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载波pwm
相关语句
  carrier-based pwm
     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
短句来源
     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
短句来源
     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
短句来源
     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。
短句来源
     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
短句来源
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  carrier pwm
     Study on the Equivalence of SVPWM and Carrier PWM based on LF2407A
     基于LF2407A的SVPWM与载波PWM统一研究
短句来源
     Generally, multilevel PWM strategies include three types of methods: multilevel Carrier PWM, multilevel Space Vector PWM and Optimal PWM.
     按照目前的发展情况,多电平PWM控制方法一般有多电平载波PWM方法、多电平空间矢量PWM方法,以及其他优化的PWM方法。
短句来源
     Generally,multi-level PWM strategies include three types of methods:multi-level Carrier PWM,multi-level Space Vector PWM and Optimal PWM.
     按照目前的发展情况,多电平PWM控制方法一般有多电平载波PWM方法、多电平空间矢量PWM方法,以及其他优化的PWM方法。
短句来源
     Its performance is greatly improved than that of the conventional phase-shifted carrier PWM method (PSPWM), especially under low modulation index region.
     和传统的相移载波PWM方法相比,该方法的谐波性能得到了很大的提高,尤其是在低调制度下。
短句来源
     High power voltage source converters for Superconductive Magnetic Energy Storage(SMES) are introduced and compared according to the researching situation. Several control strategies for converters based on carrier PWM and non-carrier PWM technologies such as phase-shift and sliding mode control are introduced as well,which are greatly different in principles.
     根据超导储能系统的研制现状,阐述了超导储能系统中大功率换流器技术的发展,比较了近年来采用的电压型大功率变换流电路的优缺点以及控制方式,并在此基础上分析了基于载波调制的相移PWM技术和基于非载波PWM的滑模控制技术的不同控制特点。
短句来源
  “载波pwm”译为未确定词的双语例句
     This paper analyzes the neutral-point balancing problem of three-level Neutral Point Clamping(NPC) inverter,and discusses the injected zero-sequence voltage PWM method for neutral-point balancing control.
     分析了三电平中点箝位(Neutral Point Clamping,简称NPC)逆变器的中点电位平衡问题,讨论了通过注入零序电压实现中点电位控制的载波PWM方法,并在此基础上对一种实时控制中点电位平衡的方法进行了改进,提出一种基于零序电压注入的载波交叠PWM方法。
短句来源
     The principle of HITACHI HIVECTOL - VSI - M vector control system and double - carrier PWM technology is explained.
     阐述了日立HIVECTOL—VSI—M矢量控制系统的基本控制原理及双重载波PWM技术;
     1. To overcome the low voltage modulation index and low fundamental component, a novel suboptimal PWM technique (MSUBPWM) applicable to multilevel voltage inverter is presented.
     1.针对多电平载波PWM技术中电压调制深度低和基波幅值小的问题,提出了多电平准最优PWM法,分析了输出最大电压调制深度、基波幅值和谐波畸变率等,并进行了计算机仿真。
短句来源
     On PWM Inverter Technique with a Vibrato Carrier
     颤音载波PWM逆变技术研究
短句来源
     Triangle carrier wave PWM control method is adopted in the thesis, and the running process of unipolar PWM control method is analyzed.
     本文的控制方式采用三角载波PWM方法,分析了单极性PWM法的工作过程。
短句来源
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  carrier-based pwm
For sending pulses to the APF gates, we employed the carrier-based PWM strategy.
      
However, the overmodulation characteristics of many other carrier-based PWM methods have not been explored, nor has a comparative study been reported.
      
In this paper we applied the carrier-based PWM having the control law described in Figure 7.
      
  carrier pwm
A second advantage is that carrier PWM can be applied to almost any type of RF PA.
      
The waveform observed when the 20-kHz carrier PWM values were converted to a sine wave by the RC low-pass filter.
      
The result when 4-kHz carrier PWM values were converted to a sine wave using the same low-pass filter.
      


Multilevel converters are a novel kind of converters used in high voltage and high power application field. And its corresponding topology and PWM method are two research hot points. According to state of the art,it is a reasonable selection that using a cascaded multilevel converter topology controlled by triangle carried based PWM, when voltage level is more than three. Based on this point of view, the paper discusses three existing kinds of triangle carrier based PWM strategies firstly. Their principle,...

Multilevel converters are a novel kind of converters used in high voltage and high power application field. And its corresponding topology and PWM method are two research hot points. According to state of the art,it is a reasonable selection that using a cascaded multilevel converter topology controlled by triangle carried based PWM, when voltage level is more than three. Based on this point of view, the paper discusses three existing kinds of triangle carrier based PWM strategies firstly. Their principle, advantages and disadvantages are compared each other. Then a new kind of PWM strategy is presented, which is suitable for cascade multilevel converters. In order to compare the control effects of them, some simulations have been done by Saber simulation software. The simulation results show the proposed PWM method has many advantages of the three kinds of PWM method mentioned above, especially in output voltage harmonic and voltage utility ratio aspects. In the last part of the paper, some suggestions on future research are given.

多电平变换器作为一种应用于高压大功率变换场合的新型变换器 ,其相应的电路拓扑结构和PWM控制方法是当前的一个研究热点 ,基于现有的研究成果 ,该文认为当电平数超过 3时 ,采用级联型电路拓扑结构和三角载波PWM法的组合 ,是一种较为可行的方案。在此基础上 ,首先讨论了三种已有的多电平变换器三角载波PWM控制方法 ,根据它们各自的优缺点 ,提出了一种新型的适用于级联型多电平变换器的PWM方法。文中介绍了它们的原理和特点 ,为了比较它们的控制效果 ,采用功能强大的Saber软件进行了仿真研究 ,仿真结果表明 ,所提出的方法 ,在输出电压谐波和电压利用率方面 ,兼具前三种方法的优点。最后 ,作者对今后的研究提出了建议。

The correlation between the carrier-based PWM and SVPWM in three level inverters is estab-lished, based on theory analysis, which is analogous with that of two level. According to the correlation, the two level switch-ing loss minimized PWM(SLMPWM) method is extended to the three level inverters. The neural point voltage unbalance problems which are the inherent of three level inverters are solved successfully in this method by some special means. The simulation and experimental results show the proposed method...

The correlation between the carrier-based PWM and SVPWM in three level inverters is estab-lished, based on theory analysis, which is analogous with that of two level. According to the correlation, the two level switch-ing loss minimized PWM(SLMPWM) method is extended to the three level inverters. The neural point voltage unbalance problems which are the inherent of three level inverters are solved successfully in this method by some special means. The simulation and experimental results show the proposed method is feasible and suitable for high power three level inverters.

在理论分析的基础上建立了三电平三角载波PWM法和空间电压矢量PWM法之间的本质联系,其关系完全类似于两电平中两者之间的关系,以此为依据,可将两电平开关损耗最小PWM法推广应用于三电平,并最终实现了三电平开关损耗最小和中点电压平衡的协调控制。

The harmonics in HVDC converter station analysed, a shunt active filter is presented. The shunt active filter detects the harmonics using instantaneous reactive power theory, keeps constant capacitor voltage by PI control algorithms, and keeps output current tracing the ideal current by utilizing the high-frequency carrier PWM modulation technique. The MATLAB simulation of the active filter scheme is carried out. The simulation results demonstrate the effectiveness of the active filter technique on AC side of...

The harmonics in HVDC converter station analysed, a shunt active filter is presented. The shunt active filter detects the harmonics using instantaneous reactive power theory, keeps constant capacitor voltage by PI control algorithms, and keeps output current tracing the ideal current by utilizing the high-frequency carrier PWM modulation technique. The MATLAB simulation of the active filter scheme is carried out. The simulation results demonstrate the effectiveness of the active filter technique on AC side of HVDC converter station.

对高压直流输电系统交流侧产生的谐波进行分析,并针对高压直流输电系统交流侧产生的谐波的特点提出了一种并联有源滤波方案,该有源滤波器采用瞬时无功功率理论进行谐波检测,通过PI控制维持电容电压的稳定,采用高频载波PWM脉宽调制技术使实际输出电流信号跟踪指令电流信号.最后对该有源滤波方案进行了动态模拟仿真,仿真结果表明,该有源滤波方案对高压直流输电系统直流侧产生的谐波的滤除是非常有效的,能够得到理想的结果.

 
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