1. Tractive System Interface Design
TSI overview:
Hardware:
Provide the high-voltage/high-current path between Battery Packs and Motor Controller System
TSV/GLV isolation interface
Analog throttle interface with plausibility check
Precharge/Discharge circuits
Power up TSAL, RTDS, Motor controller, and Cooling System
Firmware:
Manage drive states and startup/shutdown conditions
Measurement of voltage, temperature and other system characteristics
Data communication via CAN and displayed by VSCADA
Go into drive mode if all occur:
Safety loop is closed
Throttle is Plausible
Throttle is below 0.5V
Brake is pressed
Drive button is pushed
TSI Block Diagram
Throttle Plausibility
Drive State Diagram
TSI Enclosure
TSI PCB, CAN isolator, IMD are mounted on the low-voltage mounting plate
Precharge/Discharge circuits are mounted on the high-voltage mounting plate
GLV and TSV are isolated by a Garolite board
Motor controller are mounted on the high-voltage side
Current measurements made with electromagnetic current sensor on HV+
All wires connected to TSV are protected by resistors (TSMPs) or fuses
Drop out of drive if one of the following occur:
AIRS open
Drive button is pushed
Throttle Implausibility occurs
Throttle control from SCADA tells us to drop out of drive
Throttle and brake are pressed at the same time
Contact information
Project website: sites.lafayette.edu/motorsports/tsi
Faculty Advisors: Prof. Chris Nadovich, Prof. John Nestor