零电流开关 meaning in English
zero current switch
Examples
- A novel resonant pole zvt three - phase pwm inverter circuit for three - phase ac motor driving is presented . the proposed circuit has the feature of being more flexible with three inverter arms in zvt process . using only one resonant inductance , the inverter can not only reduce the power loss of inductance but also avoid possibility of unbalance in motor ' s three stator windings
提出了一种针对三相交流电机驱动的新型谐振极零电压过渡三相pwm逆变器电路，该电路中三个逆变桥臂的零电压过渡更具有灵活性，仅使用一个谐振电感，既减少了电感损耗又防止了电机三相定子绕组可能存在的不平衡问题，并且谐振电感中残余能量能够回馈给电源；新型逆变器的辅助开关均工作在零电流开关条件下，并且控制逻辑简单。 - The principle and application of zero current switching boost pfc circuit are given . by introducing the development of ac / dc module with pfc the key techniques of the module are stressed on the engineering design . some problems are resolved such as the module is so small that spread the hot difficulty
从理论上分析和研究了零电流开关升压式pfc电路的原理和应用，并结合250w带pfc电路ac dc模块的研制，从工程设计角度重点阐述了该模块的关键技术，解决了模块体积小、散热困难及工艺等方面的难题。 - A novel high - power pollution - free smps is presented in this paper , which accomplishes simultaneously the goal of soft - switching pwm , the input / output isolation , the output voltage regulation and three - phase pfc with a single - stage power processor and simple pseudo - phase - shift control circuit . therefore , compared with the normal two - stage system , the single - stage power supply has simpler structure , lower cost , higher efficiency and easier to control . the proposed smps can be used in the three - phase power system , and can output high power over kw - order and input / output ( i / o ) isolation dc power supply
本文提出的新型无污染大功率开关电源正是采用三相三线制输入电源，利用单级伪相移零电压零电流开关脉宽调制( pps - zvzcs - pwm )全桥变换器完，成功率因数校正( pfc )和输出电压快速调节、隔离的双重功能，并且该变换器开关管在零电压或零电流下通断，显著的减小了emi 。 - " soft switching " is zero voltage switching or zero current switching , which the voltage ( or current ) of the switch varies by law of sine or quasi sine , the switch is on when its voltage reaches zero ( or switch is off when its current reaches zero ) by resonance . it makes switch loss is zero , so it can increase the operating frequency and raise power density , minimize the size of transformer and inductor
“软开关”是指零电压开关或零电流开关，它是利用谐振原理，使开关变换器的开关管电压(或电流)按正弦(或准正弦)规律变化，当电压过零时，使器件开通(或电流自然过零时，使器件关断) ，实现开关损耗为零，从而提高开关频率，减小变压器、电感的体积。 - The scheme of realizing soft - switching can be found , at the same tune , the concepts of the leading switches and the lagging switches are presented . two kinds of soft - switching methods , zero - voltage - switching ( zvs ) and zero - voltage and zero - current - switching ( zvzcs ) , can be classified on the base of realizing soft - switching of the lagging switches
在对其控制策略的研究中，找出了可以实现软开关的方案；同时提出了超前管和滞后管的概念，根据滞后管实现软开关的方式，将变换器的软开关方式分为两类：零电压开关方式和零电压零电流开关方式。