Comparison of LCL-Filter-Based PWM Rectifier with Different Current Sensor Positions

For LCL-based PWM rectifier, there are two options of sensing currents. Either grid side currents or converter side currents can be selected as the feedback signals for the current control loop. The selection of sensor position makes the design of the control system different. In this paper, the control stability and dynamic performance of LCL filter-based PWM rectifier with converter side current control or with grid side current control are compared. System stability and dynamic performance are compared with taking into account the effect of all possible variants. Further more, the comparison results provide a very useful design guideline for LCL filter-based PWM rectifiers. Finally experimental results prove the theoretical analysis.

[1]  V. Blasko,et al.  A novel control to actively damp resonance in input LC filter of a three-phase voltage source converter , 1997 .

[2]  S. Bernet,et al.  New simple active damping of resonance in three-phase PWM converter with LCL filter , 2005, 2005 IEEE International Conference on Industrial Technology.

[3]  M. Liserre,et al.  Genetic algorithm based design of the active damping for a LCL-filter three-phase active rectifier , 2004, Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03..

[4]  M. Liserre,et al.  Design and control of an LCL-filter based three-phase active rectifier , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[5]  J.W. Kolar,et al.  A modified direct power control strategy allowing the connection of three-phase inverter to the grid through LCL filters , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[6]  M. Liserre,et al.  Genetic algorithm-based design of the active damping for an LCL-filter three-phase active rectifier , 2003, IEEE Transactions on Power Electronics.

[7]  M. Liserre,et al.  A stable three-phase LCL-filter based active rectifier without damping , 2003, 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003..

[8]  P.W. Lehn,et al.  Digital Current Control of a Voltage Source Converter With Active Damping of LCL Resonance , 2006, IEEE Transactions on Power Electronics.