The variable speed drive generally uses a 4-level motor, the base frequency operating point is designed to be 50Hz, the frequency is 0-50Hz (speed 0-1480r/min), and the motor runs at constant torque, frequency 50-100Hz (speed 1480-2800r/min). The motor runs at constant power within the range of min), and the entire speed regulation range is (0-2800r/min), which basically meets the requirements of general drive equipment. Its working characteristics are the same as those of the DC speed regulating motor, and the speed regulation is stable and stable. If you want to increase the output torque within the constant torque speed regulation range, you can also choose a 6-level or 8-level motor, but the motor size is relatively large. Since the electromagnetic design of the variable speed drive adopts flexible CAD design software, the fundamental frequency design point of the motor can be adjusted at any time, and we can accurately simulate the working characteristics of the motor at each...