A rectifier circuit for starting a generator integrated machine

Abstract

A rectifier circuit for starting a power generation integrated machine, including a voltage detection module, a selection and control signal generation module, a logic judgment module, a drive module and a rectifier bridge, the input end of the voltage detection module is connected to the UVW three-phase input voltage, and the output end Output the pairwise comparison results of the UVW three-phase input voltage after the voltage division; the selection and control signal generation module is used to generate the mode selection signal and control the six control signals of the six power switch tubes in the rectifier bridge; the logic judgment module is in the electric mode The six control commands issued by the lower output selection and control signal generation module, in the power generation mode, perform logic processing to output the rectification control signal; the drive module is used to convert the drive signal generated by the logic judgment module to control the six power switch tubes in the rectifier bridge The gate control signal; the rectifier bridge is a rectifier in the power generation mode, and an inverter in the electric mode. The invention integrates rectification control and electric control, has simple circuit and saves resources.

Description

technical field [0001] The invention belongs to the field of power electronics, and relates to a rectifier circuit for starting an integrated generator. Background technique [0002] With the continuous development of science and technology and the continuous reduction of natural resources, people pay more and more attention to energy conservation and environmental protection. The all-in-one starter generator uses a motor to replace the traditional starter and generator on the engine. In the initial stage, it is the starter to drive the engine to run, reducing the engine's idle loss and pollution. When it is running normally, it can also act as a generator. The motor power supply is charged and the energy is recovered, so the all-in-one starter generator will have a large application market. [0003] The traditional starter and generator all-in-one machine separates the starter circuit from the rectifier circuit, resulting in complex circuits and waste of hardware resources...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the separation of the starting circuit and the rectifier circuit in the traditional starter-generator integrated machine leads to complicated current and waste of resources, the present invention proposes a rectifier circuit for the starter-generator integrated machine, which uses combinational logic to judge the phase voltage, thereby realizing synchronization Rectification, the circuit is simple and easy to implement; the rectification circuit and the start-up control are integrated to save hardware resources; in addition, a MOS tube (metal oxide semiconductor, metal-oxide-semiconductor) is used as the rectifier bridge, because the conduction voltage of the MOS tube is reduced, the on-resistance Small, using it to replace the diode can greatly reduce the loss and improve the power generation efficiency

Images