Valvoline Global, founded in 1866 and headquartered in the United States, operates within the manufacturing sector, specifically focusing on chemicals and related products. The company employs between 1,001 and 5,000 individuals and has reported significant revenue. Valvoline Global is involved in various technical advancements, as evidenced by their published document on immersion cooling technology. This technical report discusses the impact of immersion cooling on semiconductor thermal distribution in neutral point clamped (NPC) multilevel converters, which are utilized across multiple sectors, including transportation electrification and renewable energy generation. The report highlights the challenges associated with unbalanced loss distribution among semiconductor switches and presents solutions for enhancing thermal management and dielectric insulation capabilities in high-altitude aviation applications. This reflects Valvoline Global's commitment to addressing industry-specific technological challenges and contributing to advancements in electric propulsion and energy efficiency. The limited document corpus indicates a focus on technical innovation in manufacturing processes and product development within the chemical industry.