In theory analysis , the voltage waveforms of the 12 - pulse waveform controlled rectifier circuit and three - phase thyristor converter under fault and normal condition are analyzed and researched in detail , all the faults states are summarized and classified according to the aberrant voltage waveforms 在理论分析方面，本文对三相桥式整流电路、 12脉波可控整流电路等大功率电力电子装置整流电路在正常运行及故障状态下的整流电压波形进行了详细分析和研究，按照电压波形对故障状态进行了总结和归类。
The bias magnetic field of the bias coil driven by bias current and small signal test current , results in the induced signal of the control coil . the terminal voltage of the control coil is detected by the test circuit . then the signal containing the information of rotor displacement is obtained , from which we can get the dc voltage signal proportional to the rotor displacement through half - wave rectification circuit and low pass circuit . this dc signal is put into a pid controller to get the control signal of the rotor displacement 偏置测试电路向偏置线圈输入偏置电流和小信号测试电流,两者产生的偏置磁场在控制线圈产生感应信号,检测电路检测控制线圈端电压并提取含有转子位移信息的电压信号,该信号经半波整流电路和低通滤波电路后得到与转子位移成正比例的直流信号,再由pid控制器转换为转子位移的控制信号,最后控制信号输入功放电路产生控制电流,实现闭环控制。
The design and simulation of the circuit , which is designed to drive a power mosfet with a 500v breakdown voltage and maximum ia operation current , is implemented . the circuit can be used as a pre - regulator for electronic ballast . the ic solution also provides a voltage - regulator with the functions such as undervoltage lockout , and overvoltage protection 设计目的是使电路作为电子镇流器的前端变换器可以驱动耐压为500v ，最大工作电流为1a的横向功率mos ，对整流电路的直流输出电压进行稳压，并实现过压、欠压保护，提高用电效率，经过理论分析使经校正后的功率因数达到0 . 95以上。
This article analyzed the three - phase full - controlled bridge commuted circuit 、 the three - phase half - controlled bridge commuted circuit and the harmonic occurred by the two circuits . through the analysis to the relative merits of the passive filter and active filter , a new applied harmonic current compensation device was presented in this article 三相整流装置是广元电力网两大谐波源之一，本文详细地分析了三相全控、半控桥式整流电路及其产生的谐波，在此基础上，对其谐波的抑制进行了探讨。
The research on the whole power supply falls into three - phase bridge rectification and ps zvs pwm dc / dc full - bridge converter . the paper gives the model of three - phase bridge rectification and ps zvs pwm dc / dc full - bridge converter . the resonant component of ps zvs fb converter is conformed by theoretic - analyzing and simulation 在对整流电路和移相控制zvspwmdc dc全桥变换器进行了大量研究后，给出了整个电源系统的仿真模型和仿真结果，试验结果证明本文设计的电源满足充电性能要求。
The power circuit of the system adopts the voltage frequency conversion structure of ac - dc - ac , and is composed of the commutation circuit , filter circuit and intelligence power module ( pm15rsh120 ) . control circuit takes the dsp chip tms320lf2407 as core , including the pwm signal occurrence circuit , detect circuit of stator current and direct current voltage of generatrix , drive circuit of intelligence power module , detect circuit of speed , protect circuit of system etc . all of this builds the full digital vector control system of asynchronous motor 该系统的功率电路采用电压型的交-直-交变压变频结构,由整流电路、滤波电路及智能功率模块ipm ( pm15rsh120 )逆变电路构成;控制电路以dsp芯片tms320lf2407为核心,加上pwm信号发生电路、定子电流检测电路、直流母线电压检测电路、智能功率模块驱动电路、速度检测电路、系统保护电路等,构成了功能齐全的异步电机全数字化矢量控制系统。
