ELECTRONIC STARTING AND OPERATING CONTROL SYSTEM FOR A SINGLE-PHASE SYNCHRONOUS MOTOR WITH A PERMANENT MAGNETIC ROTOR, ALSO IN CASE OF FAILURE

摘要

Method for starting and operational regulation of the one-phase synchronous motor (1) with rotor (9) with permanent magnets, whilst this one-phase synchronous motor (1) is on the stator (2) equipped with at least one in series with the source of alternating voltage connected coil (5, 6), at least one sensor (10) of the rotor (9) magnetic field, sensor (12) of the stator current, sensor (14) of the connecting voltage, electronic switch (11) for phase regulation of the connecting voltage and electronic unit (13) for processing the signals from the sensors (10, 12, 14) and controlling the electronic switch (11). After the expiring of the time retainer, which starts with transition of the alternating connecting voltage through the zero and determines the intensity of the current, the electronic unit (13) activates the electronic switch (11) on the current to the stator (2) if the amplitude of the signal from the sensor (10) of the magnetic field is in the frame of pre-determined firing ranges represented by the sizes of the amplitudes and the polarity of the half-wave of the alternating voltage makes current from which the starting moment results.