Hybrid power zero-moment control method and device and hybrid power equipment

Abstract

The invention provides a hybrid power zero-moment control method. The hybrid power zero-moment control method comprises the steps that when a motor is required to enter into a zero-moment mode, a given current and a detected direct current bus current are compared and calculated to obtain a given stator current torque component, and the given current is zero; a detected three-phase stator currentis transformed to obtain a current under a d-q two-phase rotating coordinate system; the current under the d-q two-phase rotating coordinate system is correspondingly compared and calculated with thegiven stator current torque component to obtain a voltage drive signal; and a synchronous motor is driven according to the voltage drive signal, and the synchronous motor is controlled to reach targettorque and a target position. By setting the given current as the zero and adjusting the magnitude of an output torque by PI, the direct current bus current is the zero in the end, the magnitude of the torque that a vehicle control unit requests is in direct response, and the problem that batteries are prone to being damaged by feed or over-charge of the batteries is solved.

Description

technical field [0001] The invention belongs to the technical field of hybrid power, and in particular relates to a hybrid power zero-torque control method, device, terminal equipment method and hybrid power equipment. Background technique [0002] The hybrid power system means that the car uses internal combustion engine drive and electric drive. The advantage is that when the vehicle starts and stops, it is only driven by the electric motor. The engine does not work until a certain speed is reached. Working conditions, good power, low emissions. [0003] Wherein, a control unit (Microcontroller Unit, MCU) of a motor of a hybrid system is used to control a motor (such as a synchronous motor or an induction motor) used in an electric vehicle or a hybrid vehicle. The general strategy between the MCU and the vehicle's Electronic Control Unit (ECU) is through CAN communication, and the MCU responds to the torque of the ECU in real time. [0004] However, in a traditional hybr...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiments of the present invention provide a hybrid zero-torque control method, device, and hybrid equipment to solve the problem that in a traditional hybrid system, when the motor is in zero-torque mode, the torque deviation causes the bus current to easily cause battery feed or overshoot. The problem of charging and damaging the battery

Images