Abstract:
The power quality of grid-connected inverters has drawn a lot of attention with the increased application of distributed power generation systems. The repetitive control ...Show MoreMetadata
Abstract:
The power quality of grid-connected inverters has drawn a lot of attention with the increased application of distributed power generation systems. The repetitive control technique is widely adopted in these systems, due to its excellent tracking performance and low output total harmonic distortion (THD). However, in an actual system, the ratio of the sampling frequency to the grid frequency cannot always maintain an integer, and then, the resonant frequencies of the repetitive control technique will deviate from the real grid fundamental and harmonic frequencies. This will degrade the performance of the system, particularly when the grid frequency varies. Even if the ratio is a fixed integer, the auxiliary function for stabilization in the conventional repetitive control technique will also increase the steady-state tracking error and THD of the system. In this paper, an improved repetitive control scheme with a special designed finite impulse response (FIR) filter is proposed. The FIR filter cascaded with a traditional delay function can approximate the ideal repetitive control function of any ratio. The proposed scheme varies the FIR filter according to varied grid frequency and maintains its resonant frequencies matching the grid fundamental and harmonic ones. Finally, the simulation and experimental results show that the improved repetitive control scheme can effectively reduce the tracking error and compensate harmonics of the inverter systems.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 60, Issue: 2, February 2013)
College of Electrical Engineering, University of Zhejiang, Hangzhou, China
Dong Chen was born in Henan, China, in 1983. He received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 2006, where he is currently working toward the Ph.D. degree in electrical engineering.
His current research interests include grid-connected inverter systems, modern control technologies, and digital control.
Dong Chen was born in Henan, China, in 1983. He received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 2006, where he is currently working toward the Ph.D. degree in electrical engineering.
His current research interests include grid-connected inverter systems, modern control technologies, and digital control.View more
College of Electrical Engineering, University of Zhejiang, Hangzhou, China
Junming Zhang (M'10) received the B.S. degree from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1996, and the M.S. and Ph.D. degrees in electrical engineering from Zhejiang University in 2000 and 2004, respectively.
He is currently an Associate Professor with the College of Electrical Engineering, Zhejiang University. His research interests include power electronic system integration, hig...Show More
Junming Zhang (M'10) received the B.S. degree from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1996, and the M.S. and Ph.D. degrees in electrical engineering from Zhejiang University in 2000 and 2004, respectively.
He is currently an Associate Professor with the College of Electrical Engineering, Zhejiang University. His research interests include power electronic system integration, hig...View more
College of Electrical Engineering, University of Zhejiang, Hangzhou, China
Zhaoming Qian (SM'92) received the B.S. degree in radio engineering from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1961, and the Ph.D. degree in applied science from the Catholic University of Leuven, Leuven, Belgium, and the Interuniversity Microelectronics Center, Leuven, in 1989.
Since 1961, he has been involved in teaching and research work on electronics and power electronics at Z...Show More
Zhaoming Qian (SM'92) received the B.S. degree in radio engineering from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1961, and the Ph.D. degree in applied science from the Catholic University of Leuven, Leuven, Belgium, and the Interuniversity Microelectronics Center, Leuven, in 1989.
Since 1961, he has been involved in teaching and research work on electronics and power electronics at Z...View more
Contents College of Electrical Engineering, University of Zhejiang, Hangzhou, China
Dong Chen was born in Henan, China, in 1983. He received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 2006, where he is currently working toward the Ph.D. degree in electrical engineering.
His current research interests include grid-connected inverter systems, modern control technologies, and digital control.
Dong Chen was born in Henan, China, in 1983. He received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 2006, where he is currently working toward the Ph.D. degree in electrical engineering.
His current research interests include grid-connected inverter systems, modern control technologies, and digital control.View more
College of Electrical Engineering, University of Zhejiang, Hangzhou, China
Junming Zhang (M'10) received the B.S. degree from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1996, and the M.S. and Ph.D. degrees in electrical engineering from Zhejiang University in 2000 and 2004, respectively.
He is currently an Associate Professor with the College of Electrical Engineering, Zhejiang University. His research interests include power electronic system integration, high-performance dc–dc converters, and high-power inverters.
Junming Zhang (M'10) received the B.S. degree from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1996, and the M.S. and Ph.D. degrees in electrical engineering from Zhejiang University in 2000 and 2004, respectively.
He is currently an Associate Professor with the College of Electrical Engineering, Zhejiang University. His research interests include power electronic system integration, high-performance dc–dc converters, and high-power inverters.View more
College of Electrical Engineering, University of Zhejiang, Hangzhou, China
Zhaoming Qian (SM'92) received the B.S. degree in radio engineering from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1961, and the Ph.D. degree in applied science from the Catholic University of Leuven, Leuven, Belgium, and the Interuniversity Microelectronics Center, Leuven, in 1989.
Since 1961, he has been involved in teaching and research work on electronics and power electronics at Zhejiang University, where he has been a Professor with the College of Electrical Engineering since 1992. He authored one book on electromagnetic compatibility (EMC) design and more than 200 papers. His main professional interests include power electronics and its industrial applications, power electronic system integration, and EMC in power electronic systems.
Dr. Qian was the recipient of the Excellent Education Award from the China Education Commission and from Zhejiang University in 1993, 1997, and 1999, respectively, and the Science and Technology Development Award from the China Education Commission in 1999 and 2003.
Zhaoming Qian (SM'92) received the B.S. degree in radio engineering from the College of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1961, and the Ph.D. degree in applied science from the Catholic University of Leuven, Leuven, Belgium, and the Interuniversity Microelectronics Center, Leuven, in 1989.
Since 1961, he has been involved in teaching and research work on electronics and power electronics at Zhejiang University, where he has been a Professor with the College of Electrical Engineering since 1992. He authored one book on electromagnetic compatibility (EMC) design and more than 200 papers. His main professional interests include power electronics and its industrial applications, power electronic system integration, and EMC in power electronic systems.
Dr. Qian was the recipient of the Excellent Education Award from the China Education Commission and from Zhejiang University in 1993, 1997, and 1999, respectively, and the Science and Technology Development Award from the China Education Commission in 1999 and 2003.View more
