Surge propagation and overvoltages for PWM-inverter-driven motors

✍ Scribed by Shoji Moriyasu; Yoshihiko Okuyama

• Book ID: 101293911
• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 273 KB
• Volume: 132
• Category: Article
• ISSN: 0424-7760
• DOI: 10.1002/(sici)1520-6416(20000730)132:2<65::aid-eej8>3.0.co;2-7

✦ Synopsis

The use of PWM inverters with high switching characteristics to provide variable frequency supply to motors causes overvoltage with steep-fronted waveform on the motor terminals.

Insulation failure in motor winding can be caused by this steep-fronted transient voltage in inverter drive systems. From the point of view of wave propagation with the skin effect of cable conductors, these phenomena have not been reported previously. The main purpose of this paper to describe the exact surge propagation considering the skin effect of cable conductors and the wave deflections at inverter and motor terminals.