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In this paper, an architecture of a single-stage power factor corrected AC-DC converter controlled by a high voltage resonant controller IC L6598 is proposed as LED street lighting driver. The converter is formed by the integration of two boundary conduction mode (BCM) boost circuits and a half-bridge LLC resonant circuit. The converter adapts dual half-wave rectifiers at the output side that supply...
This paper proposes the implementation of a singlestage AC-DC converter using a high voltage resonant controller IC L6598 for driving a street lighting system. The converter is formed by integrating two boost circuits and a half-bridge type LLC resonant circuit. Both boost circuits work in boundary conduction mode (BCM) satisfying the natural function of power factor correction (PFC) of the converter...
This paper presents a comprehensive analytical subdomain model together with its field solutions for predicting the magnetic field distributions in surface-mounted permanent magnet (PM) machines. The tooth tips and slotting effects during open-circuit, armature reaction, and on-load conditions are considered when deriving the model and developing its solutions. The model derivations and field solutions...
This paper presents a complete and improved analytical subdomain model for predicting the magnetic field distributions in surface-mounted permanent magnet (PM) machines accounting for tooth-tips and slotting effect, during open-circuit, armature reaction and on-load conditions. The model analytical derivations and field solutions are extended to overcome the shortcoming in previous subdomain model,...
This paper presents a new topology based on the series resonant converter (SRC) for high-voltage application. The proposed topology consists of two series resonant tanks. Each series resonant tank is built up by connecting a tank capacitor in series to a high-voltage transformer with the leakage inductance of the high-voltage transformer is absorbed as resonant inductor. Therefore, two high-voltage...
This paper presents a novel topology based on the zero current switching series resonant (ZCS-SR) converter for high-voltage application. The proposed topology consists of two series resonant tanks. Each series resonant tank is built up by connecting a tank capacitor in series to a high-voltage transformer with the leakage inductance of the high-voltage transformer is absorbed as resonant inductor...
All busbar systems are subjected to electromagnetic forces which may cause permanent mechanical deformation and damage if large electromagnetic force occurs due to short-circuit current. Therefore, the predictions of electromagnetic force on the three-phase busbar system is very important, especially to analyze it effect on the mechanical structure of busbar system. In this paper, two finite element...
This paper reported the experimental result of breakdown voltage characteristics of Refined, Bleach and Deodorized Palm Olein (RBDPOlein) with 10–50% of Envirotemp FR3 oil (FR3) mixture. The experiment was conducted at the temperature of room temperature (26°C–27°C), 40°C, 50°C, and 60°C under quasi-uniform electric field of AC applied voltage. Experimental result revealed the increases trend of breakdown...
Each busbar conductor of a phase is subjected to a force due to the short-circuit currents. In this paper, the electromagnetic forces affected by the short-circuit current in three-phase busbar conductor are calculated in vertical and horizontal arrangement. The short-circuit current densities are calculated mathematically. The calculations are performed by assuming a peak value of steady-state ac...
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