HV Architecture

The High Voltage (HV) subsystem…..

Relevant Regulations

TODO

Hardware Components

https://cloud.wikis.utexas.edu/wiki/spaces/LHRSOLAR/pages/359697952

• Controls motor & motor precharge contactors using inputs from driver controls

• Monitors precharge board outputs to ensure safe HV state

• Sends torque command to motor controller based on pedal state

https://cloud.wikis.utexas.edu/wiki/spaces/LHRSOLAR/pages/453148675

• Interfaces our HV system with the Elcon HK-MF-108-32 charger

• Handles CAN communication between the charger and BPS

• Boosts charger 12V output to 24V to power the BPS

https://cloud.wikis.utexas.edu/wiki/spaces/LHRSOLAR/pages/484769823

• Contains precharge resistors to limit inrush current to Motor Controller & MPPTs

• Uses isolated amplifiers to measure voltage on either side of resistors

• Passes through 2x contactor drive/sense from VCU

https://cloud.wikis.utexas.edu/wiki/spaces/LHRSOLAR/pages/484769832

• Converts 24V to 12V power for the motor controller & provides power protection

• Uses motor controller temperature CAN messages to control cooling fans

Software Architecture

TODO