A Novel Approach to Practical Matrix Converter Motor Drive System With Reverse Blocking IGBT

• 来源期刊: 变频器世界
• 学科: 工学
• 关键词: IGBT 驱动系统 直接转矩控制 电动机
• 年，卷（期）: bpqsj_2006,（1）
• 页码范围: 26-28
• 页数: 3页
• 分类号: TM921

摘要

<正>Ⅰ. INTRODUCTION AMOTOR drive system with a conventional inverter has several problems, for example, large input current harmonics in case of accompanying a diode rectifier. Moreover, an electrolytic capacitor will be big and costly if a long lifetime is required. In addition, the conventional system needs a charge up circuit for the dc-link electrolytic capacitor and a 'breaking unit' composed of a switch and a resistor to dissipate a generated power from the motor. Usually, a pulse-width modulated (PWM) rectifier is applied for the input circuit in order to reduce the input current harmonics and to realize a generation from the motor. However, the PWM rectifier reduces efficiency and in-