Design of an LCC Resonant Converter for Furnace Power Supply during Electron Bean Melting

Abstract

High-power converter applications are usually realized using the hard-switching technology under a low-switching frequency condition; moreover, the isolation transformer size must be larger. To reduce transformer size, the switching frequency must be increased; however, this increase directly results in the increase of switching loss. This paper proposes a high-voltage(HV) and high-power supply by using a thyristors-controlled rectifier and LCC series parallel resonant converter (LCC-SPRC). The introduced dc-dc converters are connected in parallel at the input side and in series at the output side, and soft-switching technology is applied to reduce the switching loss by using the frequency control mode. In addition, an equivalent mathematical model of LCC-SPRC with discontinuous current mode1 (DCM1) was analyzed in detail. For obtaining accurate parameters of LCC-SPRC, the Matlab/Simulink software was employed to calculate the system parameters, and provide the system with dynamic simulating curves. The simulation and experimental results verify that the LCC-SPRC design scheme of for supplying furnace power during the electron beam melting (EBM) is feasible in applications.

Modelling a Multilevel LCC Resonant AC-DC Converter for Wide Variations in the Input and the Load

“…8. This is coherent to the application of V IN =800 in (1) and to a narrower range in the intrinsic voltage gain. Fig.…”

“…A significant number of industrial applications require a power supply capable to deliver a DC voltage of tens of kV while transferring a power of tens of kW. Such applications include X-ray generators, electron beam welding machines, or electrostatic precipitators to name a few [1][2][3][4][5]. In all cases, the primary power supply is a three-phase line.…”

Resonant Power Converters for Renewable Energy Applications: A Comprehensive Review

“…Among the highlighted aspects are the design optimization, analysis of operation modes, and performance behavior (Liu et al, 2018;Chen et al, 2020). LCC RPC has been used and experimented in several industrial systems, among them, in battery chargers for PV systems (Rakhi et al, 2014), furnace power supply during electron beam melting (Haifeng and Peng, 2017), x-ray applications (Pernía et al, 2017), and xenon flash lamp simmer circuit (Song et al, 2019).…”

“…It is suitable for fuel-cell power systems (Jin and Ruan, 2006). Besides, it is also widely adopted LCC RPC is suited for high-voltage applications (Abdul-Hakeem et al, 2018) and has been used in battery chargers for PV systems (Rakhi et al, 2014), in furnace power supply during electron beam melting (Haifeng and Peng, 2017), in x-ray applications (Pernía et al, 2017), and for xenon flash lamp simmer circuit (Song et al, 2019) This type of converter is good for use in lowvoltage, high-output current systems, and it can be used in power systems and telecommunication (Bhat, 1994). It is good for applications such as space and radar high-voltage power supplies and it can also be used with a stand-alone wind generator (Bhat, 1997) frequency above the required level for full load operation will main the converter efficiency and confer other desirable features on the converter (Bhat, 1994); there will also be a decrease in the peak current passing through the switches as the load current reduces (Bhat, 1995;Almardy and Bhat, 2011).…”

Performance Measure of LCC Resonant Converter for High Voltage Power Supply

“…Electron Beam Melting Furnace uses LCC Resonant Converter in discontinuous Mode. A linear relationship exists for output voltage at low frequencies and this linearity changes over at higher frequencies for Electron Beam Melting [2]. LCC Resonant Converters has been employed for Electrostatic Precipitators in both Variable frequency control and Dual Control.…”