Patent ID: 11949346
Assignee: HL MANDO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 3:
4. A method performed in a control module of an inverter apparatus, the method comprising:
outputting a voltage control signal, based on an error value that is a difference between an AC output voltage of the inverter apparatus and a reference voltage, wherein the outputting of the voltage control signal is performed by one of a proportional integral (PI) controller, a proportional differential (PD) controller, and a proportional integral differential (PID) controller;
outputting a damping control signal by reflecting a virtual damping component corresponding to a value of a virtual damping resistor to the AC output voltage; and
calculating, in consideration of an AC voltage output from an inverter circuit module in the inverter apparatus, a control signal for controlling the inverter circuit module from a signal obtained by subtracting the damping control signal from the voltage control signal.