Direct power control of three-phase VSIs for the minimization of common-mode emissions in distributed generation systems

2011 ◽  
Vol 81 (4) ◽  
pp. 830-839 ◽  
Author(s):  
Maurizio Cirrincione ◽  
Marcello Pucci ◽  
Gianpaolo Vitale
Keyword(s):  
Power Control ◽  
Distributed Generation ◽  
Direct Power ◽  
Direct Power Control ◽  
Common Mode ◽  
Three Phase

Quasi Resonant Direct Power Control of Three-Phase Grid-Connected Inverters in Distributed Generation Systems

2011 ◽  
Vol 48-49 ◽  
pp. 863-867
Author(s):  
Fang Ping Zhao ◽  
Yong Yang ◽  
Yi Yuan
Keyword(s):  
Power Control ◽  
Distributed Generation ◽  
Control Strategy ◽  
Experimental Results ◽  
Switching Frequency ◽  
Theoretical Principle ◽  
Output Current ◽  
Direct Power ◽  
Direct Power Control ◽  
Three Phase

The paper proposes a quasi resonant direct power control algorithm for three-phase grid-connected inverters without grid voltage sensors in distributed generation systems. According to the active and reactive power references, grid virtual flux and the inverter output current references are calculated. In order to accurately and fast track the output current references, the quasi proportional resonant (QPR) controller is used. The theoretical principle of this method is discussed. The steady-state and dynamic experimental results of quasi resonant direct power control that can illustrate the operation and performance of the presented control strategy are displayed. It is shown that the control system exhibits several advantages, such as constant switching frequency, sinusoidal grid currents and good dynamic response. Experimental results are provided to demonstrate the effectiveness of the proposed control strategy.

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