Abstract：This paper analyzes the reason why Uninterruptible Power Supply produces DC bias of inverter output voltage, and proposes a Control strategy to eliminate the DC offset in the uninterrupted power supply (UPS). Firstly, the detailed design of DC suppression circuit is described, then, the testing process of the DC suppression circuit is discussed. The experiment in 10 kVA three phase UPS proves the feasibility and reliability of the control strategy.
何国锋. 不间断电源直流偏移抑制[J]. 电气技术, 2016, 17(4): 80-83.
He Guofeng. The Suppression of DC Bias for Uninterruptible Power Supply. Electrical Engineering, 2016, 17(4): 80-83.
2016, Vol. 17 
