Medium Voltage High-Power Converter Topology for 10-MW, 10-kV wind generation with the Large Permanent Magnet

Abstract

Wind energy is an important area of operation of variable-speed generators working under a constant grid frequency. This paper illustrates the operation and control of one of these variable-speed wind generators, the direct driven permanent magnet synchronous generator (PMSG). This generator is connected to the power network by means that of a totally controlled frequency converter, which consists of a pulse width-modulation (PWM) rectifier, associate intermediate dc circuit, and a PWM inverter. This paper presents a basic rule to design multilevel modular high power converters for large wind turbine power conversion.