【摘要】 对相控整流式充电机进行研究,从其充电方式、晶闸管移相控制原理及比例积分微分(PID)软件调节设计等方面作了详细分析。对WCD-Ⅳ型微机相控整流式充电机提出了进一步的改进措施:将单脉冲或双脉冲触发信号改进为一组宽度为120°、脉冲间隔为0.12°的脉冲列,并进行高频调制和功率放大,确保晶闸管的可靠导通;采用改进的不完全微分型PID控制算法,并引入积分分离法,通过分离法算式,实现理想调节特性,从而避免积分饱和、减小超调、加快过渡过程,得到了良好的空载稳压特性;增加了逆变放电、高精度全自动充电、温度补偿及相序自适应等功能。更多还原

【Abstract】 The phased commutating charger is researched in charging mode,SCR(Silicon Controlled Rectifier) phase-shifting control theory and software PID(Proportional-Integral-Deriva-tive) regulation design and so on.Some improvements are presented for WCD-Ⅳ PC phased commutating charger.The monopulse and dipulse trigger signals are transferred into a pulse train with width of 120° and interval of 0.12°;high-frequency modulation and power amplification are used to ensure the reliable operation of SCR;the incomplete differential PID control algorithm is adopted,combined with the integral isolation method and using its isolation formula,to realize the ideal regulating property for avoiding integral saturation,minishing overshoot,accelerating transition process,and improving no-load voltage stability;several functions are added,such as contravariance discharging,high-precision full-automatic charging,temperature compensation and self-adaptaion of phase sequence.更多还原