三相电压源逆变器方波调制算法分析
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摘要
在本科生"电力电子技术基础"课程中,三相电压源逆变器(VSI)的方波调制算法属于重要内容,教材中一般只涉及120°导电型和180°导电型方波调制算法。本文从通用角度,系统地分析120°-180°导电型方波调制,包括VSI输出相电压、VSI输出线电压、负载相电压的电平数、阶梯数、波形系数和总谐波畸变率(THDv)等指标,结果表明,150°导电型方波调制算法具有优势,表现为负载相电压波形的阶梯数最多,THDv最小。本论文内容有助于学生更加清晰和全面地掌握VSI的方波调制算法与阶梯波形合成原理,为后续学习VSI高频PWM高频波形合成原理打下基础。
Square wave modulation algorithm of three-phase voltage source inverters(VSI) is an important part of undergraduate course "Power Electronics Technology Basis". In general textbooks, only 120° and/or 180°square wave modulation algorithms are involved. From a general point of view, this paper systematically analyses the 120°—180° conductive square wave modulation algorithm, which involves the output phase voltage of inverter,the output line voltage of inverter, the level number of load phase voltage, step number, waveform factor, total harmonic distortion rate(THDv) and other parameters. The analysis results show that 150° conductive square wave modulation algorithm has advantages, and the number of level and step of load phase voltage waveform is the most.And THDv is the smallest. The contents in this paper is helpful for students to grasp the square wave modulation algorithm and step waveform synthesis principle of voltage source inverters more clearly and comprehensively, and lay a foundation for the subsequent study of VSI PWM high frequency waveform synthesis principle.
Square wave modulation algorithm of three-phase voltage source inverters(VSI) is an important part of undergraduate course "Power Electronics Technology Basis". In general textbooks, only 120° and/or 180°square wave modulation algorithms are involved. From a general point of view, this paper systematically analyses the 120°—180° conductive square wave modulation algorithm, which involves the output phase voltage of inverter,the output line voltage of inverter, the level number of load phase voltage, step number, waveform factor, total harmonic distortion rate(THDv) and other parameters. The analysis results show that 150° conductive square wave modulation algorithm has advantages, and the number of level and step of load phase voltage waveform is the most.And THDv is the smallest. The contents in this paper is helpful for students to grasp the square wave modulation algorithm and step waveform synthesis principle of voltage source inverters more clearly and comprehensively, and lay a foundation for the subsequent study of VSI PWM high frequency waveform synthesis principle.
引文
[1]金如麟,谭茀娃.电力电子技术基础[M].上海:上海交通大学出版社,2001年.
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[6]Ericks on,Robert W.Fundamentals of Power Electronics[M].Second Edition.Secaucus,NJ,USA.Kluwer Academic Publishers,2000.
[7]B.R.Pelly著,杨启元等译.可控硅相控变流器及变频器(Thyristor Phase-controlled Converters and Cycloconverter)[M].北京:冶金工业出版社,1981年8月第一版.
[8]L.Gyugyi,B.R.Pelly著,王孝祥等译.静止功率变频器(Static Power Frequency Changers)[M].北京:冶金工业出版社,1988年9月第一版.
[9]莫汉(Mohan,N),冯德兰德(Vandeland,T.),罗宾斯(Robbins,W.P.).电力电子学:变换器、应用和设计(第3版,影印版)(Power Electronics Converters Applications and design.)[M].北京:高等教育出版社,2004年.
[10]马红星,李华武,杨喜军.三相电压源逆变器三种方波调制算法的仿真分析(上)[J].变频器世界,2012(8):66-71104,2012年09月.
[11]马红星,李华武,杨喜军.三相电压源逆变器三种方波调制算法的仿真分析(下)[J].变频器世界,2012(9):75-80,2012年09月.
[2]王兆安,刘进军.电力电子技术(第五版)[M].北京:机械工业出版社.2009年7月.
[3]张占松,蔡宣三.开关电源原理与设计[M].北京:电子工业出版社,1998年7月.
[4]丁道宏.功率电子学[M].南京:南京航空航天大学出版社,1995年1月第一版.
[5]吴守箴,臧英杰.电气传动的脉宽调制技术[M].北京:机械工业出版社,1995年1月第1版.
[6]Ericks on,Robert W.Fundamentals of Power Electronics[M].Second Edition.Secaucus,NJ,USA.Kluwer Academic Publishers,2000.
[7]B.R.Pelly著,杨启元等译.可控硅相控变流器及变频器(Thyristor Phase-controlled Converters and Cycloconverter)[M].北京:冶金工业出版社,1981年8月第一版.
[8]L.Gyugyi,B.R.Pelly著,王孝祥等译.静止功率变频器(Static Power Frequency Changers)[M].北京:冶金工业出版社,1988年9月第一版.
[9]莫汉(Mohan,N),冯德兰德(Vandeland,T.),罗宾斯(Robbins,W.P.).电力电子学:变换器、应用和设计(第3版,影印版)(Power Electronics Converters Applications and design.)[M].北京:高等教育出版社,2004年.
[10]马红星,李华武,杨喜军.三相电压源逆变器三种方波调制算法的仿真分析(上)[J].变频器世界,2012(8):66-71104,2012年09月.
[11]马红星,李华武,杨喜军.三相电压源逆变器三种方波调制算法的仿真分析(下)[J].变频器世界,2012(9):75-80,2012年09月.