It is suggested to replace the double-fed generator by the six-phase low-speed permanent-magnet generator,and to use "uncontrollable rectifier + Boost chopper + SPWM converter" in converter system.

The DC boost chopper and buck chopper are used in cascade drive systems with chopper, variable-speed wind turbines with permanent magnet generators and permanent magnet brushless DC motor drive systems.

The control scheme based on uncontrolled rectifying,boost chopping and sine pulse-width modulation (SPWM) inverter circuit were designed for the existing grid-connected scheme of direct-drive permanent magnet wind power generation system.

Research on Multiple Boost Converter of Wind Power Generation System;

A design of boost converter using high-power insulated bipolar transistor IGBT module named SKM75GAL123D and driver module named EXB840 is introduced.

Background of the wind energy conversion system with permanent-magnet synchronous wind power generator,the DC link of AC-DC-AC power converter——multiple boost converter was researched.

In this paper low-voltage AC of rotor winding can be pumped to high-voltage DC by AC boost-chopper technology, and the DC feedbacks to power network by inverter.

This paper analyzes the principle of Boost/Buck chopper,introduces the characteristic of integrated chip SG3525,in addition,this paper analyzes and does experiment with DC pulse width speed control circuit which controlls by SG3525 and implements by Boost/Buck chopper.