Patent ID: 9148070
Filing Date: 2015-09-29
Classification: H02J,H02M

Abstract:
1. A high power control system comprising: a single energy source; an energy source management unit configured to manage the single energy source; a plurality of inverters configured to convert a direct current into an alternating current and including a plurality of filters including a plurality of switches configured to regulate connections between the filters and a load and including a single controller configured to output a PWM control signal to the first and second inverters and a regulation control signal to the first and second switches, under a control of the energy source management unit, wherein all of the plurality of inverters and switches are controlled by the single controller, wherein when the second inverter is to be operated in a state where the first inverter is being operated, the single controller first applies the PWM control signal to the second inverter and then applies the regulation control signal to the second switch to connect the second inverter to the load, wherein applying the PWM control signal to the second inverter and applying the regulation control signal to the second switch are performed in this order to prevent a circulating current from flowing among the inverters, and wherein a number of inverters to be operated increases gradually as a size of the load increases in order to reduce a total harmonic distortion (THD).