| 三相ZVS逆变器磁链轨迹 |
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| 引用本文： | 陈国呈,许春雨,孙承波,屈克庆.三相ZVS逆变器磁链轨迹[J].上海大学学报(英文版),2005,9(6):521-526. |
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| 作者姓名： | 陈国呈 许春雨 孙承波 屈克庆 |
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| 作者单位： | [1]School of Electromechanical Engineering and Automation, Shanghai University, Shanghai 200072, P.R. China [2]Shanghai Key Laboratory of Power Station Automation Technology, Shanghai 200072, P.R. China [3]Osaka Institute of Technology, Osaka 535-8585, Japan |
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| 基金项目： | Project supported by Shanghai Leading Academic Discipline Project （Grant No.T0103）, and Shanghai Post Doctoral Scientific Research Project （ Grant No. 05R214122） |
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| 摘 要： | ZVS（zero voltage switching） PWM（pulse width modulation） inverters have attracted much attention recently. The basic idea is to use ZVS circuit as the main circuit of inverter resonance at the beginning of every carrier period so that each power device can commutate when voltage of the main circuit＇s DC bus line is zero. To ensure the resonant circuit to operate properly, sawtooth with alternate slope （positive or negative） is used as carrier. But the time of zero voltage vectors with such PWM pattern is greatly different from traditional hard-switching PWM pattern. This paper discusses the locus of flux linkage under soft-switching PWM pattern by using space voltage vector. It is pointed out that, under the hard-switching PWM pattern, speed of flux linkage is adjusted by zero space voltage vector. When soft-switching PWM pattern is used, however, effective time of space voltage vector varies considerably, sometimes even without zero space voltage vector. Therefore non-zero space voltage vector has been used to make the speed of flux linkage locus equal to that of hard-switching PWM pattern. The cause of current distortion in soft-switching PWM inverters is also discussed. Based on the flux linkage locus circle, corresponding compensation methods are proposed. Experimental results show that the described method can effectively improve output current waveform of inverter.
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| 关 键 词： | 三相ZVS逆变器 磁链轨迹 零电压交换 脉冲宽度调制 空间电压相量 |
| 文章编号： | 1007-6417（2005）06-0521-06 |
| 收稿时间： | 2004-09-01 |
Locus of flux linkage for three-phase ZVS inverter |
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| Chen?Guo-cheng,Xu?Chun-yu,Sun?Cheng-bo,Qu?Ke-qing,Taniguchi?Katsunori.Locus of flux linkage for three-phase ZVS inverter[J].Journal of Shanghai University(English Edition),2005,9(6):521-526. |
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| Authors: | Chen Guo-cheng Xu Chun-yu Sun Cheng-bo Qu Ke-qing Taniguchi Katsunori |
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| Institution: | 1. School of Electromechanical Engineering and Automation, Shanghai University, Shanghai 200072, P.R. China;Shanghai Key Laboratory of Power Station Automation Technology, Shanghai 200072, P.R. China
2. Osaka Institute of Technology, Osaka 535-8585, Japan |
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| Abstract: | ZVS(zero voltage switching) PWM(pulse width modulation) inverters have attracted much attention recently. The basic idea is to use ZVS circuit as the main circuit of inverter resonance at the beginning of every carrier period so that each power device can commutate when voltage of the main circuit's DC bus line is zero. To ensure the resonant circuit to operate properly, sawtooth with alternate slope (positive or negative) is used as carrier. But the time of zero voltage vectors with such PWM pattern is greatly different from traditional hard-switching PWM pattern. This paper discusses the locus of flux linkage under soft-switching PWM pattern by using space voltage vector. It is pointed out that, under the hard-switching PWM pattern, speed of flux linkage is adjusted by zero space voltage vector. When soft-switching PWM pattern is used, however, effective time of space voltage vector varies considerably, sometimes even without zero space voltage vector. Therefore non-zero space voltage vector has been used to make the speed of flux linkage locus equal to that of hard-switching PWM pattern. The cause of current distortion in soft-switching PWM inverters is also discussed. Based on the flux linkage locus circle, corresponding compensation methods are proposed. Experimental results show that the described method can effectively improve output current waveform of inverter. |
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| Keywords: | inverter ZVS space voltage vector flux linkage locus |
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