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A vector control system and method for a permanent magnet synchronous motor for an electric vehicle

A permanent magnet synchronous motor, vector control technology, applied in vector control system, motor generator control, AC motor control and other directions, can solve the problems of rapidity and limited anti-interference, achieve good signal noise reduction, and is conducive to identification , the effect of fast response

Active Publication Date: 2016-01-20
HENAN SUDA ELECTRIC AUTOMOBILE TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the permanent magnet synchronous motor (PMSM) vector control system generally adopts the speed and current double closed-loop control method, and most of the speed control uses the traditional PID controller. Although the traditional PID control is simple in principle, robust and stable, But the speed and anti-jamming ability are very limited

Method used

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  • A vector control system and method for a permanent magnet synchronous motor for an electric vehicle
  • A vector control system and method for a permanent magnet synchronous motor for an electric vehicle
  • A vector control system and method for a permanent magnet synchronous motor for an electric vehicle

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Embodiment Construction

[0033] see figure 1 , the permanent magnet synchronous motor vector control system for electric vehicles of the present invention includes a three-phase inverter, the three-way output of the three-phase inverter is connected to the permanent magnet synchronous motor, and the permanent magnet synchronous motor is connected with a speed position detection module, The rotational speed position detection module is connected with an error comparison module, a Park inverse transformation module and a Park transformation module; the output terminal of the error comparison module is connected with the input terminal of the composite control regulation module, and the output terminal of the composite control regulation module is connected with the first comparison module; The first PI adjustment module is connected to the output end of a comparison module; the second PI adjustment module is connected to the output end of the second comparison module; the output ends of the first PI adju...

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Abstract

The invention provides a vector control system and method for a permanent magnet synchronous motor of an electric automobile, which are used for controlling a speed ring of the permanent magnet synchronous motor. A speed difference value e of the expected speed and the actual speed is acquired; the difference value is subjected to multi-resolution decomposition via small waves; the value of e in different ranges of time domains and frequency domains, which is acquired through decomposition, is processed; therefore, the speed control output u of the motor is acquired. The provided small-wave multi-resolution compound control system based on the permanent magnet synchronous motor vector control system adopts a compound control module for speed control, so that the system has the characteristics of high resolution, high sensitivity and wide adjustment scope. The system and the method have the advantages of simple structure, novel conception, rapid response and the like.

Description

technical field [0001] The invention belongs to the technical field of AC motor transmission, and relates to a vector control system and method for a permanent magnet synchronous motor used in electric vehicles based on wavelet multi-resolution MRPID control and integral structure composite control. Background technique [0002] The energy and environmental issues and the financial crisis faced by the automobile industry have made the research on electric vehicles attract extensive attention from all over the world. In addition to showing superiority and strong competitiveness in energy environmental protection and energy saving, electric vehicles also show huge advantages in vehicle performance. The torque response of electric vehicles is fast and the acceleration is fast, which is 2 orders of magnitude higher than that of fuel vehicles. The motor can be configured in a decentralized manner, and the wheel speed can be directly controlled by wire transmission electronic cont...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P27/06
Inventor 续丹杨长广房念兴曹秉刚
Owner HENAN SUDA ELECTRIC AUTOMOBILE TECH
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