電(dian)(dian)動車(che)控(kong)制(zhi)器是借助 PWM 電(dian)(dian)路來控(kong)制(zhi)電(dian)(dian)機(ji)輸出功(gong)率(lv)(lv)的,實現開(kai)關(guan)調制(zhi)作用(yong)的是高頻開(kai)關(guan)功(gong)率(lv)(lv)器件 MOS 管,用(yong)它來做執(zhi)行高頻斬波斷續供(gong)電(dian)(dian)的開(kai)關(guan),從(cong)而(er)有效地解決(jue)了電(dian)(dian)機(ji)的速度(du)和電(dian)(dian)流的操(cao)控(kong)性。