The Implementation and Analysis of Over-modulation Technique of Three-phase Current Source Rectifier Based on FPGA

This paper introduces an over-modulation technique, a continuous extension of space vector PWM (SVPWM) linear control scheme for the three-phase current source rectifier (CSR). By judging the magnitude of active current vectors durations, this technique can select the current vectors in sectors and modify their active durations. It is neither necessary to store a lot of data in advance nor needs complex calculation strategy, which is very suitable to a digital implementation based on field programmable gate array (FPGA). The over-modulation scheme can extend the dc output voltage range of three-phase CSR, useful in improving the dynamic response and fulfilling the specific load demands. The simulations and experiments prove that the produced scheme not only has good dynamic and static performances, but also can keep the power factor at unity in a wide range of output dc voltage and the input current harmonic THD is very low.

[1]  R. S. Kanchan,et al.  Space vector PWM signal generation for multilevel inverters using only the sampled amplitudes of reference phase voltages , 2005 .

[2]  Dong-Choon Lee,et al.  A novel overmodulation technique for space vector PWM inverters , 1997 .

[3]  G. Cho,et al.  Modeling and analysis of static and dynamic characteristics for buck-type three-phase PWM rectifier by circuit DQ transformation , 1998 .

[4]  Zhang Chun-jiang.  MATHEMATICAL MODEL OF THREE-PHASE PWM RECTIFIER BASED ON A NOVEL PHASE AND AMPLITUDE CONTROL , 2003 .

[5]  Hua Yang.  A NOVEL ALGORITHM OF SVPWM INVERTER IN THE OVERMODULATION REGION BASED ON FUNDAMENTAL VOLTAGE AMPLITUDE LINEAR OUTPUT CONTROL , 2005 .

[6]  Liu Jun,et al.  A novel fundamental voltage amplitude linear output control strategy of SVPWM inverter in the overmodulation region , 2005, 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005..

[7]  Joachim Holtz,et al.  High-performance current regulation and efficient PWM implementation for low-inductance servo motors , 1999 .

[8]  Mehrdad Kazerani,et al.  Modeling, control and implementation of three-phase PWM converters , 2003 .

[9]  Zhang Zhong-chao.  MULTI-PWM PULSE GENERATOR BASED FPGA , 2005 .

[10]  Dong-Choon Lee,et al.  A novel overmodulation technique for space vector PWM inverters , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[11]  Yu Fei.  A Zero Sequence Offset Time Based Low Loss and High Performance PWM Control Method , 2005 .

[12]  Yoshitaka Iwaji,et al.  Introduction of the Harmonic Distortion Determining Factor and Its Application to Evaluating Real Time PWM Inverters , 1995, IEEE Transactions on Industry Applications.

[13]  Liu Zheng-zhi.  CONTROL AND ANALYSIS OF HIGH-POWER CURRENT SOURCE MULTI-CONVERTER POWER SYSTEM , 2004 .

[14]  Shi Jie.  A STUDY ON THEORYAND APPLICATION OF DIGITAL NATURAL SAMPLING BASED SPWM , 2005 .

[15]  Wang Jiu-he.  A NEW DIRECT POWER CONTROL STRATEGY OF THREE PHASE BOOST TYPE PWM RECTIFIERS , 2005 .

[16]  G. Venkataramanan,et al.  A unity power factor three phase PWM SCR rectifier for high power applications in the metal industry , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[17]  Bin Wu,et al.  A PWM current-source rectifier with active damping for high power medium voltage applications , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).