Software
~ most of the subsystems are completely electronic and under direct software control
~ these systems are designed as an integrated system, the way complex network and computer systems are designed today
~ when you shift gears or accelerate, the PEM translates driver commands into precisely timed voltages
~ telling the motor to respond with the proper speed and direction of rotation
~ PEM also controls motor torque, charging, and regenerative braking
~ it monitors things like the voltage delivered by the ESS, the speed of rotation of the motor, and the temperatures of the motor and power electronics
~ PEM controls over 200 kW of electrical power during peak acceleration

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