Ram Babu Thogaru

1. Design and Development of Gatedrivers for 2300V Si and SiC Power Modules

Designed gatedrivers for 2300V Si and SiC power modules, optimizing interface between low-power control signals and high-power switches, ensuring safe operation through galvanic isolation. Implemented PSUs in LTspice, designed flyback transformers, selected hardware components, prepared test plans, and created design documents.

4. Design and Development of a 45kW High-Power Wireless Power Transfer System.

• The project focuses on the Design, Modelling, and implementation of a 45kW Wireless Power Transfer (WPT) system for high-power battery charging applications (400V nominal). Played main role on implementation of utilizing a 3-phase 400Vac input, the system incorporates high-frequency resonant magnetic coupling to transfer energy efficiently across a variable air gap (100mm to 250mm) and performed through Ansys simulations. The system is designed to deliver a maximum output of 100A at 400V DC, providing a robust, cable-free charging solution for electric vehicles.

2. Design and analysis of a 40-450kW High-Power isolated LLC resonant converters

•The project involves the analysis of a high-power, high-voltage isolated LLC resonant converter tailored for extreme power conversion applications, likely EV fast-charging stations and high-voltage battery storage. In this project played a role of loss thermal analysis for power semiconductor devices through PLECS simulations for the range of Input Voltage: 1050-1450V, and Output voltage: 650-850V.

3. Lifetime Estimation of Power Capacitors (for Film & Electrolytic Caps)

Predicted lifespan of power capacitors (Aluminum Electrolytic and Metallized Film) under various electrical and environmental conditions. Developed a MATLAB/Simulink simulation model to estimate remaining useful life based on converter mission profile.

• Feasibility study of selecting Power capacitors from various manufacturers for automotive applications based on their electrical, thermal, and mechanical properties.

Designed and tested metalized film capacitors for automotive applications.

• The project involves on Film capacitors utilizing dielectric plastic films (polypropylene) are favored for their self-healing properties, high ripple current handling, low ESR, and longevity. I played main role for their design and testing are tailored specifically to their application, which includes high-voltage automotive DC links and filtering (PCCLP).

Design and Analysis of Solar PV-BESS fed DC Microgrid Interfaced with High Gain DC-DC Converters

• Resiliency enhancement of grid-tied parallel-connected 400V bus and 200V bus, integrated through bidirectional DC-DC converter in presence of static load, dynamic load, and CPL, using optimized droop control strategy, under various disturbances is implemented using PSCAD environment and validated through hardware prototype developed in the laboratory.

• Improvement in voltage regulation and current sharing of parallel-connected 400V bus and 200V bus, integrated through bidirectional DC-DC converter in presence of static load, dynamic load, and CPL, using optimized droop control strategy, has been proposed and the system is implemented in PSCAD

• Analysis of 400V DC bus integrated with EVs (three-wheeler public vehicles) along with generalized loads in view of the demand response program with G2V/V2G concept is implemented using PSCAD environment.

• The 40V Solar fed 400V DC Microgrid interfaced with high gain DC-DC converter hardware prototype for 400W developed in the laboratory.