Abstract
This paper reports the converter topologies which are employed for better Power Factor Correction at the input side. The Power Factor Correction is an important factor when considering the Power Quality. Based on the converter topologies, the Bridgeless converters are preferred in order to reduce the number of switching devices, losses associated with it and improve the Power Quality further more. This paper investigates about the Power Factor performances and conduction losses of the Bridgeless Power Factor Corrector Converters which see through the benefits and limitations by analyzing the Bridgeless Buck-Boost Converter, Bridgeless SEPIC converter and Bridgeless CUK converter. The resultant voltage is fed to the BLDC motor which is rapidly replacing the Induction motor for its better operating characteristics. These strategies are being analyzed using the MATLAB/Simulink software and the results are verified through the experimental analysis. The converter choice is preferred through the performance characteristics and Power Factor Correction at the supply. The Power Factor obtained should be within the acceptable limits under IEC 61000-3-2 standards.
Highlights
There are two factors that provide the quantitative measure for the quality of power supply in an electrical network
This paper investigates about the Power Factor performances and conduction losses of the Bridgeless Power Factor Corrector Converters which see through the benefits and limitations by analyzing the Bridgeless Buck-Boost Converter, Bridgeless SEPIC converter and Bridgeless CUK converter
The Total Harmonic Distortion (THD) of supply current at ac mains with output power for the proposed scheme of the Bridgeless (BL) buck-boost converter fed BLDC motor drive is achieved within the IEC 61000-3-2 limits
Summary
There are two factors that provide the quantitative measure for the quality of power supply in an electrical network. This paper investigates the Bridgeless Cuk, Bridgeless SEPIC, Bridgeless Buck-Boost converters These converters individually perform well with improved power factor but have some merits and demerits when comparing each other converters [10]-[12]. The conduction losses and the thermal stress across the switch get reduced and thereby increase the efficiency of the converter. It requires a additional gate drive transformer, the capacitance and inductance are needed for further reduction in the stress across the switch. The absence of Diode Bridge Rectifier and each diode for each current flow path reduces the conduction losses and improves the efficiency of the converter. The PIC controller is used for its good performance [13] [14]
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