摘要控制交流电压往往涉及改变幅度、相位和电压的谐波分量，这需要在电压过
零点处及附近添加交流电压。额外电压的复合，通常需要交流或者直流源，采用
脉冲宽度调制技术实现。本文运用了一种新型的电压复合控制技术，利用最简单
的交流斩波器拓扑，采用双虚拟正交电压源来合成所需的电压。此种电压复合控
制技术，采用较少的元器件，不需要多余的电压源或储能元件，便可实现相移及
谐波分量控制。这种控制技术，可以应用于简单而有潜力的产品开发中，比如可
控变压器和逆变器的有源滤波器等。5154
关键词 脉宽调制技术 交流斩波器 电压复合 滤波器
Title Voltage Synthesis in AC Power Conversion
Abstract
Controlling an ac voltage often involves changing the amplitude ,Phase,
and harmonic content of the voltage. This can require the additionOf
voltage at or around the zero crossing of the available ac voltage.
Synthesis of this addition voltage normally requires an ac or dc source
from which the desired voltage can be synthesized using pulsewidth mod-
ulation techniques. This paper proposes a novel concept wherein dual vir-
tual quadrature sources are used to synthesize the required additional
voltage. This is seen to result in simple low-cost ac converters that are
robust, have minimal component count ,and can realize phase shift and
harmonic control without requiring multiple sources or energy-storage
elements. The approach is seen to have simple implementation and can re-
alize potentially useful devices such ac controllable transformers and
inverter-less active filters.
Keywords Pulsewidth modulation techniques(PWM), AC buck chopper ,Voltage
Synthesis ,active filters.
目录
1 绪论............................................................. 1
1．1 交流变换系统概况.............................................. 1
1. 2 交流变换系统的拓扑族.......................................... 1
1．3 交流变换系统的发展前景........................................ 2
1．4 交流变换系统的控制技术........................................ 2
1.4.1 硬件技术..................................................... 3
1.4.2 控制方案综述................................................. 3
1．5 本文主要工作.................................................. 5
2 交流变换系统中新型电压复合技术的概念.............................. 7
2．1 新型电压复合技术的概念提出背景............................... 7
2．2 新型电压复合技术的工作原理................................... 9
3 交流斩波器的应用研究............................................ 13
3．1 交流斩波器的电路结构与工作原理.............................. 13
3．2 传统的控制策略............................................... 15
3．3 仿真与实验................................................... 16
3.3.1 仿真参数设计................................................ 16
3.3.2 仿真波形.................................................... 17
4 新型电压复合技术在交流斩波器中的应用............................. 19
4．1 应用理论分析................................................. 19
4．2 交流斩波器的新型电压复合技术开环控制......................... 19 交流变换系统中的电压复合技术研究+文献综述:http://www.751com.cn/zidonghua/lunwen_2096.html