CN1593981A - Multi-stage highly effective variable-frequency control electric automobile driving device and control method thereof - Google Patents
Multi-stage highly effective variable-frequency control electric automobile driving device and control method thereof Download PDFInfo
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- CN1593981A CN1593981A CNA2004100134040A CN200410013404A CN1593981A CN 1593981 A CN1593981 A CN 1593981A CN A2004100134040 A CNA2004100134040 A CN A2004100134040A CN 200410013404 A CN200410013404 A CN 200410013404A CN 1593981 A CN1593981 A CN 1593981A
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Abstract
The invention relates to a kind of speed governing electric automobile driving device with multistage high-efficient frequency-changer and its controlling method , it is composed of alternating current frequency-changer motor team and controlling system . Its characteristic is that the alternating current frequency-changer motor team consists of two alternating current frequency-changer motor that contacts each other , the mechanical characteristic of the two motors is different : for motor A , its rotational speed of basic frequency is low , its low speed torque is big while its highest rotational speed is low ; for motor B , its rotational speed of basic frequency is high , its low speed torque is small while its highest rotational speed is high . Because the invention adopts double electrical machinery to drive , it can make the electric automobile realize the rational matching drive of the two electrical machineries according to the power demands in vehicle's traveling course , expand the working range of the driving system of electric automobile , and optimize the working efficiency of the driving system .
Description
Technical field
The invention belongs to the frequency-conversion and speed-regulation motor drive system, particularly a kind of multi-stage, efficient electrical variable frequency adjustable speed automotive proplsion and control method.
Background technology
Because electronlmobil (comprises pure electric automobile, hybrid vehicle and fuel cell powered vehicle) when moving, drive motor load variations scope is bigger, and the output torque of drive motor and range of speed are limited, need select for use more high-performance drive motor to satisfy its power demand, so the phenomenon of low load with strong power can occur, can't take into account the dynamic property and the economy of drive motor, and the efficient of driving motor is to the performance of car load, as continual mileage, the fuel consumption rate important influence, so widen Drive for EV electrical motor operating range, improving its work efficiency has vital function to the research and development of electronlmobil.
Summary of the invention
The purpose of this invention is to provide a kind of can be according to the size of electronlmobil load variations, and change the multi-stage, efficient electrical variable frequency adjustable speed automotive proplsion and the control method of Drive for EV output power of motor, to overcome above-mentioned deficiency.
To achieve these goals, the present invention is made up of ac variable frequency speed regulation motor unit and control system, wherein control system comprises electronic accelerator pedal, Electric Vehicle's Alternating frequency-conversion and speed-regulation motor control unit and lead, wherein the output of electronic accelerator pedal links to each other with the data line of control unit, the output control Electric Vehicle's Alternating frequency-conversion and speed-regulation motor group work of control unit, be characterized in: the ac variable frequency speed regulation motor unit is made of two ac variable frequency speed regulation motor in series;
The mechanical specialities difference of above-mentioned two ac variable frequency speed regulation electrical motors, wherein the fundamental frequency rotating speed of electrical motor A is lower, and low speed torque is big and maximum speed of revolution is lower, and electrical motor B fundamental frequency rotating speed is higher, and low speed torque is less and maximum speed of revolution is higher;
The power supply of above-mentioned two ac variable frequency speed regulation electrical motors links to each other with the control output line of two independent controls respectively, two independent controls are alternating current output with the direct current input inversion of direct supply respectively, offer two ac variable frequency speed regulation electrical motors, the signal input end of independent control is connected with the control output line of Control of Electric Vehicles unit respectively.
The present invention also provides multi-stage, efficient electrical variable frequency adjustable speed automobile drive control method,
First step: in the electric automobile during traveling process, the pilot control electronic accelerator pedal, car load drive system control unit is converted to the vehicle needs dtc signal with the displacement signal of electronic accelerator pedal, and gather this moment motor speed signal, car load drive system control unit is according to the size decision double motor mode of operation of torque and motor speed;
Second step: if vehicle operation is in the low-speed high-torque district, and power demand is little, then selects for use electrical motor A to work independently; If vehicle operation is in high speed low torque district, and power demand is little, then selects for use electrical motor B to work independently; If vehicle operation in high-power desired region, then adopts the double motor collaborative work;
Third step: when adopting the double motor cooperative work mode, the car load drive system is according to the motor efficiency distribution character data of typing in advance, carrying out torque distribution selects, under the condition of certain double-motor output torque, select the best effort torque of two motors respectively for use, carry out the torque optimized distribution.
Because the present invention adopts double-motor to drive, and can realize electronlmobil according to the power demand in the vehicle ' process, realize the reasonably combined driving of double-motor, enlarge the drive system of electric automobile operating range, optimize the drive system work efficiency.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is electrical motor A mechanical characteristic figure.
Fig. 3 is electrical motor B mechanical characteristic figure.
Fig. 4 is electrical motor A and electrical motor B mechanical characteristic comparison diagram.
Fig. 5 is a double motor mechanical specialities superposition plot.
Fig. 6 is electrical motor A and electrical motor B work efficiency scatter chart.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described, but this embodiment should not be construed as limitation of the present invention.
The present invention (Fig. 1) comprises ac variable frequency speed regulation electrical motor (electrical motor A, electrical motor B), two ac variable frequency speed regulation motor controllers, electronic accelerator pedal, drive system of electric automobile control unit and leads of two serial connections and power supply separately.Electrical motor A requires its mechanical specialities different with electrical motor B, and the fundamental frequency rotating speed of electrical motor A is lower, and low speed torque is big and maximum speed of revolution is lower, and its mechanical characteristic example as shown in Figure 2; Electrical motor B fundamental frequency rotating speed is higher, and low speed torque is less and maximum speed of revolution is higher, and its mechanical characteristic example as shown in Figure 3.Two above-mentioned two electrical motors that mechanical specialities is different of the corresponding respectively control of ac variable frequency speed regulation motor controller are realized Variable Frequency and Speed Adjusting of Electromotor control and electrical motor acquisition of signal.Electronic accelerator pedal changes pedal stroke into voltage signal output, realizes the control of chaufeur to drive system.The drive system of electric automobile control unit is realized the integral body control to multi-stage, efficient electrical variable frequency adjustable speed automobile driving system, to acquired signal analyze, calculating and controlled reset.
The present invention has adopted two motors, and system can carry out three kinds of different coupling drive patterns according to the rotating speed and the level of torque of load, is respectively: electrical motor A works independently, electrical motor B works independently, electrical motor A and electrical motor B collaborative work.Work in the low-speed high-torque operating mode at electronlmobil,, then select for use the bigger electrical motor A of low speed torque to work independently as vehicle start, low speed climbing etc., thus phenomenons such as overheated, the decrease in efficiency of avoiding that electrical motor causes owing to low speed torque is not enough.Work in torque operating mode at high speed at electronlmobil,, then select for use the higher electrical motor B of fundamental frequency rotating speed to work independently, thereby avoid the phenomenon of the rotating speed deficiency of electrical motor as the high-performance cruise motoring condition.As shown in Figure 4, as can be seen from Figure, at the electrical motor output speed during, optionally work independently torque abundance when guaranteeing low speed with electrical motor A less than two cooresponding rotating speeds of empirical curve intersection point; At the electrical motor output speed during, optionally work independently, with the needs that guarantee to run at high speed with electrical motor B greater than two cooresponding rotating speeds of empirical curve intersection point; Work in high-power output operating mode at electronlmobil, as heavy duty travel, starting-up to speed, uphill starting, high-speed passing etc., then select electrical motor A and electrical motor B collaborative work for use, to satisfy the power demand of this operating mode electronlmobil, the synthetic mechanical characteristic of double motor torque as shown in Figure 5.Under the different operating mode of electronlmobil, can select suitable drive motor collocation like this, make driving motor no matter under high speed low torque, low-speed high-torque or high-power output state, guarantee normal operation all the time, as shown in Figure 5, the reasonably combined expansion that can realize the electrical motor operating range of drive motor.
Two motors of the present invention, its work efficiency distributes and has nothing in common with each other, and it is characterized by identical electrical motor operation point (rotating speed, torque identical), electrical motor work efficiency difference; Identical electrical motor work efficiency, respective motor operation point difference; Each electrical motor has its efficacious workaround respectively, and the electrical motor work efficiency is along with descending away from this work area, as shown in Figure 6.Under identical rotating speed, two motors are all to there being efficient torque.Because the two motors serial connection, and two motors is powered respectively, control respectively, and rotating speed was identical when then two motors moved jointly, and its output torque is the two torque sum, and the double-motor drive system total efficiency is the weighted average of the efficient of two motors.Can adjust the output torque of two motors by motor controller respectively, guarantee that sum of the two reaches under the condition of vehicle ' demand, the operation torque that makes two motors near or reach efficient torque, thereby realize the total output efficiency optimization of double motor.
Principle of work of the present invention is: in the electric automobile during traveling process, the pilot control electronic accelerator pedal, the displacement signal that car load drive system control unit will speed up pedal is converted to the vehicle needs dtc signal, and gather this moment motor speed signal, car load drive system control unit is according to the size decision double motor mode of operation of torque and motor speed, if vehicle operation is in the low-speed high-torque district, and power demand is little, then selects for use electrical motor A to work independently; If vehicle operation is in the district of torque at high speed, and power demand is little, then selects for use electrical motor B to work independently; If vehicle operation is in high-power desired region, then adopt the double motor collaborative work, under this pattern, the car load drive system is according to the motor efficiency distribution character data of typing in advance, carrying out torque distribution selects, under the condition of certain double-motor output torque, select the best effort torque of two motors respectively for use, carry out the torque optimized distribution.Drive system is after having adopted specific Duty of Electric Motors; control signal is offered two ac variable frequency speed regulation motor controllers respectively; motor controller is realized shutdown, operation and the variable frequency regulating speed control of ac variable frequency speed regulation electrical motor according to this control signal; and gather signals such as motor speed, temperature, output torque; feed back to car load drive system control unit, carry out next round control.
The content that is not described in detail in this specification sheets belongs to this area professional and technical personnel's known prior art.
Claims (4)
1, a kind of multi-stage, efficient electrical variable frequency adjustable speed automotive proplsion, form by ac variable frequency speed regulation motor unit and control system, wherein control system comprises electronic accelerator pedal, Electric Vehicle's Alternating frequency-conversion and speed-regulation motor control unit and lead, wherein the output of electronic accelerator pedal links to each other with the data line of control unit, the output control Electric Vehicle's Alternating frequency-conversion and speed-regulation motor group work of control unit, it is characterized in that: the ac variable frequency speed regulation motor unit is made of two ac variable frequency speed regulation motor in series.
2, multi-stage, efficient electrical variable frequency adjustable speed automotive proplsion as claimed in claim 1, it is characterized in that: the mechanical specialities difference of two ac variable frequency speed regulation electrical motors, wherein the fundamental frequency rotating speed of electrical motor A is lower, low speed torque is big and maximum speed of revolution is lower, electrical motor B fundamental frequency rotating speed is higher, and low speed torque is less and maximum speed of revolution is higher.
3, multi-stage, efficient electrical variable frequency adjustable speed automotive proplsion as claimed in claim 1, it is characterized in that: the power supply of two ac variable frequency speed regulation electrical motors links to each other with the control output line of two independent controls respectively, two independent controls are alternating current output with the direct current input inversion of direct supply respectively, offer two ac variable frequency speed regulation electrical motors, the signal input end of independent control is connected with the control output line of Control of Electric Vehicles unit respectively.
4, a kind of multi-stage, efficient electrical variable frequency adjustable speed automobile drive controlling method, comprise ac variable frequency speed regulation electrical motor (electrical motor A, electrical motor B), two ac variable frequency speed regulation motor controllers, electronic accelerator pedal, drive system of electric automobile control unit and leads of two serial connections and power supply separately, its controlled step is:
First step: in the electric automobile during traveling process, the pilot control electronic accelerator pedal, car load drive system control unit is converted to the vehicle needs dtc signal with the displacement signal of electronic accelerator pedal, and gather this moment motor speed signal, car load drive system control unit is according to the size decision double motor mode of operation of torque and motor speed;
Second step: if vehicle operation is in the low-speed high-torque district, and power demand is little, then selects for use electrical motor A to work independently; If vehicle operation is in high speed low torque district, and power demand is little, then selects for use electrical motor B to work independently; If vehicle operation in high-power desired region, then adopts the double motor collaborative work;
Third step: adopting under the double motor cooperative work mode, the car load drive system is according to the motor efficiency distribution character data of typing in advance, carrying out torque distribution selects, under the condition of certain double-motor output torque, select the best effort torque of two motors respectively for use, carry out the torque optimized distribution.
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| CNB2004100134040A CN1297420C (en) | 2004-06-30 | 2004-06-30 | Multi-stage highly effective variable-frequency control electric automobile driving device and control method thereof |
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| CNB2004100134040A CN1297420C (en) | 2004-06-30 | 2004-06-30 | Multi-stage highly effective variable-frequency control electric automobile driving device and control method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734174A (en) * | 2008-11-20 | 2010-06-16 | 陈成勋 | Pole-variable and frequency-variable speed regulation electric car drive device |
| CN102005992A (en) * | 2010-11-01 | 2011-04-06 | 刘泽法 | Double-motor balanced exchange drive for electric vehicle |
| CN102294963A (en) * | 2011-06-09 | 2011-12-28 | 上海中科深江电动车辆有限公司 | Double-motor double-energy compound driving system |
| CN1927609B (en) * | 2006-10-11 | 2013-01-09 | 芦晓民 | Motor driving system with speed adaptation capability and controlling method thereof |
| CN103273857A (en) * | 2013-03-20 | 2013-09-04 | 北京工业大学 | Efficiency optimizing method of master-slave type multi-motor driving system |
| CN105539201A (en) * | 2016-01-27 | 2016-05-04 | 北京理工大学 | Multi-motor parallel drive system of electric car |
| CN106515510A (en) * | 2016-11-30 | 2017-03-22 | 桂林师范高等专科学校 | Electric automobile electric drive control system |
| CN106627248A (en) * | 2016-11-30 | 2017-05-10 | 桂林师范高等专科学校 | Electric driving and controlling system of electric vehicle |
| CN107257188A (en) * | 2017-07-28 | 2017-10-17 | 福州大学 | A kind of combining structure motor and its drive control method |
| CN107284212A (en) * | 2016-04-13 | 2017-10-24 | 江苏陆地方舟新能源电动汽车有限公司 | A kind of power assembly of electric automobile and its control method |
| CN107380010A (en) * | 2017-07-28 | 2017-11-24 | 福州大学 | Vehicle electric system and its drive control method based on combination motor driving |
| CN108312893A (en) * | 2017-01-17 | 2018-07-24 | 深圳市航盛电子股份有限公司 | A kind of bi-motor coordinated control system and method |
| CN110014827A (en) * | 2018-01-09 | 2019-07-16 | 郑州宇通客车股份有限公司 | A kind of heavy type mine car pure electric vehicle dynamical system and mine car |
| CN114425953A (en) * | 2022-02-23 | 2022-05-03 | 江苏联成开拓集团有限公司 | New energy automobile auxiliary power control system and control method thereof |
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| DE4133013C2 (en) * | 1991-10-04 | 1995-11-30 | Mannesmann Ag | Non-track-bound vehicle with an electrodynamic converter |
| DE4133622A1 (en) * | 1991-10-10 | 1993-04-22 | Mannesmann Ag | SPEED DETECTION IN A DRIVE ARRANGEMENT FOR A MOTOR VEHICLE |
| US5568023A (en) * | 1994-05-18 | 1996-10-22 | Grayer; William | Electric power train control |
| JPH08133086A (en) * | 1994-11-07 | 1996-05-28 | Takuma Seiko:Kk | Motor-driven travel car |
| JP2000142157A (en) * | 1998-11-16 | 2000-05-23 | Honda Motor Co Ltd | Motor-driven driving force assist vehicle |
| CN1254661A (en) * | 1999-11-19 | 2000-05-31 | 王锡安 | Microprocessor controlled electric vehicle with AC frequency-changing speed control |
| CN2456956Y (en) * | 2000-12-06 | 2001-10-31 | 范汉强 | Controller of trolley running |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1927609B (en) * | 2006-10-11 | 2013-01-09 | 芦晓民 | Motor driving system with speed adaptation capability and controlling method thereof |
| CN101734174B (en) * | 2008-11-20 | 2016-04-06 | 陈成勋 | Pole-variable and frequency-variable speed regulation electric car drive device |
| CN101734174A (en) * | 2008-11-20 | 2010-06-16 | 陈成勋 | Pole-variable and frequency-variable speed regulation electric car drive device |
| CN102005992A (en) * | 2010-11-01 | 2011-04-06 | 刘泽法 | Double-motor balanced exchange drive for electric vehicle |
| CN102294963A (en) * | 2011-06-09 | 2011-12-28 | 上海中科深江电动车辆有限公司 | Double-motor double-energy compound driving system |
| CN103273857A (en) * | 2013-03-20 | 2013-09-04 | 北京工业大学 | Efficiency optimizing method of master-slave type multi-motor driving system |
| CN103273857B (en) * | 2013-03-20 | 2015-03-25 | 北京工业大学 | Efficiency optimizing method of master-slave type multi-motor driving system |
| CN105539201A (en) * | 2016-01-27 | 2016-05-04 | 北京理工大学 | Multi-motor parallel drive system of electric car |
| CN107284212A (en) * | 2016-04-13 | 2017-10-24 | 江苏陆地方舟新能源电动汽车有限公司 | A kind of power assembly of electric automobile and its control method |
| CN106515510A (en) * | 2016-11-30 | 2017-03-22 | 桂林师范高等专科学校 | Electric automobile electric drive control system |
| CN106627248A (en) * | 2016-11-30 | 2017-05-10 | 桂林师范高等专科学校 | Electric driving and controlling system of electric vehicle |
| CN108312893A (en) * | 2017-01-17 | 2018-07-24 | 深圳市航盛电子股份有限公司 | A kind of bi-motor coordinated control system and method |
| CN108312893B (en) * | 2017-01-17 | 2020-12-04 | 深圳市航盛电子股份有限公司 | Double-motor coordination control system and method |
| CN107257188A (en) * | 2017-07-28 | 2017-10-17 | 福州大学 | A kind of combining structure motor and its drive control method |
| CN107380010A (en) * | 2017-07-28 | 2017-11-24 | 福州大学 | Vehicle electric system and its drive control method based on combination motor driving |
| CN107380010B (en) * | 2017-07-28 | 2023-04-18 | 福州大学 | Electric automobile system based on combined motor drive and drive control method thereof |
| CN107257188B (en) * | 2017-07-28 | 2023-06-09 | 福州大学 | Combined structure motor and driving control method thereof |
| CN110014827A (en) * | 2018-01-09 | 2019-07-16 | 郑州宇通客车股份有限公司 | A kind of heavy type mine car pure electric vehicle dynamical system and mine car |
| CN114425953A (en) * | 2022-02-23 | 2022-05-03 | 江苏联成开拓集团有限公司 | New energy automobile auxiliary power control system and control method thereof |
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