IJSER Home >> Journal >> IJSER
International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 10    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 10, October 2011 Edition
Achieving Zero Common Mode Voltage and Improved Linearity Relationship by a Novel Modulation Method
Full Text(PDF, 3000)  PP.  
Author(s)
Nasim Rashidirad, Abdolreza Rahmati, Adib Abrishamifar
KEYWORDS
Common mode voltage, Multilevel modular inverter, Modulation, Linearity, THD
ABSTRACT
This paper proposed a new modulation strategy to eliminate common mode voltages in multilevel inverters. In this scheme which is explained for a 5-level modular inverter, all voltage vectors with zero common mode voltages can be classified into four categories and each two adjacent categories composed a segment. Synthesized voltage vectors that are an approximation to the reference vector belong to the segment in which the reference vector lies. Dwell times of these voltage vectors, depend on the distance between reference vector and the voltage vectors. This scheme leads to a good linearity relationship and low total harmonic distortion.
References
[1] Jose Rodriguez, Jorge Pontt, Pablo Correa, Patricio Cortes, Cesar Silva, “A New Modulation Method to Reduce Common-Mode Voltages in Multilevel Inverters”, IEEE TRANSACTIONS ON INDUSTRY ELECTRONICS, VOL.51, NO.4, AUGUST 2004.

[2] Shaotang Chen, Thomas A.lipo, Dennis Fitzgerald, “Modeling of Motor Bearing Currents in PWM Inverter Drives”,IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 32, NO. 6, NOVEMBER/ DECEMBER 1996.

[3] “Don’t Lose Your Bearings, Mitigation techniques for bearing currents in inverter-supplied drive systems”, IEEE INDUSTRY APPLICATIONS MAGAZINE, JULY/AUG 2006.

[4] Wenix Yao, Haibing Hu, Zhengyu Lu, “ Comparsions of Spacevector Modulation and Carrier-Based Modulation of Multilevel Inverter”, IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 1, JANURAY 2008.

[5] Haoran Zhang, Annette von Jouanne, Shaoan Dai, Alan K.Wallace, Fei Wang, “Multilevel Inverter Modulation Schemes to Eliminate Common-Mode Voltages”, IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 36, NO. 6, NOVEMBER / DECEMBER 2000.

[6] Shaotang Chen, Thomas A.lipo, Dennis Fitzgerald, “Modeling of Motor Bearing Currents in PWM Inverter Drives”, IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL.32, NO. 6, NOVEMBER/DECEMBER 1996.

Untitled Page