Title :
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
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;
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
DOI :
10.1109/APPEEC.2009.4918791
