Asynchronous thyristor electric drive with control in the rotor circuit.
Abstract
A comparative assessment of the most promising asynchronous thyristor drive systems with control in the rotor according to technical, energy, economic indicators and reliability is carried out. It is shown that in electric drives requiring smooth and deep speed control, systems with artificial switching of the thyristors in the rotor are preferable; in drives with frequent start-ups, for which operation at reduced speed is carried out for a short time, it is more expedient to use systems whose rotor circuit is closed by a thyristor switch consisting of three thyristors and included in the zero point break.