The mechanical characteristic of a DC motor was illustrated when the voltage supplied to the armature winding changed. The thyristor methods for controlling a DC motor speed are listed: single-phase semi-controlled converter (for motors with power up to 15 kW) single-phase drive with a controlled converter (available to operate in two quadrants) three-phase semi-controlled converter three-phase controlled converter single-phase reverse converter realized by connecting two single-phase converters (ensuring multi-mode operation) three-phase reverse converter realized as a single-phase converter. The DC motor control systems are described and simulation models in the MATLAB Simulink program are presented. There is considered the thyristor control of DC motors of the ship electric drive. The conventional speed control methods commit power losses in the system, which can be minimized by using the power electronics strategy. Due to the progress of industrial electronics and technology it has become possible to develop more efficient motor control circuits. The article considers the problem of the DC motors control that are often used in many electric drive systems.
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