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Alternating current permanent magnet synchronous machine control system for electric vehicle

A permanent magnet synchronous motor and control system technology, applied in the direction of AC motor control, control system, single motor speed/torque control, etc., can solve the problem of low control accuracy, achieve stable control system, easy maintenance, and reduce heat generation Effect

Inactive Publication Date: 2012-03-14
程基江
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest disadvantage is that the control precision is not high, so it is usually used in some occasions that require low precision

Method used

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  • Alternating current permanent magnet synchronous machine control system for electric vehicle
  • Alternating current permanent magnet synchronous machine control system for electric vehicle
  • Alternating current permanent magnet synchronous machine control system for electric vehicle

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Embodiment Construction

[0028] see figure 1 , according to the electric vehicle AC permanent magnet synchronous motor control system provided by the present invention, comprise DSP microprocessor (model: TMS320F243), power converter, AC permanent magnet synchronous motor and position detector and current detector, position detector and current detector The detector is used to respectively detect the rotor position, rotor speed and phase current of the AC permanent magnet synchronous motor. When working, the position detector inputs the detected rotor position signal and rotor speed signal from the QEP unit of the DSP microprocessor, and the current detection The current signal detected by the device is input by the A / D conversion interface of the DSP microprocessor, and the DSP microprocessor calculates the given value of the current according to the input rotor position signal and rotor speed signal, and then compares it with the input current detection value By comparison, the corresponding control...

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Abstract

The invention discloses an alternating current permanent magnet synchronous machine control system for an electric vehicle. The system comprises an alternating current permanent magnet synchronous machine, a power convertor, a controller and detectors; the controller is a digital signal processor (DPS); the detectors comprise a position detector and a current detector; the position detector and the current detector input rotor positions / speed signals and current signals, which are detected by the position detector and the current detector respectively, of the alternating current permanent magnet synchronous machine to the DSP; the DSP calculates the given value of the current according to the input rotor positions / the speed signals and compares the given value and the input current detection value to obtain a corresponding control signal, and the alternating current permanent magnet synchronous machine is driven by the power convertor; and the power convertor has a three-phase double-inversion bridge structure consisting of a metal-oxide-semiconductor field effect transistor (MOSFET) inverter and an insulated gate bipolar transistor (IGBT) inverter. The system has the advantages of compact and firm structure, reliable performance, high control efficiency and accuracy and the like and runs stably and a circuit is simple.

Description

Technical field: [0001] The invention relates to the field of permanent magnet synchronous motor control, in particular to an electric vehicle AC permanent magnet synchronous motor control system. Background technique: [0002] The motor control system is an essential part of electric vehicles, which determines whether the driving performance of electric vehicles is good or not. In the past ten years, it has mainly developed AC asynchronous motor controllers and brushless permanent magnet motor controllers. Compared with the original DC traction motor controller, it has obvious advantages, and its outstanding advantages are high efficiency, basically maintenance-free, and wide speed regulation range. Its research and development status and development trend are as follows. [0003] 1. Asynchronous motor controller [0004] The asynchronous motor controller is characterized by ruggedness, reliable operation, low torque ripple, low noise, no need for a position sensor, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08H02P6/16H02P27/06
Inventor 程基江
Owner 程基江
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