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carrier-based pwm
    RELATIONSHIP BETWEEN MULTILEVEL CARRIER-BASED PWM AND SVPWM AND ITS APPLICATIONS
    多电平载波PWM法与SVPWM法之间的本质联系及其应用
    MULTILEVEL INVERTER CARRIER-BASED PWM METHOD BASED ON CONTROL DEGREES OF FREEDOM COMBINATION
    基于控制自由度组合的多电平逆变器载波PWM控制方法
    Carrier-Based PWM Method With Voltage Balance for Flying Capacitor Multilevel Inverter
    飞跨电容多电平逆变器的新型载波PWM方法
    In chapter 4, the principle of carrier-based PWM control schemes for the three-level NPC inverter is discussed.
    第四章针对二极管箝位(NPC)三电平逆变器,详细研究了载波PWM控制策略。
    A novel carrier-based PWM method utilizing control freedom degree (CFD) is proposed. The principle, simulation and DSP implementation of the method are discussed in detail.
    基于分析的结果,提出了一种新的载波PWM控制方法,并详细讨论了这种方法的原理,仿真及DSP数字实现。
    Compared with the traditional carrier-based PWM method, the novel method shows better harmonic characteristic under low modulation indices, while under a high modulation index, the harmonic characteristic of the novel method is almost the same as that of the traditional method.
    该方法根据控制自由度的概念,通过对载波以及调制波控制自由度的合理组合,具有以下优点:1)在低调制度下,输出线电压的谐波特性(THD)远远优于传统的载波PWM控制方法,在高调制度下,输出线电压的谐波特性(THD)与传统的载波PWM控制方法相当;
    The hybrid frequency carrier-based PWM control strategy adapted to hybrid power cells is presented in this paper based on the analysis of hybrid seven-level power conversion principle.
    该文在分析混合七电平逆变电路工作原理的基础上,提出了一种适合混合功率单元的混合频率载波PWM调制法。
    The operating modes of multilevel cascaded inverters are analyzed and several PWM control techniques are introduced in the paper. A six-cell cascaded multilevel inverter using three multilevel PWM control techniques are investigated as an example. It is pointed out that multilevel carrier-based PWM technique is the best for the PWM control of multilevel cascaded inverters since dv/dt of the output voltage waveform is small and total harmonics distortion is low.
    本文分析了逆变单元多电平串联结构逆变单元的工作模式 ,介绍了几种常用的PWM控制方法 ,以六单元串联多电平逆变器为例对其中三种多电平PWM方法进行了比较研究 ,从中得出多电平载波PWM控制方法输出电压波形dv dt较小 ,总谐波含量也较低 ,最适合用于单元串联多电平逆变器的PWM控制。
    The experiment has been taken to prove those theories,and the result is exactly consistent with the theory analysis. Meanwhile,the modulation signal and zero-sequence signal of SVPWM have been gotten in experiment directly. So,the SVPWM technique is equivalent with the carrier-based PWM techniques and has its corresponding carrier modulation signal.
    在实验中直接获得了三相SVPWM载波调制形式的调制信号波形与零序信号波形,经验证,实验结果与理论分析完全一致,因此SVPWM技术与载波PWM技术在本质上是统一的,并具有相应的载波调制形式。
    In particular,the general relationship between the zero-vector partitioned way and all continuous and discontinuous SVPWM methods is embodied in a modulation function formula,so it is revealed that SVPWM is a zero-sequence signal injection carrier-based PWM in effect.
    特别是将零矢量分配方式与各种SVPWM连续调制和不连续调制之间的关系统一于一个调制函数表达式中,从而揭示出SVPWM实质上是一种零序分量注入式载波PWM
 

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