CN103231663A - Low-cost driving system with three independent power supplies and for electromobile - Google Patents
Low-cost driving system with three independent power supplies and for electromobile Download PDFInfo
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- CN103231663A CN103231663A CN201310174947XA CN201310174947A CN103231663A CN 103231663 A CN103231663 A CN 103231663A CN 201310174947X A CN201310174947X A CN 201310174947XA CN 201310174947 A CN201310174947 A CN 201310174947A CN 103231663 A CN103231663 A CN 103231663A
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Abstract
本发明提供一种低成本三独立电源电动车驱动系统。包括三个独立电源、三个开关管、三相双凸极驱动电机和控制系统等。其特征在于：所述三相双凸极驱动电机由三个独立电源供电，每个独立电源和一个开关管串联组成一个一桥臂，三个桥臂按三角形连接方式依次首尾串联，桥臂的三个连接点分别与双凸极电机的三相星形绕组相连。所述三相双凸极驱动电机定子铁心的极弧系数为0.5，转子铁心的极弧系数为0.333。本发明提供的系统开关器件少，成本低；不存在三相逆变器的直通现象，可靠性高，具有较高的实用性。
The invention provides a low-cost electric vehicle drive system with three independent power supplies. Including three independent power supplies, three switching tubes, three-phase double salient pole drive motor and control system, etc. It is characterized in that: the three-phase double-salient pole drive motor is powered by three independent power supplies, each independent power supply and a switch tube are connected in series to form a bridge arm, and the three bridge arms are connected in a triangular connection from end to end in sequence, and the bridge arms The three connection points are respectively connected with the three-phase star winding of the doubly salient motor. The pole arc coefficient of the stator core of the three-phase double salient pole driving motor is 0.5, and the pole arc coefficient of the rotor iron core is 0.333. The system provided by the invention has few switching devices and low cost; there is no direct phenomenon of the three-phase inverter, the reliability is high, and the utility model has high practicability.
Description
Technical field
The present invention relates to a kind of low-cost three independent current source drive system of electric motor vehicle, belong to battery-driven car actuation techniques field.
Background technology
Drive system of electric motor vehicle often adopts three-phase bridge type converter, and this inverter adopts 6 switching valves, and price is higher, there is higher conduction voltage drop, and be operated under the mal-conditions such as high temperature, high frequency, be part the weakest in the drive system, the straight-through fault of the improper very easily generation of The dead time.Because the number that reduces switching valve can effectively improve the reliability of system, and reduces system cost, so the drive system that a kind of switching valve is few, reliability is high is researched and developed in market in urgent need.
Double salient-pole electric machine is a kind of new-type motor of being made up of the motor body of position transduser, electronic power converter, permanent magnetism or electromagnetism excitation unit, controller and salient pole stator and rotor sructure.As a kind of novel variable reluctance motor, its magnetic resistance maxim and minimum value ratio are big, and energy converting between mechanical characteristic is preferably arranged, and have application promise in clinical practice in the battery-driven car industry.
In the present existing technology, many patents of invention have been narrated the three phase electric machine of using traditional three-phase bridge type converter.Wherein also there are some patents that traditional three-phase bridge type converter is improved, the patent of invention of Shou Quaning: ZL201010565874.3 for example, be used for double cross and flow motor-driven three brachium pontis, nine switching inverters, having invented an a kind of available inverter controls separately two three phase alternating current motors simultaneously, because the number of switching valve is 9 in the inverter, lack with six each and every one inverters of switching valve than each motor of tradition.
Novel double salient-pole electric machine has application promise in clinical practice in the battery-driven car industry, and therefore domestic also have some achievements in research.The paper that the 6th phase in 2008 " electric-engineering journal " publishes: the novel doubly-fed stator electricity biconvex pole motor Design of Driving System of electric vehicle and realization, designed a kind of electric excitation biconvex electrode electric machine, and utilized digital signal processor to realize electronic control; Application number is 200610097465.9 Chinese invention patent: double salient-pole motor drive, its accompanying drawing 1 disclose a kind of three-phase double salient-pole electric machine three-phase bridge type converter circuit commonly used, and this inverter is consistent with traditional three-phase inverter circuitry.Application number is 201110062872. 7 Chinese invention patent: four phase double salient-pole electric machines, four used phase inverters of a kind of four phase double salient-pole electric machines are disclosed, and this inverter is Duoed a brachium pontis than traditional three-phase inverter.The patent of invention of authorizing: ZL200810021000.4, a kind of fault tolerant control method of doubly salient permanent magnet motor, adopt three-phase square wave control when having invented a kind of normal operation, by the equivalent sine wave drive control method, the inverter that this control method adopts remains traditional three-phase bridge type converter during failure operation.
The used inverter of three-phase double salient-pole electric machine that above-mentioned document is mentioned is all three-phase bridge type converter, and this inverter adopts three commutations of going up switching valve and three following switching valves realization motors to drive, and switching valve is many, and pressure drop is big, and loss is big; But also have the straight-through phenomenon of switching valve up and down easily, very easily cause the damage of power-supply system.
With respect to prior art, low-cost three independent current source drive system of electric motor vehicle disclosed by the invention, adopt three independent current sources and three switching valves to give the power supply of biconvex utmost point drive motor, binistor is few, the circuit topological structure novelty, and provided the triple time conducting mode of suitable control double salient-pole electric machine on this basis.Low-cost three independent current source drive system of electric motor vehicle of the present invention have novelty, creativeness at three-phase inverter topological structure and double salient-pole electric machine driving controlling party mask, have advantages of high practicability aspect the battery-driven car driving.
Do not retrieve the low cost three independent current source drive system of electric motor vehicle that the present invention proposes at present both at home and abroad as yet.
Summary of the invention
The present invention is in conjunction with the driving mode of three-phase double salient-pole electric machine, a kind of low-cost three independent current source drive system of electric motor vehicle have been proposed, this system only uses three switching valves and three independent current sources can build the main power circuit of three-phase double salient-pole electric machine, and binistor is few, cost is low, the switching valve loss is few, reliability is high.
The present invention adopts following technical scheme for reducing cost and the loss of the used three-phase bridge type converter of traditional three-phase double salient-pole electric machine:
A kind of low-cost three independent current source drive system of electric motor vehicle, comprise three independent current sources, three switching valves, three-phase biconvex utmost point drive motor, position transduser, current sensor and control system etc., it is characterized in that: described three-phase biconvex utmost point drive motor is by first independent current source (U1), second independent current source (U2) and three power supplys of the 3rd independent current source (U3) are independently-powered, first independent current source (U1) and first switching valve (Q1) are composed in series first brachium pontis, second independent current source (U2) and second switch pipe (Q2) are composed in series second brachium pontis, the 3rd independent current source (U3) and the 3rd switching valve (Q3) are composed in series the 3rd brachium pontis, three brachium pontis are pressed the head and the tail series connection successively of triangle connection mode, first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) are parallel with first body diode (D1) respectively, second body diode (D2) and the 3rd body diode (D3); Described three-phase biconvex utmost point drive motor is by three phase windings, the salient pole type stator core, unshakable in one's determination and the shell composition of salient pole type rotor, one end of A phase winding is connected with the point of connection of first brachium pontis with second brachium pontis, one end of B phase winding is connected with the point of connection of second brachium pontis with the 3rd brachium pontis, one end of C phase winding is connected with the point of connection of the 3rd brachium pontis with first brachium pontis, the other end of three phase windings is connected together and forms three-phase star winding, the pole embrace of described stator core is 1/2, the pole embrace of rotor core is 1/3, three-phase biconvex utmost point drive motor both can use the excitation winding excitation, also can use permanent magnet excitation; Position transduser is for detection of rotor-position, and control system is controlled first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) according to detected position signal and opened or turn-off; Give the A phase winding logical forward current when the A phase inductance rises, control first switching valve (Q1) conducting when the C phase inductance descends, give the C phase winding logical negative current, A phase winding and C phase winding muck in; When the B phase inductance rises, the conducting of control second switch pipe (Q2) gave the B phase winding logical forward current when the A phase inductance descended, and gave the A phase winding logical negative current, B phase winding and A phase winding muck in; Give the C phase winding logical forward current when the C phase inductance rises, control the 3rd switching valve (Q3) conducting when the B phase inductance descends, give the B phase winding logical negative current, C phase winding and B phase winding muck in; Current sensor is for detection of electric current, and transmits signal to control system with current limliting and protective circuit; Control system receiving sensor, throttle and speed-slackening signal, and behind this signal of conditioning, transmit signal to control unit, control unit is through the driving signal of output switching valve after the computing, this signal sends to first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) respectively behind the buffer circuit of overdriving, realize the control to system.
Beneficial effect of the present invention is as follows:
1 adopts three independent current sources and three switching valves to give the power supply of biconvex utmost point drive motor, and binistor is few, and cost is low, the switching valve loss is few; Can there be the straight-through phenomenon of upper and lower switching valve in 2 systems, can not cause power supply to damage because of leading directly to, and have certain switching valve short trouble fault-tolerant ability; 3 battery-driven car three-phase drive motors adopt the three-phase double salient-pole electric machine, and this machine can provide magnetic field by the permanent magnet on the stator or excitation winding, and rotor structure is simple, has realized non-brushing, the reliability height of motor, can move at a high speed and under the mal-condition; 4 adopt the rotation of triple time conducting mode control double salient-pole electric machine, can effectively bring into play the characteristic of double salient-pole electric machine.
According to conservation of energy theorem, though native system adopts three independent current source power supplies, the total volume of three power supplys still is the capacity of a power supply of conventional drive system, can't increase the power-supply system cost.
Description of drawings
Fig. 1 is low-cost three independent current source drive system of electric motor vehicle composition diagrams of the present invention.
Fig. 2 is the three-phase electricity excitation biconvex electrode drive motor structural representation of low-cost three independent current source drive system of electric motor vehicle of the present invention.Wherein 1, excitation winding; 2, armature loop; 3, stator core; 4, rotor core.
Fig. 3 is the three-phase tangential permanent magnet biconvex utmost point drive motor structural representation of low-cost three independent current source drive system of electric motor vehicle of the present invention.Wherein 1, permanent magnet; 2, armature loop; 3, stator core; 4, rotor core.
Fig. 4 is the three-phase radial permanent magnet biconvex utmost point drive motor structural representation of low-cost three independent current source drive system of electric motor vehicle of the present invention.Wherein 1, armature loop; 2, stator core; 3, motor housing; 4, permanent magnet; 5, rotor core.
Fig. 5 is low-cost three independent current source drive system of electric motor vehicle triple time conducting control principle figure of the present invention.
Fig. 6 is the connection diagram of traditional three phase electric machine and three-phase bridge type converter.
The specific embodiment
Below in conjunction with accompanying drawing the invention is described in further details.
Fig. 1 is low-cost three independent current source drive system of electric motor vehicle composition diagrams of the present invention.This system comprises three independent current sources, three switching valves, three-phase biconvex utmost point drive motor, position transduser, current sensor and control system etc., it is characterized in that: described three-phase biconvex utmost point drive motor is by U1, three power supplys of U2 and U3 are independently-powered, first independent current source (U1) and first switching valve (Q1) are composed in series first brachium pontis, second independent current source (U2) and second switch pipe (Q2) are composed in series second brachium pontis, the 3rd independent current source (U3) and the 3rd switching valve (Q3) are composed in series the 3rd brachium pontis, three brachium pontis are pressed the head and the tail series connection successively of triangle connection mode, first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) are parallel with first body diode (D1) respectively, second body diode (D2) and the 3rd body diode (D3); Described three-phase biconvex utmost point drive motor is made up of three phase windings, salient pole type stator core, salient pole type rotor iron core and shell, one end of A phase winding is connected with the point of connection of first brachium pontis with second brachium pontis, one end of B phase winding is connected with the point of connection of second brachium pontis with the 3rd brachium pontis, one end of C phase winding is connected with the point of connection of the 3rd brachium pontis with first brachium pontis, and the other end of three phase windings is connected together and forms three-phase star winding.Position transduser is for detection of rotor-position, and control system is opened or turn-offed according to three switching valves of detected position signal control, realizes the rotation of motor.Current sensor is for detection of electric current, and transmits signal to control system with current limliting and protective circuit.Control system receiving sensor, throttle and speed-slackening signal, and behind this signal of conditioning, transmit signal to control unit, control unit is through the driving signal of output switching valve after the computing, this signal sends to first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) respectively behind the buffer circuit of overdriving, realize the control to system.
Fig. 2 is the three-phase electricity excitation biconvex electrode drive motor structural representation of low-cost three independent current source drive system of electric motor vehicle of the present invention, and the pole embrace of this machine stator iron core is 1/2, and the pole embrace of rotor core is 1/3.
Fig. 3 is the three-phase tangential permanent magnet biconvex utmost point drive motor structural representation of low-cost three independent current source drive system of electric motor vehicle of the present invention, the magnetizing direction of this machine permanent magnet is tangential, the pole embrace of its stator core is 1/2, and the pole embrace of rotor core is 1/3.
Fig. 4 is the three-phase radial permanent magnet biconvex utmost point drive motor structural representation of low-cost three independent current source drive system of electric motor vehicle of the present invention, the magnetizing direction of this machine permanent magnet is for radially, the pole embrace of its stator core is 1/2, and the pole embrace of rotor core is 1/3.
In like manner, native system also can adopt the double salient-pole electric machine of permanent magnetism and electric excitation mixed excitation as drive motor.
Fig. 5 is low-cost three independent current source drive system of electric motor vehicle triple time conducting control principle figure of the present invention.
Fig. 6 is the connection diagram of traditional three phase electric machine and three-phase bridge type converter.
As can be seen from Figure 6, traditional three phase electric machine needs to adopt up and down totally six switching valves when traditional three-phase bridge type converter cooperates, and is example with the PM100RSE120 of Mitsubishi commonly used at present, and its price is about 1800 yuan.Therefore, save three switching valves, can save a large amount of system costs.
By reference to the accompanying drawings 5 as can be seen the principle of work of native system be, when electric angle at (0 °, 120 °) between the time, the A phase inductance rises, the C phase inductance descends, and master cock pipe (Q1) conducting this moment gives the A phase winding logical forward current, gives the C phase winding logical negative current, the reluctance torque of A phase winding and C phase winding is cancelled each other, the electromagnetic torque Taf that the output of A phase winding is positive, the electromagnetic torque Tcf that the output of C phase winding is positive, A phase winding and C phase winding muck in; When electric angle at (120 °, 240 °) between the time, when the B phase inductance rises, the A phase inductance descends, master cock pipe (Q2) conducting this moment gives the B phase winding logical forward current, give the A phase winding logical negative current, the reluctance torque of B phase winding and A phase winding is cancelled each other, the electromagnetic torque Tbf that the output of B phase winding is positive, the electromagnetic torque Taf that the output of A phase winding is positive, B phase winding and A phase winding muck in; When electric angle at (240 °, 360 °) between the time, the C phase inductance rises, the B phase inductance descends, master cock pipe (Q3) conducting this moment gives the C phase winding logical forward current, give the B phase winding logical negative current, the reluctance torque of C phase winding and B phase winding is cancelled each other, the electromagnetic torque Tcf that the output of C phase winding is positive, the electromagnetic torque Tbf that the output of B phase winding is positive, C phase winding and B phase winding muck in.
Claims (1)
1. low cost three independent current source drive system of electric motor vehicle, comprise three independent current sources, three switching valves, three-phase biconvex utmost point drive motor, position transduser, current sensor and control system etc., it is characterized in that: described three-phase biconvex utmost point drive motor is by first independent current source (U1), second independent current source (U2) and three power supplys of the 3rd independent current source (U3) are independently-powered, first independent current source (U1) and first switching valve (Q1) are composed in series first brachium pontis, second independent current source (U2) and second switch pipe (Q2) are composed in series second brachium pontis, the 3rd independent current source (U3) and the 3rd switching valve (Q3) are composed in series the 3rd brachium pontis, three brachium pontis are pressed the head and the tail series connection successively of triangle connection mode, first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) are parallel with first body diode (D1) respectively, second body diode (D2) and the 3rd body diode (D3); Described three-phase biconvex utmost point drive motor is by three phase windings, the salient pole type stator core, unshakable in one's determination and the shell composition of salient pole type rotor, one end of A phase winding is connected with the point of connection of first brachium pontis with second brachium pontis, one end of B phase winding is connected with the point of connection of second brachium pontis with the 3rd brachium pontis, one end of C phase winding is connected with the point of connection of the 3rd brachium pontis with first brachium pontis, the other end of three phase windings is connected together and forms three-phase star winding, the pole embrace of described stator core is 1/2, the pole embrace of rotor core is 1/3, three-phase biconvex utmost point drive motor both can use the excitation winding excitation, also can use permanent magnet excitation; Position transduser is for detection of rotor-position, and control system is controlled first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) according to detected position signal and opened or turn-off; Give the A phase winding logical forward current when the A phase inductance rises, control first switching valve (Q1) conducting when the C phase inductance descends, give the C phase winding logical negative current, A phase winding and C phase winding muck in; When the B phase inductance rises, the conducting of control second switch pipe (Q2) gave the B phase winding logical forward current when the A phase inductance descended, and gave the A phase winding logical negative current, B phase winding and A phase winding muck in; Give the C phase winding logical forward current when the C phase inductance rises, control the 3rd switching valve (Q3) conducting when the B phase inductance descends, give the B phase winding logical negative current, C phase winding and B phase winding muck in; Current sensor is for detection of electric current, and transmits signal to control system with current limliting and protective circuit; Control system receiving sensor, throttle and speed-slackening signal, and behind this signal of conditioning, transmit signal to control unit, control unit is through the driving signal of output switching valve after the computing, this signal sends to first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) respectively behind the buffer circuit of overdriving, realize the control to system.
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| CN201310174947.XA CN103231663B (en) | 2013-05-14 | 2013-05-14 | Low-cost driving system with three independent power supplies and for electromobile |
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| CN201310174947.XA CN103231663B (en) | 2013-05-14 | 2013-05-14 | Low-cost driving system with three independent power supplies and for electromobile |
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| CN103231663B CN103231663B (en) | 2015-03-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092343A (en) * | 2014-07-01 | 2014-10-08 | 李佳军 | DC motor with rotary magnetic field |
| CN118677332A (en) * | 2024-08-22 | 2024-09-20 | 河北科技大学 | Double-permanent magnet synchronous motor reconstruction fault-tolerant method based on nine-switch converter |
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| US5455473A (en) * | 1992-05-11 | 1995-10-03 | Electric Power Research Institute, Inc. | Field weakening for a doubly salient motor with stator permanent magnets |
| JPH09252588A (en) * | 1996-03-17 | 1997-09-22 | Daikin Ind Ltd | Compressor drive control method, double salient pole reluctance motor drive control method and these devices |
| JP2000050683A (en) * | 1998-07-28 | 2000-02-18 | Aisin Seiki Co Ltd | Energization control method for three-phase double salient pole reluctance motor |
| CN1960157A (en) * | 2006-11-10 | 2007-05-09 | 南京航空航天大学 | Motor driver of biconvex poles |
| CN102158163A (en) * | 2011-03-16 | 2011-08-17 | 南京航空航天大学 | Controllable rectification power generation system of permanent magnet doubly salient motor |
| CN102223129A (en) * | 2011-06-16 | 2011-10-19 | 南京航空航天大学 | Controllable half-wave rectifier generating system for double-salient electro-magnetic motor |
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2013
- 2013-05-14 CN CN201310174947.XA patent/CN103231663B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| US5455473A (en) * | 1992-05-11 | 1995-10-03 | Electric Power Research Institute, Inc. | Field weakening for a doubly salient motor with stator permanent magnets |
| JPH09252588A (en) * | 1996-03-17 | 1997-09-22 | Daikin Ind Ltd | Compressor drive control method, double salient pole reluctance motor drive control method and these devices |
| JP2000050683A (en) * | 1998-07-28 | 2000-02-18 | Aisin Seiki Co Ltd | Energization control method for three-phase double salient pole reluctance motor |
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| CN104092343A (en) * | 2014-07-01 | 2014-10-08 | 李佳军 | DC motor with rotary magnetic field |
| CN118677332A (en) * | 2024-08-22 | 2024-09-20 | 河北科技大学 | Double-permanent magnet synchronous motor reconstruction fault-tolerant method based on nine-switch converter |
| CN118677332B (en) * | 2024-08-22 | 2024-11-08 | 河北科技大学 | Reconfiguration fault-tolerant method for dual permanent magnet synchronous motor based on nine-switch converter |
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Application publication date: 20130807 Assignee: SHANDONG TANGJUN OULING AUTOMOBILE MANUFACTURE Co.,Ltd. Assignor: Shandong University of Technology Contract record no.: 2017370000025 Denomination of invention: Low-cost driving system with three independent power supplies and for electromobile Granted publication date: 20150325 License type: Exclusive License Record date: 20170401 |
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Granted publication date: 20150325 |