phase single meaning in English
单相位
Examples
- A three - phase single - switch fly - back rectifier with lossless isolated snubber
带隔离型无损缓冲的三相单开关反激式整流器 - The system is different from traditional silicon controlled dephasing method , such speedy modules as whole controlled electric and electronic equipment igbt and high frequency pwm controlling methods are employed , and the voltage of exchanging power supply of motor of beam pumping units can be controlled automatically , so there is no problem of power factor being decreased brought by silicon controlled phase single controlled , power factor in power net of beam pumping units " motor is enhanced really
由于双管齐下，电机电网侧的功率因数得到了大大提高。与传统的可控硅移相控制方式不同，本系统采用全控型电力电子器件igbt等快速模块及高频pwm控制方式，对抽油机电机的交流供电电压进行自动控制，不存在可控硅相控角所带来的功率因数变差的问题，真正提高了抽油机电网侧的功率因数。 - These studies in the thesis have been done as follows : it is proved that if the three - phase single - switch boost type power - factor - correction can work in continuous - current - mode , its power factor can not reach unity . therefore , it is not qualified for high power and high requirement application . according to the ac side equivalent circuit of the three - phase three - switch boost type power - factor - correction , the equations to realize unity power factor have been deduced and realized by integrate - reset - control circuit
本论文把积分复位控制成功应用于三相功率因数校正技术中，作了以下几方面的研究： 1 .从理论上证明了三相单开关boost型pfc即使工作在ccm ，其功率因数也不能达到1 ，在大功率和对功率因数校正能力要求较高的场合，三相单开关boost型pfc达不到要求， 2 .根据三相三开关boost型功率因数校正交流侧的等效电路，推导出实现单位功率因数所需的控制方程，并用积分复位控制电路进行实现，在理论研究的基础上进行了仿真研究。