CN105730217A - Electromagnetic variable-torque driving system of electric vehicle - Google Patents
Electromagnetic variable-torque driving system of electric vehicle Download PDFInfo
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- CN105730217A CN105730217A CN201610115761.0A CN201610115761A CN105730217A CN 105730217 A CN105730217 A CN 105730217A CN 201610115761 A CN201610115761 A CN 201610115761A CN 105730217 A CN105730217 A CN 105730217A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
- B60L2220/14—Synchronous machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a driving system of an electric vehicle, in particular to an electromagnetic variable-torque driving system of an electric vehicle. The electromagnetic variable-torque driving system comprises an electromagnetic variable-torque driving device, a power cell, an electronic controller, a three-phase bridge type full control inverter circuit and a three-phase rectification circuit, wherein the electromagnetic variable-torque driving device comprises a three-phase separate excitation type synchronous motor and an electromagnetic variable-torque motor, and a rotor of the three-phase separate excitation type synchronous motor is connected with an inner rotor of the electromagnetic variable-torque motor; the power cell is connected with an input end of the three-phase bridge type full control inverter circuit, and an output end of the three-phase bridge type full control inverter circuit is connected with an armature winding of the three-phase separate excitation type synchronous motor; a magnetic pole winding of the inner rotor of the electromagnetic variable-torque motor is connected with an excitation winding of the three-phase separate excitation type synchronous motor through the three-phase rectification circuit, and an outer rotor of the electromagnetic variable-torque motor is connected with a hub. According to the electromagnetic variable-torque driving system disclosed by the invention, a completely new concept of electromagnetic variable-torque drive is provided, the electromagnetic variable-torque drive is realized through a specific structure, and an electric wheel of the electromagnetic variable-toque drive can have a great market application prospect.
Description
Technical field
The present invention relates to the drive system of electric automobile, be specially electric automobile electromagnetism bending moment drive system.
Background technology
Common internal combustion powered vehicles is to be heat energy by the chemical energy of gasoline or diesel oil, is being converted into the mechanical energy driving automobile to advance via heat energy.There is not high problem of the thermal efficiency in this mode, for gasoline engine, even if turbocharging or VVT VVT etc., also with regard to maximum 30% thermal efficiency conversions, (the diesel oil thermal efficiency is high, only about 40%) brake heat energy when, all the other major part heat energy all become heat of engine or braking is released in vain.And through change speed gear box, main reducing gear finally arrive wheel drive thermal efficiency value just lower, 5%-10% at most.Heat energy is released in vain, and this is the loss in efficiency of the common automobile being representative with gasoline (diesel oil).And the city driving that blocks up, braking is arrived in frequently starting, acceleration again, also can more consume by aggravation car oil.Although we can by certain technology, such as advanced change speed gear box amplifies low speed torque to strengthen vehicle starting ability, but the working method of internal combustion engine itself to have had decided to his moment of torsion of starting to walk relatively low, even if introducing turbocharging in-cylinder direct-jet technology is also of no avail.
Affixing one's name to the EIA international energy issued prospect according to american energy information, world energy sources market consumption quantity estimates increase by 50% to the year two thousand thirty in 2005.Along with the increase year by year of energy resource consumption, the discharge capacity of carbon dioxide also will increase, and in current CO2 emission, 25% comes from automobile.To the year two thousand thirty, 42,300,000,000 tons will be increased to by 28,100,000,000 tons of 2005.In China, the pollution of motor vehicle emission has become as the key factor of urban atmospheric pollution, and the CO2 emission of China has occupied the whole world second at present, and the pressure of reducing emission of carbon dioxide is by increasing.
In recent years, the China Automobile Industry of China is rapid, it has also become the fourth-largest automobile production state of the world and the third-largest automobile consumption state.Estimating according to Development Research Center of the State Council, being up to 1.4 hundred million to the year two thousand twenty, the fuel demand of motor vehicles is 2.56 hundred million tons, for the 57% of whole nation oil aggregate demand then.The petroleum resources shortage of China, current petroleum import amount increases with the percentage ratio of annual two digits, it is contemplated that will more than 50% to the year two thousand twenty importation dependence.Therefore new-energy automobile is greatly developed, electricity consumption generation oil, it is to ensure that the Strategic Measure of Chinese energy safety.Therefore greatly developing new-energy automobile is realize Chinese energy safety, environmental conservation and Chinese Automobile Industry ' to realize the needs of great-leap-forward, sustainable development.
At present, hub-type power drive system is emerging a kind of electric automobile drive form.Hub-type power drive system has direct drive Electric Motor Wheel and two kinds of primitive forms of wheel rim deceleration device Electric Motor Wheel.Motor is directly arranged in hub for vehicle wheel by it, eliminates the parts such as traditional clutch, change speed gear box, main reducing gear and differential mechanism, enormously simplify complete vehicle structure, improves transmission efficiency, and can pass through control technology and realize the Electronic differential control to Electric Motor Wheel.Thus Electric Motor Wheel becomes the developing direction of following electric automobile.
Direct drive electric automobile adopts low speed outer rotor motor, Electric Motor Wheel and wheel one whole parts of composition, adopts electronic differential mode, and motor is arranged in inside wheel, and direct drive of wheel driving automobile travels.Its major advantage is exactly that motor volume is little, light weight and cost low, drive system efficiency is high, compact conformation, had both been beneficial to complete vehicle structure and has arranged and vehicle body design, and had also allowed for Transform Type design.Outer rotor is directly arranged on the wheel rim of wheel and drives vehicle wheel rotation by this Electric Motor Wheel.But electric automobile needs bigger torque when starting, say, that the motor being arranged in direct driving Electric Motor Wheel must be able to provide big torque when low speed.In order to enable automobile to have good power, motor must also have very wide torque and rotational speed regulation scope.Owing to motor work produces certain shock and vibration, also require that rim for automobile wheel and wheel support must be firm, reliable, simultaneously because nonspring carried mass is big, ensure the comfortableness of vehicle, require suspension system flexible member and damping element are optimized design, motor output torque and power are also affected by the restriction of wheel diameters, and system cost is high.
Wheel rim deceleration device Electric Motor Wheel power drive system adopts high speed inner rotor motor, can be suitable for the service requirement of modern high performance electric automobile.It originates from the conventional electric wheel of mine car, belong to deceleration type, this Electric Motor Wheel allows motor to run at high speeds, the maximum speed of usual motor designs between 4000r/min～20000r/min, its purpose is to be obtained in that higher specific power, and other performance of motor is not had particular/special requirement, therefore can adopt common internal rotor high-speed motor.Reducing gear is arranged between motor and wheel, plays the effect slowed down and increase square, thus ensureing that electric automobile is obtained in that sufficiently large torque when low speed.Motor output shaft is connected with wheel drive shaft by reducing gear, makes motor bearings directly not bear the load effect of wheel and road surface, improves the working condition of bearing；Adopt fixed speed ratio planetary reducer, make system have bigger speed adjustable range and output torque, give full play to the governor control characteristics of drive motor, overcome motor output torque and power is subject to the problem that wheel diameters affects.Design is mainly considered as solve the work noise of gear and lubrication problem, its nonspring carried mass also big than direct drive Electric Motor Wheel power drive system, the Scheme design of motor and internal system is required higher.
Electric wheeled power drive system is to be currently used in the electrically driven (operated) most common method of electric automobile.It is respectively arranged with pluses and minuses: direct drive electric automobile must provide the driving electric current of several times rated current when starting and acceleration in order to obtain big detent torque to motor from above two driving method.The equipment such as electronic-controlled installation, motor, battery are caused very big surge by the driving electric current of several times rated current, especially more reset standby work load when frequent start-stop, thus reducing the service life of equipment and the safety of use.It is drive motor that direct drive motor is typically all with permanent magnet brushless electromotor, and because of the restriction by permanent magnet material, current maximum motor power also only has tens kilowatts；Secondly, the excitation of p-m rotor cannot regulate, and causes electric machine speed regulation difficulty, and speed adjustable range is not wide；Wheel rim deceleration device Electric Motor Wheel power drive system solves the problem that direct drive motor should not start, but which increase set of gears deceleration device, if during gear reduction ratio 1:10, vehicle wheel rotational speed is 1500r/min, and the rotating speed of motor is minimum also should at more than 15000r/min.(during general low rate start, the speed reducing ratio from electromotor to wheel is at more than 1:13) wheel rim deceleration device Electric Motor Wheel power drive system gear ratio is fixed, the condition of high start torque is met during low rate start, but the rotating speed of motor is just higher than 15000r/min when high speed, this is accomplished by more accurate mechanical transmission structure and Pulvis Emolliens thermal.This manufacture difficulty being also increased by drive system and cost.
Summary of the invention
The present invention solves the problems referred to above, it is provided that electric automobile electromagnetism bending moment drive system, this system be based on Electric Motor Wheel directly drive with wheel rim deceleration device drive and propose there is the efficient novel electric vehicle drive system of electromagnetism bending moment function.
The present invention adopts the following technical scheme that realization: electric automobile electromagnetism bending moment drive system, including electromagnetism bending moment driving device, capacity cell, electronic controller, three phase bridge all control inverter circuit and rectified three-phase circuit, electromagnetism bending moment driving device includes three-phase independent-excited synchronous motor and electromagnetism torque-converting motor, the rotor of three-phase independent-excited synchronous motor and the internal rotor of electromagnetism torque-converting motor connect, the input of capacity cell and three phase bridge all control inverter circuit connects, the outfan of three phase bridge all control inverter circuit and the armature winding of three-phase independent-excited synchronous motor connect, three phase bridge all control inverter circuit is controlled by electronic controller, the internal rotor magnetic pole winding of electromagnetism torque-converting motor is connected by the Exciting Windings for Transverse Differential Protection of rectified three-phase circuit and three-phase independent-excited synchronous motor, the outer rotor of electromagnetism torque-converting motor and wheel hub connect.
During work, capacity cell produces controlled three phase sine alternating current by electronic controller and drives three-phase independent-excited synchronous motor to rotate (reluctance torque startup).Owing to three-phase independent-excited synchronous electric motor rotor is coaxial with electromagnetism torque-converting motor, namely drive electromagnetism torque-converting motor internal rotor synchronous rotary.The outer rotor speed now driving wheel hub is zero, and on internal rotor, magnetic pole winding cuts external rotor permanent magnet magnetic field and produces induced potential.It is applied directly in the Exciting Windings for Transverse Differential Protection of three-phase independent-excited synchronous motor after this induced potential is rectified, defines the excitation field of three-phase independent-excited synchronous motor.Owing to three-phase independent-excited synchronous machinery excitation electric current is directly proportional to armature supply, when armature voltage is fixing, adjust the output speed of synchronous motor according to the change of armature supply.This rotating speed is applied to again on the internal rotor of electromagnetism torque-converting motor, and on internal rotor, magnetic pole winding voltage also will change therewith, and the change of its value further changes the exciting current of three-phase independent-excited synchronous motor.This is a positive feedback process.This positive feedback process is applied to the moment on electromagnetism torque-converting motor outer rotor at rapid increase, if continuing to improve armature voltage, after the output torque of electromagnetism torque-converting motor outer rotor overcomes frictional resistance, just starting to rotate, this accelerator is electromagnetism bending moment and drives process.The driving of electromagnetism bending moment is a completely new concept of electric automobile In-wheel-motor driving, it internal-combustion engines vehicle has been applied maturation hydraulic moment changeable technology by electromagnetism realize in In-wheel-motor driving bending moment drive, thus reach and internal combustion type drive the same effect drive characteristic.
Above-mentioned electric automobile electromagnetism bending moment drive system, also includes gravity electric generator and rectification circuit, and the winding of gravity electric generator and the input of rectification circuit connect, and the outfan of rectification circuit is connected on the connection line of capacity cell and rectified three-phase circuit.Reclaim automobile by gravity electric generator and produce the energy lost that pitches because of pavement roughness, improve the flying power of electric automobile.
Electric automobile electromagnetism bending moment drive system has the following characteristics that
1) electromagnetism bending moment drives and can realize big detent torque under rated current.When adopting permanent magnetic brushless to drive, owing to motor outer rotor is directly connected with wheel hub, it can not realize bending moment and drive.In order to overcome resistance must apply the electric current of super large to motor during startup, this to controlling system and motor formation impact itself, will reduce service life.
2) electromagnetism bending moment drives the value that can be automatically adjusted rotating speed with torque.Big detent torque must be obtained particularly in automotive wheels when starting could become dynamically from static state.Driving at electromagnetism bending moment is that motor speed just can be carried from zero and gets several thousand or up to ten thousand turns by synchronous motor when wheel is in static, this will produce the detent torque of the nominal torque of several times or decades of times in Electric Motor Wheel, this characteristic parent and realization of easily lifting in electromagnetism bending moment driving process.If the control voltage given when Electric Motor Wheel speed rises is constant, the rising with rotating speed is reduced by torque.Adaptive ability is reached when walking resistance increase hourly velocity reduction torque promotes accordingly.
3) adopt the driving of electromagnetism bending moment to make motor and wheel achieve to be flexible coupling, it is achieved that load and the isolation of power source, alleviate the load dynamic impact to motor, improve the service life of drive system.
4) the coaxial not consubstantiality of torque-converting motor and synchronous motor, make the heat that produces in operation must not superposition, radiating effect substantially provides.
5) high-power driving can be realized.When power invariability, the volume of motor and output speed are inversely proportional to, and therefore, it is very big that the power density of motor can be done.
In-wheel-motor driving will be the developing direction of following electric automobile, and the present invention proposes electromagnetism bending moment and drives this novel concept, and realize the driving of electromagnetism bending moment by concrete structure, and electromagnetism bending moment drives the market of Electric Motor Wheel to apply will be very big.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present invention.
Fig. 2 is that three-phase independent-excited synchronous motor, electromagnetism torque-converting motor are from starting to stopped process rotating speed, torque relationship schematic diagram.
Fig. 3 is the control flow chart of the present invention.
Detailed description of the invention
Electric automobile electromagnetism bending moment drive system, including electromagnetism bending moment driving device, capacity cell, electronic controller, three phase bridge all control inverter circuit and rectified three-phase circuit, electromagnetism bending moment driving device includes three-phase independent-excited synchronous motor and electromagnetism torque-converting motor, the rotor of three-phase independent-excited synchronous motor and the internal rotor of electromagnetism torque-converting motor connect, the input of capacity cell and three phase bridge all control inverter circuit connects, the outfan of three phase bridge all control inverter circuit and the armature winding of three-phase independent-excited synchronous motor connect, three phase bridge all control inverter circuit is controlled by electronic controller, the internal rotor magnetic pole winding of electromagnetism torque-converting motor is connected by the Exciting Windings for Transverse Differential Protection of rectified three-phase circuit and three-phase independent-excited synchronous motor, the outer rotor of electromagnetism torque-converting motor and wheel hub connect.
Above-mentioned electric automobile electromagnetism bending moment drive system, also includes gravity electric generator and rectification circuit, and the winding of gravity electric generator and the input of rectification circuit connect, and the outfan of rectification circuit is connected on the connection line of capacity cell and rectified three-phase circuit.
Three-phase independent-excited synchronous motor is made up of stator, rotor, and all having electromagnetism winding, the winding on rotor on stator and rotor is Exciting Windings for Transverse Differential Protection, and power supply derives from the electromagnetism winding of electromagnetism torque-converting motor.Electromagnetism torque-converting motor applies three-phase permanent magnet electricity generator principle, with permanent magnetism magnetic pole is outer rotor, directly it is connected with wheel hub, with electromagnetism winding is internal rotor, the torque obtained on the more big outer rotor of electromagnetism torque-converting motor inner and outer rotors speed difference is also more big, otherwise the torque arrived of the more little outer rotor of speed difference is also more little.This characteristic is not had for permanent magnetic brushless or by planetary reduction gear In-wheel-motor driving.It is with three-phase independent-excited synchronous electric motor rotor Hard link.Electromagnetism torque-converting motor internal rotor winding DC voltage after the alternating voltage cutting external rotor magnetic poles magnetic field and produce is rectified flows to the Exciting Windings for Transverse Differential Protection of three-phase independent-excited synchronous motor simultaneously, so as to produce exciting current, strengthen the electromagnetic torque of three-phase independent-excited synchronous motor.
Fig. 2 be three-phase independent-excited synchronous motor, electromagnetism torque-converting motor from starting to stopped process rotating speed, torque relationship schematic diagram, the control process in each stage is described separately below:
Start-up course:
Before starting, O point synchronous motor, electromagnetism torque-converting motor are halted state.First applying three-phase alternating current (sine) to synchronous motor by frequency pressure ratio, frequency is started from scratch, and synchronous electric motor rotor is followed rotating excitation field and started to rotate.Because coaxial electrical magnetic variation torque motor internal rotor will produce the exciting current of synchronous motor, this exciting current increase controls again the raising of synchronous motor rotating speed.At this moment continuing to increase synchronous motor armature end voltage, until promoting electromagnetism torque-converting motor unofficial biography to start to rotate, completing start-up course A point.
Accelerator:
Electromagnetism torque-converting motor outer rotor starts rotation and just enters into accelerator A point.Owing to the input of outer rotor rotation weakens the exciting current of synchronous motor, now must improve armature voltage and rotating speed, it is ensured that the rotating speed of electromagnetism torque-converting motor outer rotor increases simultaneously.Accelerator B point is completed after arriving appointment rotating speed.
At the uniform velocity process:
At the uniform velocity process includes two aspects, and one is freely at the uniform velocity control；Two is cruising speed control.Being exactly Non-follow control in fact when carrying out and freely at the uniform velocity controlling, speed-raising improves voltage and improves frequency, and reduction of speed reduces frequency and reduces voltage；Cruising speed controls to be controlled by computer-implemented auto-speed, it is ensured that constant airspeed.This interval is made up of B and C section.
Braking procedure:
Braking procedure is from C point, and the length of braking time depends on control dynamics.Reducing the control frequency of synchronous motor when wanting brake operating, change simultaneously and control voltage (armature voltage), for ensureing to have certain braking moment can control the size of armature supply, its intensity can determine according to actual needs.Braking moment will be produced when electromagnetism torque-converting motor internal rotor rotating speed is lower than outer rotor rotating speed, force to make outer rotor reduce speed.Open mechanical hatching gate when internal rotor rotating speed is zero and force stop, i.e. D point.
Taxiing procedures:
Aforementioned four process is all electrokinetic process, and taxiing procedures is contrary, stops powering to synchronous motor.Electromagnetism bending moment is in taxiing procedures, and owing to no longer powering to synchronous motor, the outer rotor rotating speed of torque-converting motor will be greater than internal rotor rotating speed, forms generating state.And synchronous motor also becomes electromotor, electric energy is returned to set of cells by armature winding by it, it is achieved that regenerative electric power.
The electric automobile electromagnetism bending moment drive system that the present invention proposes have employed electromagnetism bending moment and drives, starting, accelerate, at the uniform velocity, torque and speed can be automatically adjusted in braking procedure, low speed torque is produced when starting, realizing high speed low torque at the uniform velocity time to run, during braking, electromagnetism bending moment drives and can produce braking moment and energy regenerating under the control of electronic controller.It can also reclaim automobile by gravity electric generator and produce the energy lost that pitches because of pavement roughness, improves the flying power of electric automobile.
Claims (2)
1. electric automobile electromagnetism bending moment drive system, it is characterized in that including electromagnetism bending moment driving device, capacity cell, electronic controller, three phase bridge all control inverter circuit and rectified three-phase circuit, electromagnetism bending moment driving device includes three-phase independent-excited synchronous motor and electromagnetism torque-converting motor, the rotor of three-phase independent-excited synchronous motor and the internal rotor of electromagnetism torque-converting motor connect, the input of capacity cell and three phase bridge all control inverter circuit connects, the outfan of three phase bridge all control inverter circuit and the armature winding of three-phase independent-excited synchronous motor connect, three phase bridge all control inverter circuit is controlled by electronic controller, the internal rotor magnetic pole winding of electromagnetism torque-converting motor is connected by the Exciting Windings for Transverse Differential Protection of rectified three-phase circuit and three-phase independent-excited synchronous motor, the outer rotor of electromagnetism torque-converting motor and wheel hub connect.
2. electric automobile electromagnetism bending moment drive system according to claim 1, characterized by further comprising gravity electric generator and rectification circuit, the winding of gravity electric generator and the input of rectification circuit connect, and the outfan of rectification circuit is connected on the connection line of capacity cell and rectified three-phase circuit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458268A (en) * | 2017-08-10 | 2017-12-12 | 杭州衡源汽车科技有限公司 | A kind of bending moment control method, device and electric automobile |
| CN107672457A (en) * | 2017-05-02 | 2018-02-09 | 张文祥 | Novel electric driven motor car |
| CN108859733A (en) * | 2018-08-12 | 2018-11-23 | 姜春辉 | A kind of electric car, hub motor and hub motor differential speed system |
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| CN108859733A (en) * | 2018-08-12 | 2018-11-23 | 姜春辉 | A kind of electric car, hub motor and hub motor differential speed system |
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| CN105730217B (en) | 2018-04-06 |
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