zero voltage造句
例句与造句
- On binary - ended forward converter with constant frequency zero voltage transition
恒频零电压转换双端正激变换器研究 - Zero voltage resistance
零压电阻 - At the end , a half - bridge dc / dc transformer with zero voltage switching ( zvs ) is presented
最后本文研究了一种半桥软开关直流变压器电路。 - Finally , the operation principle of three - level shift phase pwm control with zero voltage is validated by the simulation analyze and the debugging experiment of 230v / 10a sample device
最后，通过仿真分析以及对230v / 10a样机的调试实验，验证了零电压三电平移相控制pwm三电平直流变换器的工作原理。 - In all interleaving two - transistor forward switches , zero voltage switching can be obtained which can apparently improve the power density . however the isolated boost converters need to resolve two problems
但是隔离boost变换器需要重点解决两个问题: 1 )减小功率开关关断时两端浪涌电压; 2 )隔离boost变换器的起动。 - It's difficult to find zero voltage in a sentence. 用zero voltage造句挺难的
- On the detailed analysis of pmsm dtc principle , the function of zero voltage vector and the choice method of voltage vector in ev driving are proposed . restricted condition about stator flux linkage under dtc is analyzed
在详细分析dtc应用于pmsm的基本原理基础上，研究了零电压矢量在pmsmdtc中的作用并提出电动汽车用pmsm电压空间矢量的选择方法。 - 2 . we present a novel de - rail parallel resonant zero voltage transition three - phase pwm voltage - source inverter which is based on resonant zero voltage ( zero current ) transition technique ; at the same time it ' s efficiency analysis and simulation result are presented . 3
把谐振过渡软开关技术应用于直流环节逆变器得到了一种新的谐振过渡软开关逆变器；论文对该新型谐振过渡软开关逆变器进行了工作原理、效率分析并对主电路进行了仿真。 - The whole high power switch supply have four bidirectional dc / dc converters which are parallel connection . the theory of phase - shifted full - bridge zvs pwm dc / dc converter and the theory of push - pull boost converter are introduced . the methods of realize zvs ( zero voltage switching ) is studied in detail
文中介绍了移相全桥式软开关变换及推挽式dc dcboost变换的工作原理，分析了移相全桥zvs的实现和占空比的丢失，并设计了各自的控制电路和保护电路。 - Traditional direct torque control uses two value torque regulator which makes zero voltage vector work long and make flux shape bad seriously and makes response time long when the speed of induction motor is very low or drops down quickly . in order to solve this problem the thesis puts forward a new way to use three - value torque regulator , when the motor speed is very low or drops down quickly , the contrary voltage vector is used instead of zero voltage vector and the between the stator flux and rotor flux is reduced quickly so that torque is reduced quickly and response time becomes shorter
为此，本论文提出三点式转矩调节，这样当电机低速运转或给定转速突降时，不是加零电压矢量，而是加反方向的电压矢量，使定子磁链与转子磁链之间的夹角迅速减小，从而使电磁转矩也迅速减小，大大减小了调速时间，同时磁链值仍然保持基本恒定，输出比较稳定的电磁转矩，这在电机制动过程中非常有用。 - A topology of asymmetrical half bridge soft switching is researched in this thesis , which has inherent zero voltage switching ( zvs ) capability and thus potentially higher efficiency by its resonating of the leakage of power transformer with the parasitic capacitances of the power mosft switches , whereas it does n ' t raise the expense of the converter these studies in the thesis have been done as follows : ( 1 ) the topology of asymmetrical half bridge is introduced , and its principle and the relation of duty cycle and input voltage and output voltage discussed , the method of eliminating the deflection magnetism is also brought forward
虽然，软开关技术能够实现功率变换器的小型化、模块化等，但是，电路变得更加复杂，使得中小功率的变换器的成本增加，往往不利于商业竞争。本文研究了一种零电压的不对称半桥拓扑结构，它可以在不增加电路成本的基础上，利用电路自身的特点，实现软开关。本文所做的主要工作如下： ( 1 )对不对称半桥主电路工作原理进行分析，给出了占空比与输出电压、输入电压的关系以及消除变压器偏磁的方法。 - 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。 - 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。 - 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。 - 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。 - 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。
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