High frequency and high voltage power for ESP is most advanced technology in today’s ESP power supply technology. Compare to conventional silicon control industrial frequency power, it has many excellent performance such as small output ripple, high average electric current and voltage, small volume, light weight and integration of complete set of equipment, high conversion efficiency and power factor, little influence to state grid of power with three-phase power supply. Especially it can improve dust collecting efficiency greatly, so it is revolutionary replacement product for traditional silicon control industrial frequency power, a qualitative leap for power supply of ESP is achieved by high frequency power.
    Ⅰ. Features of high frequency power
    1. High efficiency and energy saving, efficiency of high frequency power can be 95%, save energy 20% or above compare to industrial frequency.
    2. Improve dust collecting efficiency greatly, reduce dust emission more than 20%.
    3. Small volume and light weight, less civil construction cost and cable cost.
    4. Increase capacity corona, output electric current is twice times of industrial frequency power, and effectively control back-corona phenomenon.
    5. Good sparking control and extinguish sparking within 30us
    6. Advanced control concept, integrated control for high and low voltage, keep rapping when power failure and rapping with reducing power function make dust collecting efficiency improved greatly.
    7. Perfect remote monitoring function.
    8. Green power supply, little influence to state grid of power, no pollution to grid, and it can be used in bad jobsite surroundings.

    Ⅱ. Principle of high frequency power

    three main component：converter, high frequency TR, controller  

    Ⅲ. Output waveform of high frequency power高频电源输出波形
    3.1 waveform of secondary voltage

    pure DC power supply and intermittent pulse power supply 

    3.2 comparison of output between high frequency and industrial frequency power

    (1)High frequency power can supply much higher output voltage, up to 1.3 times of output voltage of industrial frequency power.
    (2)High frequency power can supply much higher output current, up to 2 times of industrial frequency power.
    (3)High frequency power can increase corona power effectively, improve dust collecting efficiency greatly.