Traction motor control system, control method and computer readable storage medium

Abstract

The invention provides a traction motor control system, a control method and a computer-readable storage medium. The control system comprises a voltage amplitude control unit, a voltage phase angle control unit, a current sampling unit, a position feedback unit, a pulse wave adjusting unit and a three-phase inverter unit. Wherein the current sampling unit is used for sampling the three-phase alternating current output by the three-phase inverter unit; The position feedback unit is used for obtaining the actual electric angular velocity of the motor; The voltage magnitude control unit, configured to obtain an output voltage magnitude; The voltage phase angle control unit is used for obtaining an output voltage phase angle; The pulse wave adjusting unit generates a pulse width modulated signal; The three-phase inverter unit outputs three-phase alternating current to the traction motor. As that voltage amplitude control and the voltage phase angle control are simple and reliable in structure, the direct voltage of the motor can be fully utilized, and the problem that the alternating-direct-axis current coupling of the high-speed field weaken control of the motor causes the undesirablecontrol effect of the system can be solved.

Description

technical field [0001] The present invention relates to the field of motor control, and more specifically, relates to a traction motor control system, a control method and a computer-readable storage medium. Background technique [0002] Rail transit has many advantages such as large carrying capacity, fast speed, safe operation, energy saving, and not being affected by ground transportation. It has made important contributions to optimizing urban spatial structure and alleviating existing urban public transportation congestion. After years of development, the traction motor control system has gradually entered the market, and its domestic use range is expanding. However, higher requirements are put forward in terms of safety, reliability, and stability. Among them, the control performance of the motor in the high-speed field weakening area is One of the important performance and safety factors of the vehicle system. [0003] The traditional motor field weakening control al...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new traction motor control system, control method and computer-readable storage medium for the above-mentioned problem of unsatisfactory system control effect caused by the high-speed field-weakening control of the AC-DC axis current coupling

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