| Abstract |
This paper presents a comprehensive study on fault-tolerant and redundant HV/LV DC-DC LLC converter designs for Autonomous Drives (AD) L4/L5 EVs, medical applications, and aircraft. The main goal is to ensure high reliability and safety through a fail-operational mechanism. These designs address safety requirements for consistent LV power supply in essential EV functions like power steering, braking, acceleration, airbag activation, and controller power supply. The fail-operational LLC topologies support a 1.8kW, 400V system with an input voltage range of 290V to 490V, providing reliable 12V LV supply. Extensive PLECS analysis demonstrates significant advancements in safety and reliability, promising improved performance for AD L4/L5 EVs. |
