CN103231663B - 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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- CN103231663B CN103231663B CN201310174947.XA CN201310174947A CN103231663B CN 103231663 B CN103231663 B CN 103231663B CN 201310174947 A CN201310174947 A CN 201310174947A CN 103231663 B CN103231663 B CN 103231663B
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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
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention provides a low-cost driving system with three independent power supplies and for an electromobile. The system comprises the three independent power supplies, three switch tubes, a three-phase double-salient driving motor, a control system and the like. The system is characterized in that the three-phase double-salient driving motor is powered up by the three independent power supplies, a bridge arm is formed by connecting each independent power supply and a corresponding switch tube in series, three bridge arms are sequentially connected in an end-to-end mode in series in a triangle shape, and three connection points of the bridge arms are connected with a three-phase star-like winding of the double-salient driving motor respectively. The pole-arc coefficient of a stator core of the three-phase double-salient driving motor is 0.5, and the pole-arc coefficient of a rotor core of the three-phase double-salient driving motor is 0.333. The system is few in switching elements, low in cost, free of three-phase inverter direction connection and high in reliability and 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 under being operated in the mal-condition such as high temperature, high frequency, be part the weakest in drive system, the dead time is improper very easily there is straight-through fault.Because the number reducing switching valve effectively can improve the reliability of system, and reduce system cost, therefore 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 be made up of the motor body of position transduser, electronic power converter, permanent magnetism or electromagnetism Energizing 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 greatly, have good energy converting between mechanical characteristic, have good application prospect in battery-driven car industry.
In current existing technology, many patents of invention describe the three phase electric machine applying traditional three-phase bridge type converter.Some patents are wherein also had to improve traditional three-phase bridge type converter, the patent of invention of such as authorizing: ZL201010565874.3, for motor-driven three brachium pontis nine switching inverters of double cross stream, invented an a kind of available inverter to control separately two three phase alternating current motors simultaneously, number due to inverter breaker in middle pipe is 9, fewer with the inverter of six each and every one switching valves than each motor of tradition.
Novel double salient-pole electric machine has good application prospect in battery-driven car industry, and therefore domestic also have some achievements in research.The paper that 6th phase in 2008 " electric-engineering journal " publishes: the Design and implementation of electric vehicle Novel stator dual-feed double-convex-electrode electric motor drive system, devises a kind of electric excitation biconvex electrode electric machine, and utilize digital signal processor to achieve Electronic control; Application number is the Chinese invention patent of 200610097465.9: double salient-pole motor drive, and it figure 1 discloses the conventional three-phase bridge type converter circuit of a kind of three-phase double salient-pole electric machine, and this inverter is consistent with traditional three-phase inverter circuitry.Application number is the Chinese invention patent of 201110062872.7: four phase double salient-pole electric machines, discloses the four phase inverters that a kind of four phase double salient-pole electric machines are used, this inverter brachium pontis more 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, three-phase square wave is adopted to control when having invented a kind of normal operation, by the control method that equivalent sine wave drives during failure operation, the inverter that this control method adopts remains traditional three-phase bridge type converter.
The three-phase double salient-pole electric machine mentioned of above-mentioned document inverter used is all three-phase bridge type converter, and the commutation that this inverter adopts three upper switching valves and three lower switching valves to realize motor drives, and switching valve is many, and pressure drop is large, and loss is large; But also easily there is the straight-through phenomenon of upper and lower switching valve, very easily cause the damage of power-supply system.
Relative to prior art, low cost three independent current source drive system of electric motor vehicle disclosed by the invention, three independent current sources and three switching valves are adopted to power to double-salient-pole drive motor, binistor is few, circuit topological structure is novel, and gives the triple time conducting mode being applicable to controlling double salient-pole electric machine on this basis.
Not yet 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.
Summary of the invention
The present invention is in conjunction with the drived control mode of three-phase double salient-pole electric machine, propose a kind of low cost three independent current source drive system of electric motor vehicle, 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, switching valve loss is few, reliability is high.
The present invention is the cost and the loss that reduce traditional three-phase double salient-pole electric machine three-phase bridge type converter used, adopts following technical scheme:
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 double-salient-pole drive motor, position transduser, current sensor and control system, it is characterized in that: described three-phase double-salient-pole drive motor is by the first independent current source (U1), second independent current source (U2) and the 3rd independent current source (U3) three power supplys independently-powered, first independent current source (U1) and the first switching valve (Q1) are composed in series the first brachium pontis, second independent current source (U2) and second switch pipe (Q2) are composed in series the second brachium pontis, 3rd independent current source (U3) and the 3rd switching valve (Q3) are composed in series the 3rd brachium pontis, three brachium pontis press 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 the first body diode (D1) respectively, second body diode (D2) and the 3rd body diode (D3), described three-phase double-salient-pole drive motor is by three-phase windings, salient pole type stator core, salient pole type rotor iron core and shell composition, one end of A phase winding is connected with the point of connection of the first brachium pontis with the second brachium pontis, one end of B phase winding is connected with the point of connection of the second brachium pontis with the 3rd brachium pontis, one end of C phase winding is connected with the point of connection of the first brachium pontis with the 3rd 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 double-salient-pole drive motor both can use excitation winding excitation, also permanent magnet excitation can be used, position transduser is used for detection rotor position, and control system controls the first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) according to the position signal detected and opens or turn off, when the rising of A phase inductance, C phase inductance control the first switching valve (Q1) conducting when declining and lead to forward current to A phase winding, lead to negative current to C phase winding, A phase winding and C phase winding muck in, control second switch pipe (Q2) conducting when the rising of B phase inductance, A phase inductance decline and lead to forward current to B phase winding, lead to negative current to A phase winding, B phase winding and A phase winding muck in, control the 3rd switching valve (Q3) conducting when the rising of C phase inductance, B phase inductance decline and lead to forward current to C phase winding, lead to negative current to B phase winding, C phase winding and B phase winding muck in, current sensor for detecting electric current, and transmits signal to control system with current limliting and protective circuit, control system receiving sensor, throttle and speed-slackening signal, and after conditioning sensor, throttle and speed-slackening signal, sensor, throttle and speed-slackening signal are flowed to control unit, the drive singal of control unit output switch pipe after computing, this signal sends to the first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) respectively after driving isolation circuit, realizes the control to system.
Beneficial effect of the present invention is as follows:
1 adopts three independent current sources and three switching valves to power to double-salient-pole drive motor, and binistor is few, and cost is low, switching valve loss is few; Can not be there is the straight-through phenomenon of upper and lower switching valve in 2 systems, power supply will be caused to damage because of straight-through, have certain switching valve short trouble fault-tolerant ability; 3 battery-driven car three-phase drive motors adopt three-phase double salient-pole electric machine, and this machine can provide magnetic field by the permanent magnet on stator or excitation winding, and rotor structure is simple, and the non-brushing, the reliability that achieve motor are high, can run at a high speed and under mal-condition; 4 adopt triple time conducting mode to control the rotation of double salient-pole electric machine, effectively can play the characteristic of double salient-pole electric machine.
According to conservation of energy theorem, although native system adopts three independent current sources to power, the total volume of three power supplys is still the capacity of a conventional drive system power supply, can't increase power-supply system cost.
Accompanying drawing explanation
Fig. 1 is low cost three independent current source drive system of electric motor vehicle composition diagram 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 double-salient-pole 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 double-salient-pole 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 drawing of the present invention.
Fig. 6 is the connection diagram of traditional three phase electric machine and three-phase bridge type converter.
Detailed description of the invention
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 diagram of the present invention.This system comprises three independent current sources, three switching valves, three-phase double-salient-pole drive motor, position transduser, current sensor and control system, it is characterized in that: described three-phase double-salient-pole drive motor is by U1, U2 and U3 tri-power supplys are independently-powered, first independent current source (U1) and the first switching valve (Q1) are composed in series the first brachium pontis, second independent current source (U2) and second switch pipe (Q2) are composed in series the second brachium pontis, 3rd independent current source (U3) and the 3rd switching valve (Q3) are composed in series the 3rd brachium pontis, three brachium pontis press 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 the first body diode (D1) respectively, second body diode (D2) and the 3rd body diode (D3), described three-phase double-salient-pole 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 the first brachium pontis with the second brachium pontis, one end of B phase winding is connected with the point of connection of the second brachium pontis with the 3rd brachium pontis, one end of C phase winding is connected with the point of connection of the first brachium pontis with the 3rd brachium pontis, and the other end of three-phase windings is connected together and forms three-phase star winding.Position transduser is used for detection rotor position, and control system controls three switching valves according to the position signal detected and opens or turn off, and realizes the rotation of motor.Current sensor for detecting electric current, and transmits signal to control system with current limliting and protective circuit.Control system receiving sensor, throttle and speed-slackening signal, and after conditioning sensor, throttle and speed-slackening signal, sensor, throttle and speed-slackening signal are flowed to control unit, the drive singal of control unit output switch pipe after computing, this signal sends to the first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) respectively after driving isolation circuit, realizes 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 double-salient-pole 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 double-salient-pole 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 radial, 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 drawing 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, when traditional three phase electric machine coordinates with traditional three-phase bridge type converter, need to adopt up and down totally six switching valves, for Mitsubishi PM100RSE120 conventional at present, its price is about 1800 yuan.Therefore, save three switching valves, a large amount of system costs can be saved.
5 can find out that the principle of work of native system is by reference to the accompanying drawings, when electric angle is at (0 °, 120 °) between time, A phase inductance rises, C phase inductance declines, and now master cock pipe (Q1) conducting leads to forward current to A phase winding, leads to negative current to C phase winding, the reluctance torque of A phase winding and C phase winding cancels each other, A phase winding exports positive electromagnetic torque Taf, and C phase winding exports positive electromagnetic torque Tcf, A phase winding and C phase winding muck in; When electric angle is at (120 °, 240 °) between time, when the rising of B phase inductance, A phase inductance decline, now master cock pipe (Q2) conducting leads to forward current to B phase winding, lead to negative current to A phase winding, the reluctance torque of B phase winding and A phase winding cancels each other, and B phase winding exports positive electromagnetic torque Tbf, A phase winding exports positive electromagnetic torque Taf, B phase winding and A phase winding muck in; When electric angle is at (240 °, 360 °) between time, C phase inductance rises, B phase inductance declines, now master cock pipe (Q3) conducting leads to forward current to C phase winding, lead to negative current to B phase winding, the reluctance torque of C phase winding and B phase winding cancels each other, and C phase winding exports positive electromagnetic torque Tcf, B phase winding exports positive electromagnetic torque Tbf, C phase winding and B phase winding muck in.
Claims (1)
1. a low cost three independent current source drive system of electric motor vehicle, comprise three independent current sources, three switching valves, three-phase double-salient-pole drive motor, position transduser, current sensor and control system, it is characterized in that: described three-phase double-salient-pole drive motor is by the first independent current source (U1), second independent current source (U2) and the 3rd independent current source (U3) three power supplys independently-powered, first independent current source (U1) and the first switching valve (Q1) are composed in series the first brachium pontis, second independent current source (U2) and second switch pipe (Q2) are composed in series the second brachium pontis, 3rd independent current source (U3) and the 3rd switching valve (Q3) are composed in series the 3rd brachium pontis, three brachium pontis press 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 the first body diode (D1) respectively, second body diode (D2) and the 3rd body diode (D3), described three-phase double-salient-pole drive motor is by three-phase windings, salient pole type stator core, salient pole type rotor iron core and shell composition, one end of A phase winding is connected with the point of connection of the first brachium pontis with the second brachium pontis, one end of B phase winding is connected with the point of connection of the second brachium pontis with the 3rd brachium pontis, one end of C phase winding is connected with the point of connection of the first brachium pontis with the 3rd 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 double-salient-pole drive motor both can use excitation winding excitation, also permanent magnet excitation can be used, position transduser is used for detection rotor position, and control system controls the first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) according to the position signal detected and opens or turn off, when the rising of A phase inductance, C phase inductance control the first switching valve (Q1) conducting when declining and lead to forward current to A phase winding, lead to negative current to C phase winding, A phase winding and C phase winding muck in, control second switch pipe (Q2) conducting when the rising of B phase inductance, A phase inductance decline and lead to forward current to B phase winding, lead to negative current to A phase winding, B phase winding and A phase winding muck in, control the 3rd switching valve (Q3) conducting when the rising of C phase inductance, B phase inductance decline and lead to forward current to C phase winding, lead to negative current to B phase winding, C phase winding and B phase winding muck in, current sensor for detecting electric current, and transmits signal to control system with current limliting and protective circuit, control system receiving sensor, throttle and speed-slackening signal, and after conditioning sensor, throttle and speed-slackening signal, sensor, throttle and speed-slackening signal are flowed to control unit, the drive singal of control unit output switch pipe after computing, this signal sends to the first switching valve (Q1), second switch pipe (Q2) and the 3rd switching valve (Q3) respectively after driving isolation circuit, realizes 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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| CN103231663A CN103231663A (en) | 2013-08-07 |
| CN103231663B true CN103231663B (en) | 2015-03-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 driving control method, double salient pole reluctance motor driving control method and their controllers |
| JP2000050683A (en) * | 1998-07-28 | 2000-02-18 | Aisin Seiki Co Ltd | Method for controlling conducting pattern of 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 |
-
2013
- 2013-05-14 CN CN201310174947.XA patent/CN103231663B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 driving control method, double salient pole reluctance motor driving control method and their controllers |
| JP2000050683A (en) * | 1998-07-28 | 2000-02-18 | Aisin Seiki Co Ltd | Method for controlling conducting pattern of 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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Application publication date: 20130807 Assignee: Jun Tang Ling Ou, Shandong Automobile Manufacturing 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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