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The electrostatic precipitator has a long history spanning over 100 years and remains one of the most effective technologies for industrial dust removal. It offers high efficiency, wide adaptability, low operating costs, and is safe and reliable. Additionally, it does not produce secondary pollution, making it the preferred choice for many industries. However, with increasingly stringent emission standards, many existing electrostatic precipitators are no longer sufficient and require technical upgrades. New projects also face challenges in meeting these higher requirements.
While increasing the size of the precipitator can improve efficiency, this approach is often costly and inefficient. Therefore, modern solutions like advanced high-voltage power supplies have become essential. Three-phase power frequency, high-frequency, and pulse-stacked DC power supplies offer new opportunities to enhance performance and meet today’s environmental regulations.
High-frequency multi-high voltage pulse power supply systems provide both direct current (DC) and DC superimposed pulse (DC+PULSE) power. These systems can generate multiple voltage waveforms, allowing flexible control of RMS, peak, and frequency values. This adaptability ensures optimal performance under various conditions.
When using high-frequency power, the precipitator is continuously charged near breakdown voltage. For high-resistance dust, this helps prevent back corona by ensuring faster neutralization of charges on the anode plate. The pulse voltage enhances charging efficiency, leading to better dust collection.
This technology combines multiple power modes—DC, intermittent, and DC+PULSE—offering fast pulse front times that create strong electric fields. These fields dominate electron charge mechanisms, improving particle charging efficiency. High-voltage pulses increase the electric field strength, generating more free electrons and enhancing dust collection.
Key features include green power supply, multi-voltage superposition, high-frequency narrow pulses, intelligent control, closed-loop energy-saving, anti-corona detection, fine dust capture, high specific resistance dust collection, desulfurization and denitrification improvements, energy savings, structural design, and comprehensive protection functions.
The system works by converting 380V AC into DC through a three-phase bridge rectifier and LC filter, then using IGBT inverters to generate high-frequency pulses. These are stepped up via transformers and rectified to provide high-voltage DC for the precipitator. The controller adjusts based on feedback to maintain optimal performance.
This technology is widely used in industries dealing with high-resistance and high-concentration dust, as well as in applications requiring improved desulfurization and denitrification. It not only meets emission standards but also reduces energy consumption significantly. The design is compact, efficient, and robust, suitable for outdoor environments and harsh conditions.