Implementation of Single Phase Soft Switched PFC Converter for Plug-in-Hybrid Electric Vehicles

Abstract

This paper presents a new soft switching boost converter with a passive snubber cell without additional active switches for battery charging systems. The proposed snubber finds its application in the front-end ac-dc converter of Plug-in Hybrid Electric Vehicle (PHEV) battery chargers. The proposed auxiliary snubber circuit consists of an inductor, two capacitors and two diodes. The new converter has the advantages of continuous input current, low switching stresses, high voltage gain without extreme duty cycle, minimized charger size and charging time and fewer amounts of cost and electricity drawn from the utility at higher switching frequencies. The switch is made to turn ON by Zero Current Switching (ZCS) and turn OFF by Zero Voltage Switching (ZVS). The detailed steady state analysis of the novel ac-dc Zero Current-Zero Voltage Switching (ZC-ZVS) boost Power Factor Correction (PFC) converter is presented with its operating principle. The experimental prototype of 20 kHz, 100 W converter verifies the theoretical analysis. The power factor of the prototype circuit reaches near unity with an efficiency of 97%, at nominal output power for a˘10% variation in the input voltage and˘20% variation in the snubber component values.

Design and Optimization of an Efficient (96.1%) and Compact (2 kW/dm³) Bidirectional Isolated Single-Phase Dual Active Bridge Ac–Dc Converter

“…An extensive review of uniand bidirectional single-phase PFC rectifier topologies with improved power quality is presented in [7], including some variants with galvanic isolation. Examples of soft-switched, single-phase, non-isolated, bidirectional PFC rectifiers are the boost-type PFC with passive snubber cell presented in [8] and the multi-cell totem-pole PFC described in [9,10], which employs a triangular current mode (TCM) modulation scheme. Extensive overviews, topology surveys, analyses, and comparative evaluations of common topologies used for the isolated dc-dc converter stage are presented in [11][12][13][14][15][16][17][18], inter alia including numerous (soft-switching) dual active bridge (DAB) topologies and Figure 1.…”

“…Furthermore, aluminium is considered for the heat sink material, defining the thermal conductivity value λ HS = 210 W/mK. Figure 13(a) depicts the relation between R th,S-Am,tot (= 0.5 • R th,S-Am ) 8 and the two geometric parameters n and k that are independently varied. The performance indices and parameter values for the resulting (optimal) heat sink design are given in the top inset of Table A.4 of Appendix A.1.…”

Sliding Mode Control of the Isolated Bridgeless SEPIC High Power Factor Rectifier Interfacing an AC Source with a LVDC Distribution Bus

“…This fact reduces the negative impact on the power quality of AC distribution networks caused by the increasing introduction of new energy processing technologies such as electric mobility and efficient lighting, among others. For example, hybrid electric vehicles need battery chargers, which must not only provide high power density and plug-and-play operation [2], but also meet the requirements of the power quality international standards. In the same context, it is possible to integrate the HPF rectification function in multi-mode converters, which can provide bidirectional power transfer capability or multiple power conversion types (AC-DC, DC-DC, and DC-AC), which eventually has an important impact on the power density of the converter in the electric vehicle [3].…”

A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique

“…Uninterruptible power supplies (UPSs) are employed to protect critical loads from a short or long interruption [1][2][3][4][5]. One of the main control purposes of a UPS is precisely regulating the output voltage, keeping it as sinusoidal as possible with a low total harmonic distortion (THD).…”