Application of indirect matrix converters to variable speed doubly fed induction generators

Abstract

In this work, the control of a Doubly fed induction machine using an indirect matrix converter, connected between the stator and the rotor, is presented. Unlike the traditional scheme, where two back-to-back PWM inverters are used, this converter eliminates the use of bulky DC link capacitors and provides an all silicon solution for direct AC-AC conversion, with sinusoidal input currents and close to unity power factor operation. The machine rotor currents are controlled applying vector control approach with a reference frame aligned with the stator flux vector. The scheme is experimentally verified using a 3kW variable speed energy system prototype. A TMS320C6713 DSP is used as a control platform and experimental results are presented for operation from below and above synchronous speed both in steady state and transient conditions.

Multiphase Wind Energy Conversion Systems Based on Matrix Converter

“…The direct MC can be used as an alternative to the DClink voltage-sourced converter for WECS [10]. It features no energy storage components (DC electrolytic capacitors or inductors), has bidirectional power flow capability and controllable input power-factor [11].…”

A high power density three phase AC-DC converter for more electric aircraft (MEA)

“…The two stages in the power conversion can result in poor power conversion efficiency. The DC link capacitor is often electrolytic capacitor and for the high power application, the size of capacitor is significantly higher [9]. The limited life time of electrolytic capacitor combined with bulky size can introduce poor reliability and power density of the overall system [10].…”

Control of DFIG Wind Turbines Based on Indirect Matrix Converters in Short Circuit Mode to Improve the LVRT Capability

“…Utilizing matrix converters in DFIG wind turbines is still in research phase. Most of the works have dealt with their normal operation [27][28][29][30]. The control of a DFIG using an indirect matrix converter for dynamic performance evaluation under normal grid condition is presented in [27].…”

“…Most of the works have dealt with their normal operation [27][28][29][30]. The control of a DFIG using an indirect matrix converter for dynamic performance evaluation under normal grid condition is presented in [27]. Sigmadelta modulator to control IMC switches of DFIG based WT is proposed in [28].…”