Study of Energy-Saving Pulse Power for WEDM Based on Pulse Width Modulation

Author

Li, Chaojiang ; Bai, Jicheng ; Guo, Yongfeng ; Lu, Zesheng

Author_Institution

Dept. of Manuf. & Autom. Eng., Harbin Inst. of Technol., Harbin

fYear

2009

fDate

27-31 March 2009

Firstpage

1

Lastpage

5

Abstract

The energy efficiency of traditional pulse power for wire electrical discharge (WEDM) is less than 25% because of the use of current-limiting resistance. The new type of energy-saving resistor-less pulse power proposed in this paper employs the structure of a dual-arm power amplifier, the strategy of single-arm pulse width modulation (PWM) and the control mode of cutting off long-time short circuit. Heat generated by current-limiting resistance and useless power consumption caused by long-time short circuit is avoided, and therefore the energy efficiency is increased.

Keywords

electrical discharge machining; energy conservation; power amplifiers; pulse width modulation; short-circuit currents; WEDM; control mode; current-limiting resistance; dual-arm power amplifier; energy efficiency; energy-saving pulse power; long-time short circuit; pulse width modulation; wire electrical discharge; Electric resistance; Energy consumption; Energy efficiency; Power amplifiers; Power generation; Pulse amplifiers; Pulse circuits; Pulse width modulation; Space vector pulse width modulation; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific

Conference_Location

Wuhan

Print_ISBN

978-1-4244-2486-3

Electronic_ISBN

978-1-4244-2487-0

Type

conf

DOI

10.1109/APPEEC.2009.4918791

Filename

4918791