The paper considers development of a sensorless driver for a synchronous electric motor with permanent magnets is considered. The disadvantage of such popular methods for controlling AC motors as vector control and direct torque control is the use of a mathematical model of the motor. The proposed approach eliminates the need to use a mathematical model of the electric motor in the control process. This makes it possible to significantly simplify the structure of the regulator. The proposed method of amplitude-frequency-phase control allows achieving high levels of energy efficiency. The solution to the problem of starting an electric motor under load without using rotor position sensors is also shown. The principles of constructing the structure and circuit design of the regulator are described and the main results of modeling are presented. The authors list the main advantages of the proposed solution and describe the scope of its application.