Method for adaptive field-weakening control of permanent magnet synchronous motor

Method for adaptive field-weakening control of permanent magnet synchronous motor

The present invention discloses a method for adaptive field-weakening control of a permanent magnet synchronous motor. The objective of the invention is to mainly solve the problems that a current field-weakening method depends too much on motor parameters and computation load of an algorithm is lar...

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Hauptverfasser: XU KAI, XU HONGBING, JIE HONGYU, GUO LUOLE, WANG YUEBIN, XIN XIAOSHUAI, ZHENG GANG
Format: Patent
Sprache:chi ; eng
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CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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creator XU KAI
XU HONGBING
JIE HONGYU
GUO LUOLE
WANG YUEBIN
XIN XIAOSHUAI
ZHENG GANG
description The present invention discloses a method for adaptive field-weakening control of a permanent magnet synchronous motor. The objective of the invention is to mainly solve the problems that a current field-weakening method depends too much on motor parameters and computation load of an algorithm is large in the prior art. The method provided by the invention, according to specific application conditions of a permanent magnet synchronous motor, calculates a real-time modulation ratio mr, a switching point modulation ratio mf, an exit field-weakening point modulation ratio mq and a modulation hysteresis width [Delta]m0, and determines a basic excitation current value [Delta]id0, a direction coefficient P1 and a field current difference coefficient P2, and a current instruction cycle instructionexcitation current is calculated through a formula. Through the above scheme, an influence of working conditions on field-weakening points is avoided, and field-weakening switching points are automatically switched according
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subjects CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
title Method for adaptive field-weakening control of permanent magnet synchronous motor
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