CN204046471U - Winding series parallel circuit structure in attached brushless DC motor of electric vehicle control system - Google Patents
Winding series parallel circuit structure in attached brushless DC motor of electric vehicle control system Download PDFInfo
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- CN204046471U CN204046471U CN201420500993.4U CN201420500993U CN204046471U CN 204046471 U CN204046471 U CN 204046471U CN 201420500993 U CN201420500993 U CN 201420500993U CN 204046471 U CN204046471 U CN 204046471U
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Abstract
The utility model relates to the winding series parallel circuit structure in a kind of attached brushless DC motor of electric vehicle control system, change traditional simplex winding type motor controller system into Multiple coil connection in series-parallel combined motor controller system, namely the multiple windings in an electric machine casing are combined by connection in series-parallel, achieve the high efficiency of motor under any rotating speed, high moment of torsion, high-power operation, therefore, properties and stability, the raising competitiveness of product in market of motor can effectively be improved.
Description
Technical field
The utility model relates to the control technology of motor, the winding series parallel circuit structure specifically in a kind of attached brushless DC motor of electric vehicle control system.
Background technology
Current electric vehicle motor controller system is simplex winding driving design, originates from before and after 2000, due to manufacture craft maturation, simply and is generally used, so be also widely used so far on the control field of electric vehicle motor always.
Current motor controller system mainly comprises current control unit and reversing unit, the speed governing of motor is mainly by current chopping mode, the 3-10 that the phase current of motor when low speed heavy load can reach source current is doubly even higher, therefore, the caloric value of traditional motor controller system power device is larger, temperature rise is higher, and its functional reliability is also poor.
Along with going from strength to strength of electric motor car selling market, user to the requirements of electric motor car also in continuous lifting, the particularly job stability aspect of electric machine control system, therefore electric vehicle motor controller manufacturing enterprise is also undergo severe market competition and technological challenge.
Utility model content
Motor winding series parallel circuit structure in a kind of attached brushless DC motor of electric vehicle control system, comprise the independently power supply unit of internal circuit, independently current strength control unit, independently series-parallel circuit switch control unit, an independently sense of current reversing unit etc., achieve the high efficiency of motor under any rotating speed, high moment of torsion, high-power operation, therefore, properties and stability, the raising competitiveness of product in market of motor can effectively be improved.
For achieving the above object by the following technical solutions:
Winding series parallel circuit structure in a kind of attached brushless DC motor of electric vehicle control system, it is characterized in that: the power supply unit, the independently current strength control unit that comprise an independently internal circuit, an independently series-parallel circuit switch control unit and two or more independently sense of current reversing unit; Power supply unit, current strength control unit and series-parallel circuit switch control unit are sequentially connected in series; One end of two or more independently sense of current reversing units connects series-parallel circuit switch control unit, and one of them three-phase of the other end and motor or polyphase windings are connected.
Described power supply unit comprises: filtering, voltage stabilizing, current foldback circuit; Described current strength control unit comprises: pulse-width modulation circuit, power output circuit, logic function circuit; Described series-parallel circuit switch control unit comprises: current path commutation circuit, logic function circuit; Sense of current reversing unit comprises: magnetic field position signal decoding and drive circuit, logic function circuit, electric current commutation power output circuit.
The utility model has following technological merit:
1. after multiwinding machine carries out tandem working by the connection in series-parallel combinational circuit in brushless DC motor control system, motor winding reversing unit is operated in the electric current commutation states of low amplitude, and switching loss and the conduction loss of power device are lower.Because the internal resistance when motor windings in series is larger, current strength control unit in control system when copped wave without the need to carrying out current chopping by a relatively large margin, caloric value wants little many, therefore the electronic devices and components that power headroom is less be can select, stability and cost-saving object improved to reach.
2. after multiwinding machine carries out tandem working by the connection in series-parallel combinational circuit in brushless DC motor control system, the number of turn of winding doubles or more than one times, motor can obtain larger moment of torsion with lower rotating speed and less electric current and export, therefore, the operating efficiency of motor when low speed heavy load can effectively be promoted.
3. after multiwinding machine carries out parallel operation by the connection in series-parallel combinational circuit in brushless DC motor control system, the sectional area of winding doubles or more than one times, motor speed be series connection time twice or twice more than, therefore, the power output of motor when high speed can effectively be promoted.
4. multiwinding machine carries out independent assortment by series-parallel circuit, the motor being equivalent to N number of different rated operational voltage rolls into one, possesses all advantages of moment of torsion type motor, balanced type, velocity profile motor, namely during high-speed cruising, the power of motor is large, efficiency is high, the good stability of motor when middling speed is run, efficiency are high, and during low cruise, the moment of torsion of motor is large, efficiency is high.
Accompanying drawing explanation
Fig. 1 is the utility model circuit structure diagram.
Embodiment
As shown in Figure 1, motor winding series parallel circuit structure in a kind of attached brushless DC motor of electric vehicle control system, comprise power supply unit, an independently current strength control unit of an independently internal circuit, an independently series-parallel circuit switch control unit, two or more is sense of current reversing unit independently.Power supply unit, current strength control unit, series-parallel circuit switch control unit and sense of current reversing unit are serially connected on the operating circuit of motor successively; Described current strength control unit, series-parallel circuit switch control unit and sense of current reversing unit can concentrate on co-ordination in a casing, also can by the separately co-ordination in two different casings of corresponding cable.
Content described in figure is: 1. the power supply unit of internal circuit; 2. current strength control unit; 3. series-parallel circuit switch control unit; 4. sense of current reversing unit, totally four parts, wherein:
1. the power supply unit of internal circuit comprises: the circuit such as filtering, voltage stabilizing, overcurrent protection;
2. current control unit comprises: pulse-width modulation circuit, power output circuit, logic function circuit;
3. series-parallel circuit switch control unit comprises: current path commutation circuit, logic function circuit;
4. electric current reversing unit comprises: magnetic field position signal decoding and drive circuit, logic function circuit, electric current commutation power output circuit.
The utility model has following technological merit:
5. after multiwinding machine carries out tandem working by the connection in series-parallel combinational circuit in brushless DC motor control system, motor winding reversing unit is operated in the electric current commutation states of low amplitude, and switching loss and the conduction loss of power device are lower.Because the internal resistance when motor windings in series is larger, current strength control unit in control system when copped wave without the need to carrying out current chopping by a relatively large margin, caloric value wants little many, therefore the electronic devices and components that power headroom is less be can select, stability and cost-saving object improved to reach.
6. after multiwinding machine carries out tandem working by the connection in series-parallel combinational circuit in brushless DC motor control system, the number of turn of winding doubles or more than one times, motor can obtain larger moment of torsion with lower rotating speed and less electric current and export, therefore, the operating efficiency of motor when low speed heavy load can effectively be promoted.
7. after multiwinding machine carries out parallel operation by the connection in series-parallel combinational circuit in brushless DC motor control system, the sectional area of winding doubles or more than one times, motor speed be series connection time twice or twice more than, therefore, the power output of motor when high speed can effectively be promoted.
8. multiwinding machine carries out independent assortment by series-parallel circuit, the motor being equivalent to N number of different rated operational voltage rolls into one, possesses all advantages of moment of torsion type motor, balanced type, velocity profile motor, namely during high-speed cruising, the power of motor is large, efficiency is high, the good stability of motor when middling speed is run, efficiency are high, and during low cruise, the moment of torsion of motor is large, efficiency is high.
Claims (2)
1. the winding series parallel circuit structure in an attached brushless DC motor of electric vehicle control system, it is characterized in that: the power supply unit, the independently current strength control unit that comprise an independently internal circuit, independently series-parallel circuit switch control unit and two or more independently sense of current reversing units; Power supply unit, current strength control unit and series-parallel circuit switch control unit are sequentially connected in series; One end of two or more above independently sense of current reversing units connects series-parallel circuit switch control unit, and one of them three-phase of the other end and motor or polyphase windings are connected.
2. the winding series parallel circuit structure in a kind of attached brushless DC motor of electric vehicle control system as claimed in claim 1, is characterized in that: described power supply unit comprises: filtering, voltage stabilizing, current foldback circuit; Described current strength control unit comprises: pulse-width modulation circuit, power output circuit, logic function circuit; Described series-parallel circuit switch control unit comprises: current path commutation circuit, logic function circuit; Sense of current reversing unit comprises: magnetic field position signal decoding and drive circuit, logic function circuit, electric current commutation power output circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500993.4U CN204046471U (en) | 2014-09-02 | 2014-09-02 | Winding series parallel circuit structure in attached brushless DC motor of electric vehicle control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420500993.4U CN204046471U (en) | 2014-09-02 | 2014-09-02 | Winding series parallel circuit structure in attached brushless DC motor of electric vehicle control system |
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| CN204046471U true CN204046471U (en) | 2014-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099284A (en) * | 2015-04-09 | 2015-11-25 | 重庆力华科技有限责任公司 | Method for controlling motor to work at multiple rotating speeds |
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2014
- 2014-09-02 CN CN201420500993.4U patent/CN204046471U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099284A (en) * | 2015-04-09 | 2015-11-25 | 重庆力华科技有限责任公司 | Method for controlling motor to work at multiple rotating speeds |
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