zero voltage中文什么意思

例句与用法

更多例句：  上一页    下一页
1. The main circuit of the design in this article we used is fb zvs pwm dc / dc converter , full bridge zero voltage switching pulse width modulation dc / dc converter , which is a full bridge circuit composed of four power switches using resonance to implement zero voltage when turning - on or turning - off
   本文设计的通信电源充电模块的主电路采用的是fbzvspwmdc dc变换器，即全桥零电压开关脉冲宽度调制的直流变换器，它是由4个功率开关管组成的全桥电路，利用谐振使每个开关管在零电压的条件下完成导通和关断。
2. The function of zero voltage vectors in pmsm dtc is different from that of asynchronous motor . the difference is discussed in the paper and a novel pmsm dtc system based on the fuzzy distribution of zero voltage vector strategy is proposed at last . simulation results show that the new method decreases the torque ripple after using zero voltage vectors properly
   论文分析了零电压矢量在永磁同步电机直接转矩控制系统中的作用，并提出了一种基于模糊零电压矢量分配策略的永磁同步电机直接转矩控制方法，仿真结果表明该方法有效地利用零电压矢量达到了减小转矩脉动的目的。
3. Conventional hard switching technology has several flaws below : on and off loss , inductive off , capacitive on and diode recover problems . comparing with it , the loss of on and off decreases markedly , as the switches are on and off in zero voltage or zero current cases . and also the size of converter becomes smaller because of the higher of switching frequency
   传统硬开关技术由于存在开通关断损耗大、感性关断、容性开通、二极管反向恢复等问题,与之相比,软开关技术在零电压或零电流条件下导通,开关损耗明显降低,加上开关频率的提高使得变换器的体积得以减小,这也是软开关技术受到青睐的原因。
4. When the motorcycle is braking or slowing down , the kinetic and / or potential energy is fed back to the battery , so the running distance can be extended and the energy efficiency is improved . an asynchronous motor is employed in this new system which can overcome the traditional dc drive system bugs and to reduce the cost and maintenance . in addition , the switches of dc / dc converter switch under zero current and zero voltage conditions , which can also reduce the switch losses , electro magnetic interference ( emi ) and prolong its life
   该系统在功能上实现了车辆刹车减速或下坡制动时能量的回馈，达到节能、提高能量使用效率和增加车辆行驶距离的目的；采用交流异步电机，克服了传统直流驱动系统的诸多缺陷，降低了成本，减少了维护；采用zczvs技术，降低了电磁干扰和损耗，提高了效率；另外，在逆变主电路中采用ipm模块，简化了系统结构，节约了空间，提高了整个系统的可靠性和经济性。
5. A novel cycloconverter - rype three - phase hf link inverter topology for soft - switching based on phase - shifted full - bridge mode is proposed , whose main advantages are as follows : under the conditions of d < i < and overlap - d , the switches of the leading leg are turned on at zvs and the switches of the lagging leg are turned off at zcs and all switches of the cycloconverter circuit are commutated in the overlapping mode in the interval of zero voltage , which makes the circuit realize soft switching to the utmost extent and reliably solve the problem of peak voltage caused by the storing energy of leakage inductance of hf transformer
   论文提出一种新型移相全桥软开关周波变流型三相高频链逆变器，电路的主要优点是：前级移相全桥的移相角控制在_ d _ i和_ ( overlap ) - _ d条件下，超前桥臂零电压开通，滞后桥臂零电流关断，并使周波变流器所有开关在零电压期间重叠换相，使整机开关最大程度地实现了软开关，并可靠解决了高频变压器漏感储能引起的电压尖峰问题。