CN103568865A - Power system of extended-range electric vehicle - Google Patents
Power system of extended-range electric vehicle Download PDFInfo
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- CN103568865A CN103568865A CN201210264786.9A CN201210264786A CN103568865A CN 103568865 A CN103568865 A CN 103568865A CN 201210264786 A CN201210264786 A CN 201210264786A CN 103568865 A CN103568865 A CN 103568865A
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention relates to a power system of an extended-range electric vehicle. The power system comprises a hybrid excitation synchronous motor and a doubly salient electro-magnetic motor. The hybrid excitation synchronous motor is provided with two magnetic potential sources inside, namely permanent magnets and excitation coils, and also provided with an axial magnetic circuit and a radial magnetic circuit; electro-magnetic windings are in series connection in the axial magnetic circuit. A stator and rotors of the doubly salient electro-magnetic motor are of salient tooth-socket structures, and concentrated armature windings and excitation windings are mounted on the stator. A drive system of the hybrid excitation synchronous motor and a doubly salient power generation system are connected with system control bus respectively, so that the communications among the complete vehicle controller, the drive system and the power generation system are realized through the system control bus. The drive system and the power generation system send system status control signals to the complete vehicle controller, the power generation system acquires running status signals of the drive system through the complete vehicle controller, and further, control of the output power of the power generation system is realized according to a control strategy of the power generation system. According to the scheme of the power system of the extended-range electric vehicle provided, purposes of reducing the complete vehicle cost, extending duration range, saving energy while protecting environments are achieved.
Description
Technical field
The present invention relates to automotive technology, particularly relate to a kind of power system of stroke-increasing electric automobile.
Background technology
The power system of stroke-increasing electric automobile mainly comprises drive system, power generating system, battery system three parts.Drive system comprises drive motor and controller thereof, and power generating system comprises increasing journey generator set and controller thereof, and battery system comprises high voltage power battery and battery management unit.
Driving motor for electric automobile mainly contains induction motor, switched reluctance machines, permagnetic synchronous motor at present.Induction motor is simple in structure, price is lower, and noise is little, but controls complexity, and system cost is high; Switched reluctance machines is simple in structure, but torque fluctuation is large, noise is large, and efficiency and power density are low; Magneto-electric machine efficiency and power density are high, torque controller performance is good, but air-gap field is difficult to regulate, weak magnetic control system difficulty ,Heng power district and high efficient area narrow.
Increase at present journey electrical generator and mainly have synchronous electric generator, asynchronous generator and mag-dynamo three classes.Synchronous electric generator volume is large, power density is on the low side; Asynchronous generator excitation reactive volt-amperes is larger, and voltage-regulation difficulty, controls complexity, and system effectiveness is lower; Permagnetic synchronous motor power density is high, but magnetic field is difficult to adjusting, and output regulates difficulty, needs full power translation circuit, and system architecture and control are complicated, and rare earth permanent-magnetic material cost is high.
Pure electric automobile industrialization on a large scale at present, major cause is that battery cost is high, course continuation mileage is short.Battery cost accounts for the nearly 50% of car load price, and the life-span of battery generally in 2 ~ 3 years, operation and maintenance cost is very high; The deadweight of these batteries is simultaneously quite huge, has greatly increased complete vehicle weight, has affected course continuation mileage, generally 200 kilometers of left and right.
Summary of the invention
The problem existing in order to solve above-mentioned pure electric automobile, the present invention proposes a kind of range extended electric vehicle power system scheme, has reached and has reduced integral vehicle cost and increase the course continuation mileage object of energy-conserving and environment-protective again.
The technical solution used in the present invention is for this reason:
includehybrid exciting synchronous motor, motor internal comprises permanent magnet and two magnetic potential sources of excitation coil, also has axial magnetic circuit and radial magnetic circuit simultaneously, is connected in series electric excitation winding in axial magnetic circuit;
Electric excitation biconvex electrode electric machine, electric machine rotor is salient pole tooth slot structure, is provided with and concentrates armature loop and excitation winding on stator;
Hybrid exciting synchronous motor drive system is connected with system control bus respectively with double-salient-pole power generating system, by system control bus, realized the communication between entire car controller and drive system and power generating system, drive system and power generating system are sent to entire car controller by state of the system control signal, power generating system obtains the operating state signal of drive system by entire car controller, in conjunction with power generating system control policy, realize the output power to power generating system.
Advantage of the present invention is: the present invention has carried out original innovation and the integrated application of mixed excitation electric machine actuation techniques and dual protruding pole brushless DC generation technology, form the complex art system driving with generating, realized extended-range electrobus drive system brand-new scheme.Not only in driving way, to battery charge, to drive motor, power simultaneously, increased continual mileage.To promoting the overall technology of stroke-increasing electric automobile to break through, accelerate automobile industry structural adjustment, the technology upgrading of driving automobile industry and development, advance new-energy automobile industrialization process, and the world market influence power of lifting China new-energy automobile industry and competitive edge etc. are all significant.
Accompanying drawing explanation
Fig. 1 is hybrid exciting synchronous motor driving system structure figure.
Fig. 2 is dual protruding pole brushless DC starting-generating system diagram.
Specific implementation
The present invention has adopted efficient hybrid exciting synchronous motor actuation techniques, has overcome the weak magnetic control system difficulty of existing permagnetic synchronous motor, the narrow problem in high efficient area, has the advantages that permanent power district is wide, speed adjustable range is wide, efficiency is high.Hybrid exciting synchronous motor uses vector control technology, has increased high-efficiency operation district, has expanded weak magnetism speed expansion scope simultaneously, has optimized car load tractive performance.
Hybrid exciting synchronous motor is on the basis of tangential magnetic field permagnetic synchronous motor, adopted rotor magnetizer magnetic shunt structure, motor internal comprises permanent magnet and two magnetic potential sources of excitation coil, also there is axial magnetic circuit and radial magnetic circuit simultaneously, in axial magnetic circuit, be connected in series electric excitation winding, by regulating exciting current to control axial magnetic flux, because magnetic flux summation is constant, radial magnetic field changes with the adjusting of axial magnetic field, has realized the weak magnetic of radial magnetic field and has regulated.Armature current in armature loop adopts vector controlled, coordinates to control with exciting current simultaneously, has obtained larger horsepower output and wider output-constant operation district.
When drive motor rotating speed moves below base speed, exciting current is constant maximum value, and hybrid exciting synchronous motor is operated in increasing magnetic state, realizes low speed high torque output; When base speed is moved above, by reducing the size of exciting current, realize weak magnetic control system, motor internal magnetic field degree of saturation is low, iron loss is little, and electric excitation winding exciting current is little, copper loss is low.By the coordination of armature current and exciting current, control air-gap flux is regulated, under the certain prerequisite of power system capacity, can obtain larger horsepower output and wider output-constant operation scope.
The watt level of hybrid exciting synchronous motor is according to the weight of car load and maximum speed and reasonably transmission is recently definite, and designs this motor according to the overload capacity of approximately 2 times; Whether short-term operation characteristic and torque characteristics according to the max. climb slope checking drive motor of vehicle meet the demands; The fundamental frequency point of drive motor overlaps with the conventional speed of a motor vehicle point of automobile; The power balance point of automobile maximum speed of revolution drops on the permanent power working curve of motor.
The present invention has adopted double-salient-pole power generating system starting-generating integration technology, saves actuating motor, has simplified system architecture, improves system power density, efficiency and reliability.
Electric excitation biconvex electrode electric machine, electric machine rotor is salient pole tooth slot structure, on stator, be provided with and concentrate armature loop and excitation winding, on rotor without winding and magnet steel, brushless and commutator, regulate the exciting current size of excitation winding, can realize output power, there is simple in structure, the high and low cost of reliability, high efficiency and control feature flexibly.Doubly-salient brushless DC generator is during as generator operation, and when additional mechanical force transmission makes rotor rotate by a direction, the magnetic linkage of every phase armature loop institute linkage changes, and winding is by induced electric motive force.When load or rotation speed change, can export by regulating exciting current size to maintain constant potential, three phase windings, by diode rectifier circuit, send direct current (DC), do not need position transduser and controlled power changer.Also can control four-quadrant electric operation by power inverter.Simple in structure, reliability is high.Owing to adopting electromagnetic type Excitation Method of Generators, be easy to realize output voltage and regulate and De-excitation at fault.
System power, according to permanent power operating characteristic and the maximum charge power of drive motor, is determined after carrying out simulator system.According to the total external characteristics of driving engine and characteristic performance curve, select optimal work area afterwards, to reach the object of maximum power, combustion with minimal, minimum oil consumption.
The present invention adopts drive motor vector controlled and power generating system digital intelligent control integration technology.Optimize control structure, simplified whole-control system.
Hybrid exciting synchronous motor drive system is connected with system control bus respectively with double-salient-pole power generating system, by system control bus, has realized the communication between entire car controller and drive system and power generating system.Drive system and power generating system are sent to entire car controller by state of the system control signal, and power generating system obtains the operating state signal of drive system by entire car controller, in conjunction with power generating system control policy, realize the output power to power generating system.Drive system, according to the control policy of power generating system status signal and drive system, realizes drive system power is controlled.Realized the integrated of control technology between drive system and power generating system.
Drive motor vector controlled and power generating system digital intelligent control integration technology; having realized the coordination of driving governor and engine controller control policy controls; guaranteed the coordination control between power generating system double salient-pole electric machine exciting current, drive system mixed excitation electric machine exciting current, armature current etc.; realized structure and the efficiency optimization of whole-control system, the power having met between power generating system, storage battery and drive system coordinates and system protection.
When double-salient-pole power generating system is made generator operation, the status signal of drive system sends to engine controller by entire car controller, according to the status signal from drive system and system control strategy, the judgement residing running state of drive motor and power demand, regulate double salient-pole electric machine exciting current size, realize rational power stage.Hybrid exciting synchronous motor drive system; adopt the control method for coordinating of armature current vector controlled and exciting current; by come self-generating system horsepower output and and voltage and current signal; analyze the running state of power generating system; according to the control policy of the status signal of power generating system and drive system; by regulating armature current and exciting current, the power of realizing drive system and power generating system coordinates and system protection.
Claims (1)
1.
range extended electric vehicle power system, is characterized in that, includeshybrid exciting synchronous motor, motor internal comprises permanent magnet and two magnetic potential sources of excitation coil, also has axial magnetic circuit and radial magnetic circuit simultaneously, is connected in series electric excitation winding in axial magnetic circuit;
Electric excitation biconvex electrode electric machine, electric machine rotor is salient pole tooth slot structure, is provided with and concentrates armature loop and excitation winding on stator;
Hybrid exciting synchronous motor drive system is connected with system control bus respectively with double-salient-pole power generating system, by system control bus, realized the communication between entire car controller and drive system and power generating system, drive system and power generating system are sent to entire car controller by state of the system control signal, power generating system obtains the operating state signal of drive system by entire car controller, in conjunction with power generating system control policy, realize the output power to power generating system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210264786.9A CN103568865A (en) | 2012-07-30 | 2012-07-30 | Power system of extended-range electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210264786.9A CN103568865A (en) | 2012-07-30 | 2012-07-30 | Power system of extended-range electric vehicle |
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| CN103568865A true CN103568865A (en) | 2014-02-12 |
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| CN201210264786.9A Pending CN103568865A (en) | 2012-07-30 | 2012-07-30 | Power system of extended-range electric vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364367A (en) * | 2017-08-15 | 2017-11-21 | 东南大学盐城新能源汽车研究院 | A kind of integrated motor driving and on-board charging system based on more excitation source motors |
| CN109808515A (en) * | 2019-03-25 | 2019-05-28 | 北京动力源新能源科技有限责任公司 | Extended-range device and electric car based on excitation generator |
-
2012
- 2012-07-30 CN CN201210264786.9A patent/CN103568865A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364367A (en) * | 2017-08-15 | 2017-11-21 | 东南大学盐城新能源汽车研究院 | A kind of integrated motor driving and on-board charging system based on more excitation source motors |
| CN109808515A (en) * | 2019-03-25 | 2019-05-28 | 北京动力源新能源科技有限责任公司 | Extended-range device and electric car based on excitation generator |
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Application publication date: 20140212 |