Patent ID: 9634575
Date: 2017-04-25
CPC Classifications: H02J,H02M

Claim:
1. A method for controlling an inverter system including a plurality of inverter units coupled in parallel, the method comprising: receiving a feedback signal Vmg reflecting load voltage and a voltage reference signal Vref; generating a command signal reflecting inverter output power according to the feedback signal Vmg reflecting load voltage and the voltage reference signal Vref, wherein the command signal reflecting inverter output power comprises a command signal P taking the command signal P transversely translating the active power-output voltage frequency curve (P-F) of the inverter unit according to the first offset, transversely translating the reactive power-output voltage amplitude curve (Q-V) of the inverter unit according to the second offset, and adjusting load voltage of the inverter system by means of adjusted output voltage frequency and output voltage amplitude of the inverter unit.