描述
6kV电网电压经过副边多重化的隔离变压器降压后给功率单元供电,功率单元为三相输入,单相输出的交直流PWM电压源型逆变器结构,相邻功率单元的输出端串联起来,形成Y接结构,实现变压变频的高压直接输出,供给高压电动机。6kV电压等级的高压变频器,每相由六个额定电压为600V的功率单元串联而成,输出相电压最高可达3464V,线电压达6000V左右。改变每相功率单元的串联个数或功率单元的输出电压等级,就可以实现不同电压等级的高压输出。每个功率单元分别由输入变压器的一组副边供电,功率单元之间及变压器二次绕组之间相互绝缘。二次绕组采用延边三角形接法,实现多重化,以达到降低输入谐波电流的目的。6kV电压等级的变频器,给18个功率单元供电的18个二次绕组每三个一组,分为6个不同的相位组,互差10度电角度,形成36脉冲的整流电路结构,输入电流波形接近正弦波,这种等值裂相供
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,
力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
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