A bridgeless PFC converter for on-board battery charger

Abstract

This paper presents a bridgeless SEPIC topology with Power Factor Correction (PFC) to charge electric vehicle battery. The converter offers a few advantages such as reduce total component count and reduction of conduction loss during the conversion AC to DC, hence higher overall system efficiency. The PFC converter operated under continuous conduction mode (CCM) with average current mode control strategy. The model is built and simulated in MATLAB. From the simulation study, it is found that the proposed topology and the proposed control strategy provide a promising result.

A Fuzzy Controlled SEPIC-ZETA Converter with Single Stage Operation for Application in Electric Vehicle

“…The switching of the S3 is done at very high frequency until the charge from the machine is completely transferred to the battery making it to stop. The passive element parameter selection for the SEPIC-ZETA converter [5] [7] are taken with respect to input voltage (Vg), battery voltage (Vb) and switching frequency (fs).…”

“…The compares signals of reference and measured values are fed to current controllers which are PI controllers. These controllers calculate the required value for generation of reference signal [5] with which the switches are operated. All the generated values from the controllers are duty ratios (D) which are compared to high frequency (20kHz) sawtooth wave, generating pulses for driving the power electronic switches.…”

Modelling of lithium‐titanate battery with ambient temperature effect for charger design

“…For an ideal function, the value of RMSE is equal to 0 while R-square is equal to 1. Based on the analysis, it is sufficient to formulate f 1 (T ) by using three exponential terms and a constant, and f 2 (T ) by using two exponential terms and a constant, where The values of b 1 -b 7 and c 1 -c 5 in (10) and (11) are as tabulated in Table 6.…”

“…Over the years, research and development on battery charger has been done by using advanced power electronics and control strategies [8]. For instance, the switched-mode power converters, such as buck converter [9], boost converter [10], single-ended primary inductance converter [11], series-resonant converter [12][13][14], and phase-shift full-bridge converter [15,16], have been applied in battery charger applications. Generally, constant-current and constant-voltage charging scheme is applied in the conventional battery charger.…”

“…The model is capable of simulating the constant-current charging profile at a fixed ambient temperature. It is suitable for both small-signal analysis and large-signal simulation [11]. However, the effect of various ambient temperatures is not considered in this model.…”