http://localhost:8080/xmlui/handle/123456789/6 Thu, 09 Apr 2026 05:57:07 GMT 2026-04-09T05:57:07Z http://localhost:8080/xmlui/handle/123456789/162 Title: BATTERY CHARGER FOR ELECTRIC VEHICLES WITH MODIFIED POWER FACTOR CORRECTED BRIDGELESS CONVERTER Authors: KRISHNAPRIYA VINOD, Dr. P JENO PAUL; ANNA BABY, REJOICE THOMAS PAUL; SANJU B Abstract: This paper presents modified bridgeless single-stage converter to charge light Electric vehicle (EV) battery. The main aim is to improve the efficiency and attain the Unity Power Factor (UPF) of the bridgeless converter for battery charger. The converter has a single stage power conversion with tapped inductor boost converter. The converter is having a bridgeless configuration that minimizes the conduction losses of the input diodes. In this configuration the voltage is boosted using the converter and easily charge the EV battery. In two-stage converter the losses are more, and the configuration is bulky. In the proposed charger the conduction losses can be reduced, attain voltage gain, PF and efficiency can be improved. Hence the single stage bridgeless converter with boost converter based on tapped inductor is used to improve the above-mentioned parameters. The existing and modified system is verified using MATLAB Simulink software and the results proves the effectiveness of the charger Tue, 01 Jan 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/162 2019-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/161 Title: Comparison of Power Factor Correction Controllers for CRM Boost Converters Authors: KRISHNAPRIYA VINOD, ANNA BABY Abstract: This paper presents modified critical conduction mode (CRM) boost converter for low and high-power applications. The main aim is to improve the power factor (PF) reduce the total harmonic distortion (THD) of the CRM boost converter. The converter consists of EMI filter, bridge rectifier and a boost stage. The power factor correction (PFC) in ac-dc power conversions can improve PF and reduce THD. The CRM mode for this converter makes switches turn-on at zero current crossing and no reverse recovery losses for diodes. In this configuration the PI controller improves the PF and lowers THD value. The boost converter with variable on time (VOT) controller makes the circuit bulky and losses are more. In the proposed converter the PF and efficiency can be improved. Also, the controller reduces the size of the circuit and lower the THD. Hence CRM boost converter PFC controller based on PI controller is used to improve the above-mentioned parameters. Using MATLAB Simulink software, the existing and the modified controller is verified, and results proves the effectiveness of the controller for the CRM boost converter. Keywords: Critical Wed, 01 Jan 2020 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/161 2020-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/160 Title: A comparative study on Novel adaptive control scheme for PV module integrated converter Authors: Ashna Jose, Sijo George Abstract: Strive for efficient and cost-effective photovoltaic systems motivated the comparison of switching methods in converter. The work concluded in a novel adaptive control scheme as a better method for a DC-DC converter with maximum power point tracking (MPPT). This PV module integrated converter has high energy efficiency over a wide range of operating conditions. The switching control method used here is the combination of Pulse width modulation (PWM) and Pulse frequency modulation (PFM) methods. Pulse frequency modulation has done as a function of solar irradiance. Optimal switching frequency step is determined from the simulation of DC-DC Converter with efficiency analysis at different switching frequencies. To get high power quality at all conditions, interleaved converter cells are included. Simulation results show the increased value of efficiency from the conventional PWM method. Mon, 01 Jan 2018 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/160 2018-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/159 Title: MODIFIED THREE PHASE MULTILEVEL INVERTER WITH REDUCED NUMBER OF DC SOURCES AND SWITCHES Authors: Rejoice Thomas Paul, Sijo George; Dr Jeno Paul, Sanju; Krishnapriya Vinod Abstract: This paper presents a modified three phase multilevel inverter with reduced number of dc sources and switches. The main objectives are to design and implement a multilevel inverter with reduced component count and to achieve reduced switching loss, size, cost and improved efficiency. Multilevel inverter is the core of this system. Multilevel inverters are used in the power system compensators and power quality conditioners to reduce the converter harmonics. But existing multilevel converters are having higher component count, high cost and high switching loss. The paper a modified multilevel inverter which will reduce the component count, thus increasing the efficiency, reducing the switching loss, size and cost. Matlab simulation based result proves the validity of the proposed system. Sat, 01 Jul 2017 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/159 2017-07-01T00:00:00Z