Abstract:

A complete set of electric vehicle drive control algorithm was established to make drive
performances automatically adapt to different driving cycles, and to satisfy the requirements of large torque
starting, high efficiency running, and wide range speed operation. The algorithm is based on the prophase
vector control strategy research for start, running and speed adjust for the salient pole permanent magnet (IPM)
synchronous motor using the vector control strategy. The algorithm integrates the drive motor control algorithm
for different driving cycles using vector control voltage limit and current limit with different control strategies
switching following operating modes. A simulation model and an experimental platform were built under
actual load and operating conditions for an electric vehicle. The results show that the algorithm gives a more
smooth switching control strategy corresponding to different working conditions. Therefore, the feasibility and
effectiveness of the control strategy integration are verified under all driving cycles.

Key words: electric vehicles, synchronous motors, interior permanent magnet (IPM), automotive driving cycle, vector control strategy integration