Highly Efficient Switch-Mode 100 kV,100 kW Power Supply for ESP Applications
For nearly a century, electrostatic precipitators (ESP) were driven by line-frequency transformer-rectifier sets. The last decade has been marked by steady penetration of high-frequency HV power supplies (HVPS) that offer considerable benefits for the industry. This paper describes a novel concept and physical demonstration of an ultra-high efficiency, small size and low cost HVPS specifically designed for ESP and similar markets. Key technology includes a modular HV converter with energy dosing inverters, which operate at about 50 kHz and have demonstrated an efficiency of 97.5％ in a wide range of operating conditions.The inverters output voltages are phase-shifted, which yields an exceptionally low ripple of 1％ and a slew rate of 3 kV/μs combined with low stored energy. Modular construction allows easy tailoring of HVPS for specific needs. Owing to high efficiency, small size is achieved without turning to liquid cooling. Controls provide standard operating features and advanced digital processing capabilities, along with easiness of accommodating application-specific requirements. HVPS design and testing are detailed. Experimental current and voltage waveforms indicate virtually lossless switching for widely-varying load in the full range of the line input voltages, and fair agreement with simulations. Calorimetric measurement of losses indicates to a >98.5％ efficiency of the HV section. The overall efficiency is 95％ at full load and greater than 90％ at 20％ load, with power factor typically greater than 93％.
Electrostatic Precipitator ESP Power Supplies High-Frequency Power Supplies voltage multiplier
Alex Pokryvailo Costel Carp Cliff Scapellati
Spellman High Voltage Electronics Corporation 475 Wireless Boulevard Hauppauge,NY 11788
国际会议
11th International Conference on Electrostatic Precipitation(第11届国际电除尘学术会议)
杭州
英文
284-288
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）