Motor output capability calculating method

Abstract

The invention discloses a motor output capability calculating method. A motor rotating speed sensor, a stator temperature sensor, a rotor temperature sensor and a motor controller are involved. The motor output capability calculating method has the following steps that A, the maximum output torque allowed in a current rotating speed is calculated according to the maximum power, allowed in vehicle electric energy, of a motor, the maximum torque, allowed at a current temperature, of the motor is obtained through the temperature of the motor, the maximum output torque of the motor is calculated through the controller, comparing is conducted, and the minimum value is obtained; B, the minimum output torque is calculated according to the allowed maximum charging power of the motor, the temperature correction minimum torque is obtained through the current temperature of the motor, the maximum generating torque of the motor is obtained through the motor controller, comparing is conducted, and the maximum value is obtained; and C, CAN communication analysis is conducted on the minimum output torque of the motor in the step A and the maximum allowed torque of the motor in the step B. The calculating method is simple, improving of the suing stability and the reliability of an electric automobile is facilitated, applicability is high, and practicability is good.

Description

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AI Technical Summary

Benefits of technology

This patented technology makes it easy for an electrified car's power supply system to calculate its own maximum allowed battery charge or discharge capabilities based on factors like how many passengers are getting off at once (the number of times they have stopped working). It also allows users to easily control their driving experience by controlling the amount of energy supplied from this charger.

Problems solved by technology

The technical problem addressed by this patented solution relates how accurate determination can be made on an electrical machine's ability to produce power without being affected negatively or with regards other factors like battery life.

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