| 1. | Research on zero - voltage - switched simmering circuit
零电压开关预燃电源的研究 |
| 2. | For high voltage switching ( above 500v ) , the glass tube is evacuated
对于高电压开关（高于500v ） ，玻璃管则是被抽空的。 |
| 3. | Although more costly , this provides the highest standoff voltage switch
这种方法尽管成本较高，但是能够提供最高的关态电压开关。 |
| 4. | It has very important research worth in this thesis , the ps - fb - zvs pwm dc / dc converter with a saturable inductor is deeply studied in detail
论文对带饱和电感的移相控制零电压开关全桥变换器进行了深入的研究。 |
| 5. | The realization of shift - phase pwm control with zero - voltage and high speed , large power drive circuit is emphatically solved
重点解决了零电压开关的移相pwm控制策略的实现、高速大功率驱动电路的实现等几个难点问题。 |
| 6. | 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。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | As a result , dtc system is affected by fewer parameter of the motor and has less complex structure and fewer calculations . since it was brought forward , direct torque control has been took serious attention by domestic and foreign scholars because of its novelty idea , simple structure and wonderful property . this paper adopts the fuzzy controller to select the voltage vectors after expound the basic theory of dtc , and this method is improved to be effective by the result of the emulation
本文在阐述直接转矩控制原理的基础上，针对常规的直接转矩控制系统由于转矩调节器和磁链调节器采用施密特触发器，其容差的大小对系统性能影响大这一缺点，将智能控制理论应用于直接转矩控制中，用模糊控制器进行电压开关状态选择，使系统的性能得到明显地改善。 |
