Ultrasonic Frequency Fast-convert Pulse Plasma Spraying Power Supply Topology
Considering the high DC current and high pulse frequency characteristic of ultrasonic frequency fastconvert pulse plasma spraying process, a special power supply topology was proposed, which was composed of the mutual independent base current circuit and peak current circuit. Base current circuit was consisted of four parallel direct current power supplies, which was not only to meet the requirements of high power output, but also improved the reliability of power supply. Base on the Boost circuit topology, a peak current circuit was designed, which could reduce effectively the output inductance influence and output ultrasonic frequency pulse high current with fast-convert rising and falling edge. Based on the above techniques, the Ultrasonic frequency fast-convert pulse plasma spraying power supply was established. It can output 5-1000A base current, 0-250A peak current, and the pulse current frequency band is 20-100kHz, 10％-80％ duty ratio and pulse current change rate over 50A /s.
ultrasonic frequency pulse fast-convert plasma spraying
W.Zhang B.J.Qi H.Y.Xu
School of Mechanical Engineering and Automation, BeiHang University, Beijing 100191, China Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China
国际会议
北京
英文
359-363
2010-10-25（万方平台首次上网日期，不代表论文的发表时间）