Abstarct: The value of AC voltage can be changed using phase control converters and AC chopper converter. In phase control converters, switching occurs in each period of the source to remove part of the source waveform before it is loaded. In the phase control converter, the low-order harmonics have a high percentage and also the voltage distortion has a high value. the AC chopper converter change the output voltage using pulse width modulation technique and changes the duty ratio. Using the pulse width modulation technique causes problems such as noise and electromagnetic interference. In this thesis, AC chopper with random pulse width modulation is investigated. random pulse width modulation techniques have been proposed to solve high-frequency switching problems that cause noise and electromagnetic interference. In order to apply random pulse width modulation to the AC chopper, a proposed method is proposed in which the modeling and control method are completely performed. The simulation results shown the performance of AC chopper with random pulse width modulation technique in reducing the harmonic value at the switching frequency and distributing these harmonics over a wide frequency range as well as adjusting the motor speed to the desired value. In order to evaluate the performance of the random pulse width modulation technique under operating conditions, an AC Chopper laboratory specimen is designed and manufactured with all its requirements including input filters, processors, and more. The experimental results of the AC Chopper of the proposed method show its accuracy and good performance.