Also , we select the signal collecting circuit of three output polars , the coupling circuit using capacitance and resistance , the alternating amplify processing circuit , the positive feedback retardation comparsion , the driving circuit of output current and the stabilization voltage supply circuit 选择了insb磁阻三端输出型信号采集电路，阻容耦合型交流放大电路，正反馈迟滞型电压比较器和大电流推挽驱动电路及稳压电源电路。
Based on the design theory of power amplifier , a wide - band power amplifier was designed successfully by the push - pull transistor , the feedforward technical of linearization , the matching circuits of transmission line transformers and microstrip , and ads simulation software 根据宽带功率放大器的设计原理，采用推挽结构晶体管，前馈线性化技术，传输线变压器和微带混和匹配电路，利用ads进行仿真设计，成功的设计出一款宽带功率放大器。
In addition , the dynamic equation of the rotor with trailing edges and the 2 - x actuator has been modeled for analyzing the aerodynamic performance of the rotor . the result of the analysis tells us that the performance of the rotor with trailing edges can get a remarkable improvement 进而研究旋翼动力学模型,将推挽式双x驱动器模型作为后缘附翼的一种驱动机构,分析旋翼的气动性能,仿真运算结果表明,后缘附翼智能桨叶在各方面的性能都有显著的提高。
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。
With the best modulation strategy which was found on condition that it must have largest energy transfer ratio , smallest current ripple of the inductor , and realizing zvs of each switches , the converter overcomes the drawbacks presented by the conventional zvs fb converter , such as high voltage stress of each switches , large current ripple of the inductor , and severe parasitic ringing on the rectifier diodes , so it can get higher efficiency , faster respond speed , and wider application area . the operation principle of the proposed converter is analyzed and verified by a 3kw , 50khz experimental prototype . experiments and research results show that the scheme of the tl topology derivation is reasonable , adjusted modulation strategy makes some other severe problems in conventional topologies easy to solve or makes the converter more competitive 研究结果表明，本文提出的三电平拓扑变换方案合理，针对各种三电平拓扑寻找到的控制策略可以解决变换器存在的某些问题或使变换器表现出更突出的优势：例如针对单管直流变换器三电平拓扑的控制策略可以减小电感的设计值，针对推挽直流变换器三电平拓扑的控制策略可以实现开关管的软开关、解决变压器偏磁问题等，针对全桥直流变换器三电平拓扑的控制策略可以减小电感的设计值、实现开关管的软开关等。
Aimed to acquire high efficiency and realize high frequency of the converter , this paper takes the forepart of the aeronautical static inverter ( asi ) - dc / dc converter as research object . push - pull forward converter ( ppfc ) , which adapts to be applied in low voltage , high current input power field , is proposed and studied in this paper based on comprehend to main characters of asi and references to the development of the vrm 本文以航空静止变流器中dc dc ? dc ac结构的前级为主要研究对象，针对效率和高频化问题，在充分考虑航空静止变流器前级dc dc特点的基础上，借鉴国外vrm技术的发展历程，选择了适合于低压大电流场合下工作的推挽正激电路( ppfc ) ，作为基本电路拓扑，进行了一些理论与实验的研究工作。
Ppfc working principle , circular current and effects of clamping capacitor are studied in this paper in detail . because of the clamping capacitor , ppfc have some good features compared with ppc : reducing the fluctuate of the input current ; restraining the voltage spike of the power mosfet ; avoiding the bias - magnetic of the transformer 由于箝位电容的加入，相对于推挽电路而言，该拓扑具备了一些独特的优点：减小了输入电流的脉动：削弱了开关管的关断电压尖峰；有效抑制了变压器的偏磁。
In this dissertation , a novel bidirectional dc / dc converter ' s topology was designed , witch used in vehicle power supply systems . the converter is composed of fundamental bidirectional switch cell , using phase - shifted full - bridge zvs pwm dc / dc converter in buck circuit and using push - pull boost converter in boost circuit 文中从双向dc dc变换基本单元入手，针对某大型车载电源系统设计了一种新型双向dc dc变换器拓扑电路，降压变换采用移相全桥式zvs ? pwm功率变换，升压变换采用推挽式dc dcboost功率变换。
The experiment result shows that conversion efficiency in ccm is improved by 2 percent compared with that in dcm , although the on - resistance of winding in ccm is more than that in dcm . the analysis of open - loop transfer function in both dcm and ccm shows that pull - push hfl inverter at ccm 微分补偿网络的推挽高频链逆变电路在输出从空载变化到额定阻性负载变化的过程中，逆变电路工作模式从dcm变化到ccm模式，实验结果表明电路在这两种模式下都能输出稳定的正弦电压，且具有较高的稳态精度。
Then novel circuit structure of bi - directional voltage mode ( based on forward converter ) inverters with high frequency link , are proposed , which is constituted of input cycloconverter , high frequency transformer , output cycloconverter , input and output filter ; the circuit topologies family of this bi - directional voltage mode inverters with high frequency link include six circuit topologies , such as push pull - full wave mode , push pull - full bridge mode , half bridge - full wave mode , half bridge - full bridge mode , full bridge - full wave mode , and full bridge - full bridge mode etc . taking full bridge - full bridge mode circuit as an example , principle of uni - polarity phase shifting controlled bi - directional voltage mode inverters with high frequency link is introduced 本文首先论述了dc / ac逆变技术的应用前景及发展现状。基于正激forward变换器的双向电压源型高频环节逆变器电路结构,由输入周波变换器、高频变压器、输出周波变换器、以及输入、输出滤波器构成;双向电压源高频环节逆变器电路拓扑族,包括推挽全波式、推挽桥式、半桥全波式、半桥桥式、全桥全波式、全桥桥式六种电路。
