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最近,ABB公司推出了ACS1000系列高压变频器,在逆变用的功率模块、主电路的结构以及转矩控制方式等方面,都有独到之处,堪称高压变频器中的佼佼者,今介绍如下: 一、采用了功率模块的最新产品—IGCT (1) 概述 迄今为止,在众多的逆变用半导体功率模块中,用得较多的主要有两种: 1) IGBT(绝缘栅双极晶体管) 这是目前在中小容量变频器中用得最多的功率器件。其主要优点是:工作频率高(可达20kHz以上),开关过程中不需要缓冲电路等;主要缺点是:断态时的击穿电压
Recently, ABB introduced the ACS1000 series of high-voltage inverters, which are unique in terms of the inverter power module, the structure of the main circuit and the torque control method. They are the best in high-voltage inverters. As follows: First, using the latest power module products - IGCT (1) Overview So far, in many inverter power semiconductor modules, there are two more used: 1) IGBT (Insulated Gate Bipolar Transistor ) This is currently the most used power device in small and medium capacity inverters. Its main advantages are: high operating frequency (up to 20kHz or more), the switching process does not require a buffer circuit; the main drawback is: Breakdown voltage