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脉冲或间歇供电模式可以大幅度降低电除尘器能耗和提高除尘效率。为了实现电除尘器的脉冲供电,减少脉冲电源的成本和体积,在IGBT高性能器件基础上,综合利用串联谐振逆变技术和倍压整流技术,搭建了一高频高压脉冲数控电源,并用PSpice软件对此电源进行了仿真,分析了倍压器所用电容和负载电阻对倍加器输出电压的影响。最后给出基于LabVIEW环境的倍加器型高频高压电源实验,其输出电压峰值达到了30kV,频率为70kHz。实验的结果验证了频率、输出的可控性及仿真的正确性,仿真和实验结果可用于数控闭环系统的设计和构建。鉴于目前国内火电脱硫主流模式是化学湿法,产生大量无经济利用价值的低品位石膏,脉冲或间歇供电模式在火电领域推广可以大幅度提高除尘效率,从而使石膏变白并提高石膏品位,变废为宝,达到节能减排目的。
Pulse or intermittent power mode can greatly reduce the energy consumption ESP and improve dust removal efficiency. In order to realize the impulse power supply of ESP and reduce the cost and volume of impulse power supply, a high-frequency high-voltage pulse NC power supply is constructed based on IGBT high-performance devices by using series resonant inverter technology and voltage doubler rectification technology. PSpice The software simulates this power supply and analyzes the influence of the capacitor used in the voltage doubler and the load resistance on the output voltage of the doubler. Finally, an experiment of doubler type high frequency and high voltage power supply based on LabVIEW environment is given. The peak output voltage reaches 30kV and the frequency is 70kHz. The experimental results verify the correctness of the frequency, the output controllability and the simulation. The simulation and experimental results can be used in the design and construction of NC closed-loop system. In view of the fact that the mainstream mode of domestic thermal power desulphurization is a chemical wet process, a large amount of low-grade gypsum with no economic utilization value is generated. The pulse or intermittent power supply mode can greatly improve the dust removal efficiency when popularized in the thermal power field so as to whiten the gypsum and improve the gypsum grade. Waste for the treasure, to achieve energy-saving emission reduction purposes.