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DTPPMSM harmonic current suppression method and system based on IRC-PIC parallel connection

A harmonic current and parallel technology, applied in the field of DTPPMSM harmonic current suppression method and system, can solve the problems affecting the service life and operation efficiency of the motor, reduce the motor control performance, motor torque ripple, etc., so as to improve the suppression of periodic harmonics. Wave interference and zero-error tracking ability, good dynamic steady-state tracking performance, and the effect of reducing current harmonics

Pending Publication Date: 2020-10-30
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the distortion of the air-gap magnetic field of the motor, the dead zone effect of the inverter, and the voltage drop of the tube, a large number of 6n±1 times (n=1,2,3,...) Harmonic current, the introduction of harmonic current will increase the system loss, cause the torque ripple of the motor, affect the service life and operating efficiency of the motor, and reduce the control performance of the motor; One of the urgent problems to be solved in the motor AC speed control system

Method used

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  • DTPPMSM harmonic current suppression method and system based on IRC-PIC parallel connection
  • DTPPMSM harmonic current suppression method and system based on IRC-PIC parallel connection
  • DTPPMSM harmonic current suppression method and system based on IRC-PIC parallel connection

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Embodiment 1

[0046] refer to Figure 1 to Figure 5 , which is the first embodiment of the present invention, provides a DTPPMSM (Double three phase permanent magnet synchronous motor double three phase permanent magnet synchronous motor) in parallel based on IRC-PIC (Improved repetitive controller, complex PI controller) ) Harmonic current suppression method, including:

[0047] S1: Calculate the difference and sum of d1-axis feedback current id1, q1-axis feedback current iq1, d1-axis given reference current id1*, and q1-axis given reference current iq1* to obtain current error signals △id1 and △iq1. What needs to be explained is:

[0048] The stator current of the motor passes through the Clark converter and the park converter to obtain the d1-axis and q1-axis feedback currents;

[0049] △id1=id1*-id1;

[0050] Δiq1=iq1*-iq1.

[0051] S2: Input the current error signals △id1 and △iq1 into the improved repetitive controller and the complex PI controller for processing respectively, and...

Embodiment 2

[0097] refer to Figure 6 ~ Figure 9 , is the second embodiment of the present invention, which is different from the first embodiment in that it provides a DTPPMSM harmonic current suppression system based on IRC-PIC parallel connection, including dual three-phase permanent magnet synchronous motors (That is, the dual three-phase permanent magnet synchronous motor is established by the ABC winding and the XYZ winding, so there are two d axes and two q axes, which are the d1 axis and q1 axis of the ABC winding, and the d2 axis and q2 axis of the XYZ winding) Double dq control module and four improved repetitive controllers; dual three-phase permanent magnet synchronous motor double dq control module includes, speed controller, two d-axis current controllers, two q-axis current controllers, Park inverse converter , space vector PWM processor, two three-phase inverters, dual three-phase permanent magnet synchronous motors, Clark converter, Park converter, position sensor, positi...

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Abstract

The invention discloses a DTPPMSM harmonic current suppression method and system based on IRC-PIC parallel connection. The method comprises steps of respectively carrying out the difference sum calculation of d-axis and q-axis feedback currents of a double three-phase permanent magnet synchronous motor and a given reference current, and obtaining a current error signal; inputting the current errorsignal into an improved repetitive controller and a complex PI controller for processing to obtain the d-axis voltage output signal and the q-axis voltage output signal; calculating the voltage output signal by using a summation strategy to obtain a final voltage output signal; and controlling alternating current components in the d-axis current and the q-axis current by using the final voltage output signal to suppress current harmonics. The method can effectively reduce the current harmonics of the double three-phase permanent magnet synchronous motor, and is better in dynamic steady-statetracking performance.

Description

technical field [0001] The invention relates to the technical field of power electronics and motor drive, in particular to a DTPPMSM harmonic current suppression method and system based on IRC-PIC parallel connection. Background technique [0002] With the continuous progress and development of power electronics technology, the advantages of the multi-phase motor speed control system have been fully utilized. Compared with the traditional three-phase motor system, the multi-phase motor speed control system has the characteristics of low voltage and high power output. It has small torque ripple and good fault tolerance. Its outstanding features are especially suitable for electric vehicles, ship electric propulsion, rail transit, aerospace and other fields. Dual three-phase permanent magnet synchronous motors are one of the multi-phase motor systems. An important branch, which combines the advantages of multiphase motors and permanent magnet synchronous motors, is currently a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/22H02P21/05
CPCH02P21/05H02P21/22
Inventor 王爽陈康赵剑飞
Owner SHANGHAI UNIV