Adaptive direct torque control method for flux linkage of non-salient pole type permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and direct torque control, which is applied in the direction of motor generator control, electronically commutated motor control, control system, etc., and can solve the problem of low power factor

Inactive Publication Date: 2011-01-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low power factor of traditional hidden pole permanent magnet synchronous motor direct torque control when the motor is running at no load and light load, so as to ensure that the motor has good dynamic performance and also has high power factor

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  • Adaptive direct torque control method for flux linkage of non-salient pole type permanent magnet synchronous motor
  • Adaptive direct torque control method for flux linkage of non-salient pole type permanent magnet synchronous motor
  • Adaptive direct torque control method for flux linkage of non-salient pole type permanent magnet synchronous motor

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Embodiment Construction

[0015] Describe the specific embodiment, working principle and working process of the present invention according to accompanying drawing:

[0016] The flux linkage adaptive direct torque control method of the hidden pole permanent magnet synchronous motor proposed by the present invention is based on figure 1 The direct torque control hardware system of the permanent magnet synchronous motor shown is realized, and the hardware system includes a main circuit formed by connecting the hidden pole permanent magnet synchronous motor 1 and the power converter 2; it is composed of a current sensor and a voltage sensor 6 The detection loop is a control loop composed of an analog-to-digital converter A / D 5 connected to a control unit 4 based on a digital signal processor (DSP) and then connected to a converter control signal 3 . The power converter can be composed of a discrete IGBT power tube or a power field effect tube, or an integrated intelligent power module (IPM); the current a...

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Abstract

The invention discloses an adaptive direct torque control method for flux linkage of a non-salient pole type permanent magnet synchronous motor. The method comprises the following steps of: determining a quadrature axis component of a stator flux linkage required at a certain load torque according to motor torque observed by a torque observer; and synthesizing a rectangular axis component of the stator flux linkage to finally obtain a stator flux linkage reference in the direct torque control method by taking the flux linkage of the rotor permanent magnet as a direct axis component of the stator flux linkage by reducing direct axis current of the motor and improving a power factor angle, wherein the stator flux linkage reference adaptively changes along with the variation of the motor load torque; and high-power-factor running of the permanent magnet synchronous motor is realized while torque response rapidity is ensured.

Description

technical field [0001] The invention relates to a flux linkage self-adaptive direct torque control method suitable for hidden pole permanent magnet synchronous motors, which belongs to the direct torque control application method of permanent magnet synchronous motors Background technique [0002] Due to its low loss, high efficiency, high power density and many other advantages, the permanent magnet synchronous motor has its application range covering almost every field of aerospace, national defense, industry and daily life, especially in high-performance AC speed regulation occasions, permanent magnet synchronous The application range of the motor is further expanded. [0003] The direct torque control method does not require strict magnetic field orientation, saves the current loop, has low dependence on motor parameters, can directly control the motor torque, and has excellent dynamic performance, which has attracted widespread attention. [0004] In 1997, a permanent ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P21/30
Inventor 胡育文杨建飞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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