Diode structures for controlling thyristor three-phase starters.

Abstract

For reliable control of thyristor starters of asynchronous short-circuited motors, diode circuits are used that create a three-phase system of opening pulses. The inter-electrode voltage is used as an internal source of control signals. The methodology for calculating the parameters of such schemes and the criteria for choosing rational structures are given. The created system of pulses allows opening thyristors in the actuator with a narrow pulse, which follows the change in the phase angle of the load. The developed complete circuits of thyristor starters for asynchronous motors are suitable for practical use. Figures 6. Bibliographic references 2.