Electric Tractor Motor Drive Control Based on FPGA

The electric tractor represents the development trend of sustainable and modern agriculture. With the higher energy efficiency and lower pollution, electric tractor research is significant to modern agriculture. As the electric tractor's critical technology, motor drive control directly affects the stability of tractor speed and the accuracy of field work. So this paper presented an electric tractor motor drive control system which was suitable for tractor work characteristic based on Brushless DC (BLDC) motor. Double closed loop PID control with outer speed and inner current loop combined with PWM control was implemented as the motor drive control strategy. The motor controller was designed based on FPGA technique, so hardware used NI myRIO as control core which integrated ARM with Xilinx FPGA, and control program used Lab VIEW as development environment. Indoor experiment was conducted to validate the electric tractor motor drive control design.