Phase shift voltage regulating control technology in high voltage electrostatic precipitator power supply
by Jiahui Li; Zhiyu Zhang; Huiyue Zhang; Zhengrong Jiang
International Journal of Power Electronics (IJPELEC), Vol. 12, No. 2, 2020

Abstract: With the people's health requirements and the development of industry, the electrostatic precipitator is widely used in many industrial areas, such as smelting, cement production, electric boilers and so on, as well as in household air purification. In order to improve the frequency of the converter and reduce the switching loss, a phase shift voltage control method based on PID control is introduced in this paper. A serious of problems are also be solved by the method, such as the uncertainty of electrostatic precipitator load, the characteristics of nonlinear and time-varying, and the uncertainty of stray parameters of high frequency transformer which is the core device of the electrostatic precipitator power supply. This method can make use of the stray parameters of high frequency transformer reasonably, so that the power device can work in soft switching state. In the same time, it is suitable for industrial mass production with lower cost but good effect. The results of simulations and experiments show that this voltage modulation mode makes the dusting power supply output 60 kV voltage stably, and has good dynamic performance, which makes the dust removal system more robust.

Online publication date: Wed, 05-Aug-2020

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