| 1. | 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。 |
| 2. | The advantage and disadvantage have been pointed out . four - phase control method has been introduced particularly and three basic principle expressions are proved 其中重点介绍了四相控制法,并且详细推导证明了三个基本公式。 |
| 3. | The whole system adopts one pll only to control vco to output the ultra wideband frequency of 2 ~ 12ghz , and realizes small volume , low cost microwave frequency source 整个系统采用单环锁相控制vco ,输出2 ~ 12ghz的超宽带频率,实现了小体积、低成本的微波频率源。 |
| 4. | By virtue of the small - signal model the control stage is optimized and the integrated circuit uc3875 is used to complete the control stage 根据全桥移相zvsdc dc变换器电路的小信号模型,对其控制电路作出了优化设计,并采用移相控制芯片uc3875设计了相应的控制电路。 |
| 5. | The theory of phase - shifted full - bridge zvs pwm dc / dc converter circuit is studied and the phase - shifted controller uc3875 is used for phase - shifted control circuit 文中研究了移相全桥零电压pwmdc dc变换器的工作原理,使用移相控制芯片uc3875设计了移相控制电路。 |
| 6. | This thesis focuses on the development of the dc / dc stage , which adopted the phase - shifted zero - voltage - switching ( zvs ) pwm full - bridge converter with two clamping diodes 本文主要研究单相静止变流器的dc / dc级,它采用加箝位二极管的移相控制zvspwm全桥直流变换器。 |
| 7. | 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。 |
| 8. | On the basis of theory and simulation analysis , the design , execution and experimental study of the phase - shifted zero - voltage and zero - current switching pwm dc / dc full - bridge converter is fulfilled 在理论和仿真分析的基础上,对新型移相控制zvzcspwmdc dc全桥变换器进行了设计、制作及实验研究。 |
| 9. | Some special controls can be found hi all the possible disposing - phases to simplify the solution of the linear model , thus increasing the research efficiency . simulation of this method is made to prove the validity of the method 在相控阵天线的全部可能配相中寻找某些特殊的配相控制,就能够简化线性模型的求解,从而提高天线测量的效率。 |
| 10. | Ac link is fully verified by the simulation and the pricinple test . this kind of converter lay the key technical foundation on new type electronic transformer , regulated sinusoidal ac power supply , ac regulator 220v 10 ( 50hz ) 220v ( 50hz )单极性移相控制电压源高频交流环节ac ac变换器的仿真与原理试验证实了这类变换器新概念的正确性与先进性。 |