Sachin CHANDELKER

Project: GEN 4 11 kW Unidirectional On-Board Charger (OBC) for BMW
Dec 2020 – Jul 2024

• Conducted in-depth failure analysis, including worst-case and Monte-Carlo simulations, leading to the identification of root causes and the implementation of corrective actions, reducing failure occurrences.
• Characterized three-phase and single-phase Power Factor Correction (PFC) circuits, performing high-voltage testing to ensure system robustness in extreme conditions.
• Designed and validated Flyback and Forward converters, optimizing transformer performance and overall system efficiency.
• Developed and validated Buck converter circuits, ensuring reliable voltage regulation and efficient power conversion.
• Implemented Control Pilot and Proximity Pilot functions, ensuring compliance with electric vehicle (EV) charging standards and enhancing safety.
• Designed and validated current measurement functions for both AC and DC sides, improving system monitoring and protection.
• Developed and tested PFC and LLC driver circuits, ensuring stable power control under varying load conditions.
• Designed voltage measurement functions to ensure accurate system diagnostics and control feedback.
• Developed temperature measurement functions, enhancing thermal management and component protection in high-power environments.
• Created hardware-software interface (HSI) for DSPs, improving communication between hardware and embedded control systems.
• Simulated DC Link capacitor passive discharge, optimizing discharge time and enhancing safety.
• Calculated ADC sampling times and simulated performance, ensuring accurate data acquisition for control algorithms.
• Reviewed Bill of Materials (BOM), identifying cost-saving opportunities and ensuring compliance with industry standards.

Project: GEN 4 11 kW Bi-directional On-Board Charger (OBC) for Stellantis
Aug 2024 – Present

• Performed high-voltage testing to evaluate the thermal behavior of the system, ensuring reliability under various operating conditions.
• Designed the Isolation Monitoring function to support vehicle-to-load (V2L) functionality, ensuring proper safety and operation during bidirectional energy transfer.