switch loss造句
例句与造句
- But the increase of switching frequency results in higher switching loss
而传统变换器开关频率的提高必然带来开关损耗的增加。 - But the switching loss is increased as the switching frequency is improved and so the converter efficiency is decreased
但随着开关频率的提高，硬开关的开关损耗增加，变换器的工作效率随之下降。 - The voltage peak and switching loss during switching of inverter is the main cause that due to the damage of igbt
逆变桥电路开关过程中出现的电压尖峰和大的开关损耗是导致主开关器件igbt损坏的主要原因之一。 - For increasing the switching frequency and reducing switching losses and emi noise of the pfc circuits , soft - switching technologies are adopted
在功率因数校正变换器中采用软开关变换技术可以使开关频率提高、降低开关损耗、并有效抑制emi 。 - However , the h - bridge maglev chopper has serious switching losses , so as to have snubber circuit ; there is high emi with the chopper
然而, h -桥斩波器开关损耗大,需要添加缓冲网络,电磁干扰十分严重;对供电电源有反向电流冲击,容易造成供电电源和滤波电容的损坏。 - It's difficult to find switch loss in a sentence. 用switch loss造句挺难的
- With this method , the minimum switching losses can be reached , and the maximum switching current can be reduced effectively . so this method can meet the requirement of hvdc - vsc where lower switch loss is emphasized
这种方法开关损耗最小，并可有效降低开关器件的最大开关电流，适应了hvdc - vsc降低开关损耗的需要。 - First of all , the main - switches of the zvs chopper have zero - voltage turn - on and turn - off totally , so it has little switching losses . for this , the efficiency of the chopper can be improved
首先,零电压软开关斩波器的主功率器件完全实现了零电压开通和关断,所以它的热损耗很小,减小了系统的热损耗,提高了系统的电源变换效率。 - For the limitations of traditional pwm hard switching circuit , a kind of zero of pair soft switching technology is introduced and the switching loss can be cut down by it and the reliability of inverter in case of high frequency can be improved also
由于传统pwm硬开关电路的局限性，本文采用一种双零谐振型软开关技术降低开关损耗以及在高频情况下提高整机的可靠性。 - The theoretical analysis and result of simulation indicate that the two - phase modulation reduces the switching losses 50 % relative to the quasi - optimum and the space vector modulation and overmodulation can generate higher voltages with low total harmonic distortion
分析表明二相调制方法相对于准优化方法减少开关损耗近30 ，空间矢量的调制与过调制可以大大的提高直流母线电压的利用率。 - The inverters based on space - vector pwm technique have many good qualities , such as less pulsating torque , higher usage of dc bus voltage , less switching loss , better high - speed regulation performance , so it is applicable for the high - performance motor control system
电压空间矢量pwm技术( svpwm )将逆变器和电动机视为一体，由之控制的变频器具有输出转矩脉动量低、直流电压利用率高、开关损耗小、高速调速性能好等优点，适用于高性能电机调速控制系统。 - The system had auto startup and stop function by software . the dsp based motor control system had lower current harmonic , more efficient use of supply voltage than spwm , less switch loss . on the other hand , this system make a lower noise for the pwm modulation . frequency is up to 20khz
本系统实现了电机的软启动、软关断功能，电机电流的谐波失真较少，电压利用率比常规的正弦波脉冲宽度调制( spwm )有了较大的提高，器件的开关损耗也得到了明显的减少。 - Harmonic components of the input current in method 2 is lesser than method 1 , neglecting the losses and switching effects of the converter . the decreation of the harmonic components is not apparent , but different between method 2 and method 1 , due to the influence of switch losses of the igbt , which is consisted of two igbt and two frd
当仿真模型中的双向开关由两个igbt和两个快恢二极管组成时，由于igbt的开关损耗等因素对输入电流的影响，在仿真得到的输入电流频谱图中，谐波成分的减小不是很明显，但调制策略方式2和方式1的谐波成分仍有所不同。 - In this part , the high - frequency series inverter with resonant pole capacitor is introduced mainly . the current - exchanging processes of the inverter in different working modes are analyzed , how to reduce the switching loss is discussed , and the calculating methods of snubber capacitor c , factor angle switching frequency and pulse width pw are given in optimum switching process . and results of simulation and experiment verify the validity of theoretic analysis
接着重点研究了含有谐振极无损缓冲电容的逆变器，对其换流过程中的不同工作状态进行分析，讨论了如何减小逆变器的开关损耗，给出了最佳工作状态下缓冲电容c 、感性角、开关频率、触发脉冲的脉宽pw的详细计算方法，并通过大量的仿真和实验波形证明了理论分析的正确性。 - Switching loss and efficiency of the proposed resonant pole zvt three - phase pwm inverter are analyzed and discussed . results of calculation and testing of the prototype together with a hard - switching inverter with the same specification show that an improvement of 2 % ~ 3 % is obtained . based on the analysis of drawbacks of existing svpwm technique in resonant pole zvt three - phase pwm inverters , several improved svpwm methods are presented
对提出的谐振极零电压过渡三相pwm逆变器的开关损耗和工作效率，进行了深入的分析和讨论，并针对原理样机进行了理论计算和实际测量，并与相同规格的硬开关三相逆变器进行了对比研究，结果表明，采用提出的软开关技术的原理样机的效率可以提高2 % 3 。 - Switching losses analysis indicates that the switching losses can be extremely reduced with different load qualities by choosing proper phase - voltage modulation method . the method of minimum switching losses svm is investigated . the modulation functions of a quasi - optimum method and a two - phase modulation method are given
本文深入研究了一种基于电压空间矢量的最小开关损耗pwm技术，给出了准优化方法和二相优化方法的相电压调制函数，并在理论分析的基础上，通过仿真实验，对两种减少开关损耗的方法和调制与过调制进行了分析。
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