Electric automobile and motor speed control method and device

• Main Authors: DING RUNDONG, XU BEN, YU ANBO, HUO JIONG, WANG HUI
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2023
• 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

The invention provides an electric vehicle and a motor speed control method and device. The method comprises the steps that the current control state and the steady-state IP parameter of a motor are determined; based on the current control state, determining a feed-forward mode and a target debugging IP parameter of the motor matched with the current control state; the target debugging IP parameter is debugged based on the feedforward mode and/or the steady-state IP parameter, so that control over the running speed of the motor is achieved, namely, speed control is conducted on the motor through IP control, overshoot during steady-state control can be eliminated, and the problem that existing variable structure fuzzy control can only restrain control overshoot of a PI regulator but cannot eliminate control overshoot of the PI regulator is solved; in addition, a variable structure IP control method is adopted, the system parameter setting and debugging difficulty can be effectively reduced, and the motor has g