The control logic of the auxiliary switches is much simple . based on the analysis of the proposed inverter , the zero - transition condition is obtained . a prototype is made verifying the feasibility of the new inverter 通过对提出电路工作原理的详细分析，给出了该电路功率开关器件零电压过渡条件，在此基础上研制了一台原理样机，验证了提出的方法的可行性。
In this paper , the operation principle and the equivalent circuit structures in different periods of time of the dual - bridge zero - voltage - switching ( zvs ) bi - directional dc - dc converter are analyzed . the condition of achieving soft - switched is derived 文中介绍了双向半桥零电压( zvs )变换器的工作原理和不同时间段的等效电路图,以及给出了实现软开关的条件。
These years more and more emphasize have been focused soft - switching control in phase - shifted zvs pwm full - bridge dc / dc converter and more research need to be made . the principles of phase - shifted zvs pwm full - bridge converter are described and analyzed 基于移相控制的零电压脉宽调制dc - dc全桥变换器是软开关控制的一个研究热点，还有许多理论问题需要研究。
Higher frequency , modular construction and digitalization is the main development tendency in the field of the switching power supply . high power density and high frequency converter is based on soft - switching techniques 实现高频化的主要途径是软开关技术，全桥移相零电压脉宽调制变换器是软开关pwm技术在全桥直-直变换器中较成功的应用例子，并具有较好的工程实现价值。
However , these converters become more complicate . phase - shift bi - directional dc - dc converter is attractive since it operates with fixed frequency , has small voltage and current stress and can realize zvs without auxiliary switches 相移控制双向dc - dc功率变换器因具有功率器件电压,电流应力小,定频工作和无须增加辅助器件即可实现功率器件的零电压开关条件等优点而受到关注。
This paper mainly designs a novel zero - voltage - soft ( zvs ) switching dc / dc chopper and validate on experiment which could be have abroad application in maglev , that is based on the study object of low and middle speed electromagnetic - suspension ( ems ) maglev 本文以中低速磁悬浮列车为课题研究背景,设计并试验验证了一种可以广泛应用于磁悬浮列车的新型零电压软开关dc / dc斩波器。
The second , the realization of the zvs has no concerned with the attribute of load . with the load of light or full , even the resistance or inductor load , the chopper can ensure that the main - switches will realize the zvs switching 其次,实现零电压软开关的条件与负载的性质和程度没有关系,无论是电阻性负载还是大电感负载,无论是轻载还是满载,都可以实现功率器件的零电压开通和关断。
The characteristic of those topologies are analyzed in detail . a novel isolated interleaving two - transistor forward boost converter is proposed in this paper . this converter has less voltage stress of power switches , and no transformer magnetic deviation 研究一种新颖的隔离boost变换器,它具有开关管电压应力低,没有变压器单向磁饱和问题,可以实现交错并联双管正激电路所有开关管零电压开关。
Phase - shifted zero - voltage - switching pwm full bridge converter can realize zvs for the power switches with the use of the leakage inductance of the transformer and the intrinsic capacitors of the power switches , so it is used widely for medium and high power applications 移相控制零电压开关pwm全桥变换器利用变压器的漏感和开关管的结电容可以实现开关管的零电压开关，在中大功率的场合应用广泛。
Compared with phase - shift control , pwm plus phase - shift control can reduce the current stresses and rms currents of the converter . the loss of the converter can also decrease . lt is proved the converter can achieve zvs in larger load variation 与常规相移控制方式相比， pwm加相移控制方式能减小变换器的电流应力，减小通态损耗，同时也能拓宽零电压开关的范围，使变换器在较宽的负载变化范围内都能实现软开关。
