Semi Truck HV-DCDC
The work
The Semi needed 1,000 V from the high-voltage pack brought down to 400 V for its thermal and pneumatic compressors. Rameez architected the conversion system: the mechanical housing, internal busbar distribution, DC filter board, cable harnesses and liquid cooling routing, and how all of it integrates with the vehicle chassis.
He directed the CAD models, fabrication drawings and vendor sourcing, taking the design from ten machined prototypes through full-scale die casting and on to 100 units, with thermal and structural FEA and worst-case tolerance stack analysis behind each step. He also did the hands-on work: bench bring-up and physical validation of the prototype hardware, then integration into the first alpha vehicle builds, troubleshooting system issues as they surfaced.
The first HV-DCDC being installed for test fit
Tesla Semi truck alpha build