined with the redundancy control circuit of two cover polyphase armature windings, and when the arbitrary parts et out of order of the control circuit of one of them passage, another channel control circuit is fully unaffected.Multiple-working mode 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 electric driving system for electric automobile comprises the steps:
1) when electronlmobil starts, accelerates and climbs, the first polyphase armature winding and the second polyphase armature winding are operated under electronic-electric model, the at this moment electric current combined action of permanent magnet and electric excitation winding, can produce the required larger excitation field of motor, in the first polyphase armature winding and the second polyphase armature winding, the synthetic excitation flux linkage of linkage is larger, 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 larger electromagnetic torque, satisfied startup, acceleration and climbing requirement;
2) when electronlmobil normally moves, if the energy storage of the first battery pack and the second battery pack is enough, then disconnect 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 by the size of regulating first control circuit and second control circuit electric current; If the energy storage of the first battery pack and the second battery pack not and electronlmobil when not needing to provide very large torque, 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 corresponding batteries charging 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 deceleration, braking, the first polyphase armature winding and the second polyphase armature winding all work in generating-power generation mode, size adjustment air-gap field by 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 are carried out dynamic On-line Control, realize the intelligent charge to battery pack;
When 5) power drive system carries out fault-tolerant processing, demagnetization occurs such as permanent magnet, electric excitation winding passes to maximum allowed current, to produce enough torque-demands, keeps certain tractive performance, guarantees that automobile can still safe operation 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 by 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 is to maintenance station or stably stop.
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-working mode; Electric drive system for electric vehicles control method provided by the present invention can make power drive system switch preferably under multiple-working mode, adapt to preferably automobile frequent starting, acceleration, brake request, greatly improved 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 stator permanent magnetic type of the present invention;
Fig. 2 is circuit block diagram of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention.
The specific embodiment of electric driving system for electric automobile is shown in Fig. 1-2: two separate battery pack are respectively the first battery pack 9 and the second battery pack 10, the first battery pack 9 gives first control circuit 11 power supplies, the 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 respectively the first separate three phase armature winding 7 and the second three phase armature winding 8, wherein the first three phase armature winding 7 is enclosed within on the electric excitation tooth 2 that is provided with electric excitation coil, 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 separately the electric excitation winding on the electric excitation tooth 26 power supplies.
The control method of above-mentioned electric driving system for electric automobile comprises the steps:
1) when electronlmobil starts, accelerates and climbs, the first three phase armature winding 7 and the second three phase armature winding 8 are operated under electronic-electric model, the at this moment electric current combined action of permanent magnet 5 and electric excitation winding 6, can produce the required larger excitation field of motor 4, in the first three phase armature winding 7 and the second three phase armature winding 8, the synthetic excitation flux linkage of linkage is larger, 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 larger electromagnetic torque.
2) when electronlmobil normally moves, because the energy storage of the first battery pack 9 and the second battery pack 10 is enough, then disconnect 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 by the size of regulating the first power conversion circuit 11 and the 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 deceleration, braking, 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 by 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 the first power conversion circuit 11 et out of order wherein, then by cutting off the first three phase armature winding 7, rely on the second three phase armature winding 8 that required torque is provided.
The above only is 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 considered as protection scope of the present invention.
Claims (5)
1. an electric driving system for electric automobile is characterized in that: comprise two Battery pack groups, two cover control circuit, dc excitation power (3) and motors (4); Described motor (4) comprises two excitation sources and two cover polyphase armature windings; Described two Battery pack groups are respectively that first control circuit (11) and second control circuit (12) are controlled respectively the first polyphase armature winding (7) and the second polyphase armature winding (8) to first battery pack (9) of first control circuit (11) power supply and second battery pack (10) of powering to second control circuit (12); Described 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 winding (6), the second polyphase armature winding (8) is installed on the permanent magnetism tooth (1) of permanent magnet (5), two cover polyphase armature windings form 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. electric driving system for electric automobile as claimed in claim 1 is characterized in that: described motor (4) is the redundant motor (4) of the heterogeneous double armature winding of stator permanent magnetic type.
3. electric driving system for electric automobile as claimed in claim 2 is characterized in that: described motor (4) is the redundant motor (4) of stator permanent magnetic type three-phase double armature winding.
4. electric driving system for electric automobile as claimed in claim 1, it is characterized in that: described first control circuit (11) and second control circuit (12) are power conversion circuit.
5. the control method of electric driving system for electric automobile as claimed in claim 1 is characterized in that comprising the steps:
1) when the electronlmobil startup, when acceleration and climbing, 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 larger excitation field of motor (4), in the first polyphase armature winding (7) and the second polyphase armature winding (8), the synthetic excitation flux linkage of linkage is larger, 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 larger electromagnetic torque;
2) when electronlmobil normally moves, if the energy storage of the first battery pack (9) and the second battery pack (10) is enough, then disconnect 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 by the size of regulating first control circuit (11) and second control circuit (12) electric current; If the energy storage of the first battery pack (9) and the second battery pack (10) not and electronlmobil when not needing to provide very large torque, among both one is under the generating mode of operation for the first polyphase armature winding (7) and the second polyphase armature winding (8), that the first polyphase armature winding (7) and the second polyphase armature winding (8) work in is electronic-generating or generating-electric model under, the induced electric motive force that is operated in the polyphase armature winding under the power generation mode is offered corresponding batteries charging 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 deceleration, braking, 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 by 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 are carried out dynamic On-line Control, realize the intelligent charge to 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, by cutting off this passage polyphase armature winding, rely on normal channel polyphase armature winding that required torque is provided.
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| CN2011102372734A CN102358208B (en) | 2011-08-18 | 2011-08-18 | Electric driving system for electric vehicle and control method of electric driving system |
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| CN2011102372734A CN102358208B (en) | 2011-08-18 | 2011-08-18 | Electric driving system for electric vehicle and control method of electric driving system |
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| CN102358208B true CN102358208B (en) | 2013-10-30 |
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| CN107968614B (en) * | 2017-12-18 | 2020-12-25 | 远景能源有限公司 | Demagnetization protection method applied to permanent magnet motor |
| 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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| 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 |
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- 2011-08-18 CN CN2011102372734A patent/CN102358208B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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