Patent ID: 9054600
Filing Date: 2015-06-09
Classification: H02M

Abstract:
1. A control apparatus for regenerative medium voltage inverter, the apparatus comprising; a converter unit configured to include a plurality of power devices, and convert a three-phase power to a DC voltage; a gate signal generating unit configured to output a PWM signal which is a switching signal of the plurality of power devices; current controller configured to generate a voltage command from a current command and a measured current and apply the voltage command to the gate signal generating unit; a generating unit configured to generate a voltage compensating a power difference between an input and an output of the converter unit, and provide the voltage to the current controller; a phase detecting unit configured to provide phase angle information of an input power; and a first coordinate converting unit configured to convert the input power from a stationary reference frame to a synchronous reference frame and provide the converted input power to the current controller.