Patent ID: 8345455
Filing Date: 2013-01-01
Classification: H02M

Abstract:
1. A control device of a high voltage inverter, the control device comprising: a phase shift transformer configured to shift phases (R, S, T) of received 3-phase voltage in order to generate a plurality of 3-phase voltages each having a different phase; an inverter configured to switch the generated plurality of 3-phase voltages in order to generate voltages each having a different phase and to output a 3-phase high voltage to a load by combining the generated voltages of each phase, the generated plurality of 3-phase voltages switched by a plurality of U phase unit cells, a plurality of V phase unit cells and a plurality of W phase unit cells; a plurality of current transformers (CTs) configured to detect a current of each phase output to the load by the inverter; and a master controller configured to: