Application of Different Types of High-Voltage Supplies on Industrial Electrostatic Precipitators

Grass, Norbert; Hartmann, Werner; Klockner, M.

doi:10.1109/tia.2004.836298

Cited by 99 publications

(32 citation statements)

References 5 publications

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“…This condition is met if the imaginary part of the resonant network is null (Z IMAG = 0) for the switching frequency, f S . Since Z IMAG is defined in (5), it can be solved for f S as shown in (6). However, it must be noted that f S depends on C X , and, thus, on Ψ:…”

Section: Large-signal Model and Steady-state Conditionmentioning

confidence: 99%

A Digitally Controlled Power Converter for an Electrostatic Precipitator

et al. 2017

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Electrostatic precipitators (ESPs) are devices used in industry to eliminate polluting particles in gases. In order to supply them, an interface must be included between the three-phase main line and the required high DC voltage of tens of kilovolts. This paper describes an 80-kW power supply for such an application. Its structure is based on the series parallel resonant converter with a capacitor as output filter (PRC-LCC), which can adequately cope with the parasitic elements of the step-up transformer involved. The physical implementation of the prototype includes the use of silicon carbide-SiC-semiconductors, which provide better switching capabilities than their traditional silicon-Si-counterparts. As a result, a new control strategy results as a better alternative in which the resonant current is maintained in phase with the first harmonic of the inverter voltage. Although this operation mode imposes hard switching in one of the inverter legs, it minimizes the reactive energy that circulates through the resonant tank, the resonant current amplitude itself and the switching losses. Overall efficiency of the converter benefits from this. These ideas are supported mathematically using the steady state and dynamic models of the topology. They are confirmed with experimental measurements that include waveforms, Bode plots and thermal behavior. The experimental setup delivers 80 kW with an estimated efficiency of 98%.

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Section: Large-signal Model and Steady-state Conditionmentioning

confidence: 99%

A Digitally Controlled Power Converter for an Electrostatic Precipitator

et al. 2017

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“…In principle, there are two main circuits to supply the precipitator sections: one based on switching at low potential and one based on switching at high potential. The pulse energization is used to collect high dust resistivity between 10 11 -10 13 Ω⋅cm [9].…”

Section: Improving Collection Efficiency Using Different Types Of Volmentioning

confidence: 99%

“…The recovery time, to recharge the precipitator can be better controlled with the smaller time steps increments. High frequency power supplies are used experimentally in the last years for normal and medium dust resistivity [2,9].…”

Section: Interdisciplinary Research In Engineering: Steps Towards Brementioning

confidence: 99%

About Improving Collection Efficiency for Industrial Plate-Type Electrostatic Precipitator

Popa

2013

AEF

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Abstract. Plate-type electrostatic precipitators are the largest and most used industrial dusts control, most applications are in the production of electricity (thermoelectric power plants). In many industrial applications, plate-type precipitators have three sections and silicon-controlled rectifier power supplies type. Although, the collection efficiency obtained by these type of precipitators are more than 95%, most of the dust particles with diameter less than 10 µm remain un-collected. To improve the collection efficiency different electrical and/or mechanical options can be used. To improve the collection efficiency of industrial plate-type precipitators, the paper presents two practical options. The first solution would be replacing the power supplies -silicon-controlled rectifier -with other special power supplies (intermittent power supplies, high frequency power supplies) depending on the dust resistivity; the second solution would be to add a new section at precipitator -an expensive solution, usually the last. The technological and electrical sizes, simulated and measured, are presented for the proposed solutions.

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“…There are several improvements in the switched supply compared with the conventional high voltage DC power supply (50 Hz or 60 Hz transformer is adopted). For example, high frequency switching operation will allow: (a) much more precise control over the operating parameters (such as output voltage level, current level, voltage rise times and response to variations in load demand), (b) a reduction in the size and weight of the high-voltage transformer and enhancing the power density of the transformer [1,2].…”

Section: Introductionmentioning

confidence: 99%

Design of High Power Density Transformer

DING¹

2017

dtetr

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Abstract. The traditional high-voltage high-frequency transformer has a drawback of low power density due to the rigorous requirements of high voltage insulation. This paper proposes a new configuration for the magnetic core based on planar EE cores. The parallel connection of planar cores was adopted as a unit, and several units were cascaded to form the high-voltage transformer. The electrical potential distribution of the proposed transformer is more uniform than a traditional transformer, and enables a decrease in the insulation distances. The mechanical configuration of a laboratory prototype is discussed, as well as the electrical, parasitic, and thermal behaviors.

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Application of Different Types of High-Voltage Supplies on Industrial Electrostatic Precipitators

Cited by 99 publications

References 5 publications

A Digitally Controlled Power Converter for an Electrostatic Precipitator

A Digitally Controlled Power Converter for an Electrostatic Precipitator

About Improving Collection Efficiency for Industrial Plate-Type Electrostatic Precipitator

Design of High Power Density Transformer

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