The Energy Saving Frequency Conversion Combined Control System uses a variable frequency drive to regulate AC motors by adjusting frequency and voltage for precise speed and torque control. With pulse width modulation (PWM) and advanced speed control, it enables variable speed operation of the electric motor, reducing the energy required and operating costs. This control system helps reduce energy consumption, resulting in significant energy savings, improved energy efficiency, and lower maintenance costs, while optimizing motor speed in alternating current (AC) applications.