Reduced switching frequency computed PWM method for multilevel converter control

被引:8
作者
Du, Z [1 ]
Tolbert, LM [1 ]
Chiasson, JN [1 ]
机构
[1] Univ Tennessee, Knoxville, TN 37996 USA
来源
2005 IEEE 36TH POWER ELECTRONIC SPECIALISTS CONFERENCE (PESC), VOLS 1-3 | 2005年
关键词
multilevel converter; harmonic elimination; computed PWM control;
D O I
10.1109/PESC.2005.1581993
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper presents two computed PWM methods for 11-level multilevel converters to eliminate the specified harmonics in the output voltage to decrease total harmonic distortion (THD). The first method uses the fundamental switching scheme to eliminate low order harmonics, and uses the active harmonic elimination method to eliminate higher order harmonics. The second method uses these schemes in the reverse order, the fundamental switching scheme to eliminate higher order harmonics, and the active harmonic elimination method to eliminate low order harmonics. The computational results show that the difference between the THD of the two methods is small, but the second method has lower switching frequency. An experimental 11-level H-bridge multilevel converter was used to implement the algorithm and to validate the two computed PWM methods. The experimental results show that the two methods can effectively eliminate the specific harmonics as expected, while the second method results in a significantly lower switching frequency.
引用
收藏
页码:2560 / 2564
页数:5
相关论文
共 21 条
[1]  
Carrara G., 1992, IEEE Transactions on Power Electronics, V7, P497, DOI 10.1109/63.145137
[2]  
Chiasson JN, 2003, IEEE IND APPLIC SOC, P640
[3]   Control of a multilevel converter using resultant theory [J].
Chiasson, JN ;
Tolbert, LM ;
McKenzie, KJ ;
Du, Z .
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 2003, 11 (03) :345-354
[4]  
Du Z, 2004, IEEE IND APPLIC SOC, P2210
[5]  
DU Z, 2004, IEEE APPL POW EL C M, P419
[6]   PROGRAMMED PWM TECHNIQUES TO ELIMINATE HARMONICS - A CRITICAL-EVALUATION [J].
ENJETI, PN ;
ZIOGAS, PD ;
LINDSAY, JF .
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1990, 26 (02) :302-316
[7]   A new approach to enhance power quality for medium voltage AC drives [J].
Hammond, PW .
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1997, 33 (01) :202-208
[8]  
HILL WA, 1999, IEEE IND APPL SOC AN, P1186
[9]  
Holmes DG, 1995, IEEE IND APPLIC SOC, P2451, DOI 10.1109/IAS.1995.530615
[10]   Sequential homotopy-based computation of multiple solutions for selected harmonic elimination in PWM inverters [J].
Kato, T .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS, 1999, 46 (05) :586-593