Harmonic Suppression of High-Frequency Power Supply for ICP Light Based on Frequency Power Modulation

Newly-emerging inductively coupled plasma (ICP) light has high efficiency, long life-time and other comprehensive advantages. But, it’s high-frequency power supply will produce conducted electromagnetic interference (EMI) that is hardly suppressed. The paper establishes the conducted EMI model of 150W ICP light’s high-frequency power supply, and analyses conducted EMI’s production mechanism at the fixed working frequency. Design the modified frequency power modulation algorithm with same frequency change step δ and energy pulse duration gradual change. The conducted EMI and optical power parameters tests indicate that modified frequency modulation can solve the conducted EMI problem well. And it can improve the ICP light’s luminous efficiency.

[1]  L. Nyulászi,et al.  The effect of contaminants on the mercury consumption of fluorescent lamps , 2009 .

[2]  Wang Wen-xing,et al.  Harmonic-Suppression System Based on Fuzzy Neural Control in Power Line , 2010, 2010 WASE International Conference on Information Engineering.

[3]  Xu Han,et al.  A Novel Active Power Filter for Harmonic Suppression and Reactive Power Compensation , 2006, 2006 1ST IEEE Conference on Industrial Electronics and Applications.

[4]  Weibin Cheng,et al.  DCM operating characteristics and harmonic suppression study of AC-DC converter , 2008, 2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies.

[5]  Sanjaya Maniktala,et al.  Switching power supplies A to Z , 2006 .

[6]  Quan Xue,et al.  High-Selectivity Tunable Bandpass Filters With Harmonic Suppression , 2010, IEEE Transactions on Microwave Theory and Techniques.

[8]  Wei Chen,et al.  Harmonic suppression of grid-connected distributed generation based on novel Hybrid power filter , 2009, 2009 4th IEEE Conference on Industrial Electronics and Applications.

[9]  Hiroyuki Goto,et al.  Current waveform control of a high‐power‐factor rectifier circuit for harmonic suppression of voltage and current in a distribution system , 2002 .