The invention discloses a permanent magnet synchronous motor wide voltage range control method based on a current lookup table and a medium. The method comprises the steps of obtaining a rotating speed-torque two-dimensional lookup table under rated bus voltage through a full-speed-domain current calibration method; based on the lookup table, wide voltage range control is achieved by multiplying the given rotating speed by the ratio of front and back amplitude limiting voltages; and friction torque compensation and three-phase current sampling delay compensation under different rotating speeds are carried out. According to the method, the bus voltage fluctuation of the electric vehicle under the complex working condition is considered, and the given rotating speed is multiplied by the variable voltage coefficient ku to obtain the input rotating speed of the input current lookup table, so that the accurate current control of the permanent magnet synchronous motor under different bus voltage working conditions is realized; the complex and tedious process of current lookup table recalibration under different bus voltages is avoided, friction torque compensation and phase current sampling delay compensation under different rotating speeds are considered, and friction torque compensation can be achieved by directly adding a friction torque error into a torque given signal in real time.
本发明公开了一种基于电流查找表的永磁同步电机宽电压范围控制方法及介质。该方法包括:通过全速域电流标定方法,获得额定母线电压下的转速‑转矩二维查找表;基于查找表,通过给定转速乘前后限幅电压比值实现宽电压范围控制;进行不同转速下的摩擦力矩补偿和三相电流的采样延时补偿。本发明通过考虑了电动汽车复杂工况下的母线电压波动,令给定转速乘以变电压系数ku得到输入电流查找表的输入转速,从而实现永磁同步电机在不同母线电压工况下的精确电流控制,避免了不同母线电压下电流查找表重新标定的复杂繁琐流程,考虑了不同转速下的摩擦力矩补偿和相电流采样延时补偿,其中摩擦力矩补偿直接在转矩给定信号中实时加入摩擦力矩误差即可实现。
Permanent magnet synchronous motor wide voltage range control method based on current lookup table and medium
基于电流查找表的永磁同步电机宽电压范围控制方法及介质
26.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Vector Control of Permanent-Magnet Synchronous Motor in Wide Speed Range
British Library Online Contents | 1995
|Europäisches Patentamt | 2023
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