Electrostatic Precipitator Power Supply

The HVES-03D High Frequency Power Supply is high-voltage power system specially designed for Electrostatic Precipitators (ESP). Utilizing advanced IGBT inverter technology, DSP+FPGA digital control architecture, and high-frequency transformer rectification technology, the HVES-03D significantly improves dust collection efficiency while reducing energy consumption compared with traditional SCR-controlled transformer rectifier systems.
Designed for demanding industrial environments, the HVES-03D provides stable high-voltage DC output up to 72kV and supports intelligent pulse power operation, making it an ideal solution for power plants, cement factories, steel mills, chemical plants, and other industrial emission control applications.

The operating location must be free of conductive or explosive dust, as well as gases that corrode metals or damage insulation; No severe vibration or shock; vertical tilt not exceeding ±5%;

Available Models

Based on the topology of the power converter, the high-frequency power supply employs a hybrid modulation scheme combining PWM (Pulse Width Modulation) and PFM (Pulse Frequency Modulation). The main circuit operates in series resonance to form a current source. PFM control is the primary method, supplemented by PWM control, with the switching frequency used to regulate the voltage and current of the high-voltage electric field in the electrostatic precipitator. The HVES-03D high-frequency power supply primarily supports two control modes: continuous supply mode and pulse group supply mode.

1. Continuous Supply Mode
In continuous supply mode, the system controls the power supply's output power at a constant pulse frequency, producing a pure DC voltage output with minimal ripple. This pulse frequency is adjustable and corresponds to the "Manual Period" parameter provided by the host monitoring system.

Figure 1. Continuous Power Supply Mode

2. Pulsed Power Supply Mode
When the electric field is powered by a series of pulses, the system outputs a sequence of high-frequency pulses followed by a sequence of low-frequency pulses, forming a single pulse cycle. Therefore, in the pulsed power supply mode, the output voltage and current peaks of the high-frequency power supply are determined by the high-frequency (high-energy) pulse period, the number of high-frequency (high-energy) pulses, the low-frequency (low-energy) pulse period, and the number of low-frequency (low-energy) pulses, as shown in Figure 2.

Figure 2. Pulse Power Supply Configuration

3. Energy Conservation and Emission Reduction

When a high-frequency power supply operates in pulse mode, the frequencies and number of high-frequency and low-frequency pulses can be adjusted to suit different electric fields and operating conditions. By altering the duty cycles of these pulses throughout the entire cycle, a power supply waveform optimized for the current operating conditions is generated.

Figure 3. Comparison of Waveforms for Different Power Supply Methods

The HVES-03D combines high-frequency inverter technology, intelligent digital control, pulse power optimization, and industrial-grade reliability to deliver superior electrostatic precipitator performance. It helps industrial facilities achieve lower emissions, reduced energy consumption, and compliance with increasingly strict environmental regulations.

Whether upgrading an existing ESP system or designing a new dust collection installation, the HVES-03D provides a high-efficiency, energy-saving, and reliable power solution.