Partial discharge measurements in PWM inverter-driven low-voltage motors

Author

Phung, B.T. ; Shao, S. ; Rahman, M.F. ; Chu, M. ; Vickers, C.

Author_Institution

Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia

fYear

2009

fDate

27-30 Sept. 2009

Firstpage

1

Lastpage

6

Abstract

Partial discharge (PD) on low-voltage motors was not recognised as a potential issue until recently. Evolving converter technology has challenged the limit of LV insulation systems. Possible reliability issues have been recognised due to PDs, especially for inter-turn insulation. PD is related to the extension of standard 415 V insulation systems to PWM inverter fed applications on 415 V and 690 V systems. The problem is exacerbated in inverter systems without dv/dt filters and run through long cables. This paper investigates the possibility of measuring PDs for such applications and aims to develop a practical insulation assessment methodology based on the IEC-TS 60034-18-41 proposal.

Keywords

PWM invertors; induction motors; machine insulation; partial discharge measurement; IEC-TS 60034-18-41 proposal; LV insulation systems; PWM inverter-driven low-voltage motors; converter technology; dv/dt filters; electrical insulation; insulation assessment methodology; inter-turn insulation; inverter systems; low voltage motors; partial discharge measurements; pulse width modulated inverters; reliability issues; switching surges; voltage 415 V; voltage 690 V; Cables; Capacitance; Coils; Insulation; Partial discharge measurement; Partial discharges; Pulse width modulation inverters; Stress; Voltage; Wounds; electrical insulation; low votage motors; partial discharge; pulse-width modulated inverters; switching surges;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference, 2009. AUPEC 2009. Australasian Universities

Conference_Location

Adelaide, SA

Print_ISBN

978-1-4244-5153-1

Electronic_ISBN

978-0-86396-718-4

Type

conf

Filename

5356624