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The Design of Phase Angle Controller Reducing Sub-harmonic Current for Universal Motor in Vacuum Cleaner  

임홍우 (조선대학교 전기공학과)
장용해 (광주기능대학 전기과)
백형래 (조선대학교 전기공학과 교수/대한전기학회 전기기기 및 에너지 변환시스템부문의 부회장)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.7, no.3, 2002 , pp. 237-243 More about this Journal
Abstract
The single phase angle control system may become noisy when speed Is modulated with a conventional TRIAC AC controller. But this system is widely used despise of occurring sub-harmonic current because of its simply structure and low cost. Most of the vacuum cleaner drive control system regulates TRIAC's phase angle, so that it is controlled the speed. In the case of marketing product, it is not considered linearity of the speed to minimize occurring harmonic current. The sub-harmonic current reduces effectively in regulating specification TRIAC trigger phase angle. In this paper, we examined about characteristics of phase angle controller and parameter of parallel coil for eliminating sub-harmonic current.
Keywords
Single phase angle control system; TRIAC′s phase angle; Sub-harmonic current; vacuum cleaner;
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