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Recent content by neluvel

  1. neluvel

    Start-up the synchronous motor with brushless excitation

    Thank you all.
  2. neluvel

    Start-up the synchronous motor with brushless excitation

    I give you more information about the principal scheme which I have used. At start-up the field has an alternating voltage causing to flow first through SCR-T2 and the discharge resistor. On the next half cycle, current flows through the diode D7 and discharge resistor. The control circuit...
  3. neluvel

    Start-up the synchronous motor with brushless excitation

    We have 6 synchronous motors (5000kW) with brushless excitation. We have used a scheme with 6 diodes (for normal operation), 2 thyristors, 1 diode, 1 power resistor and 1 electronic module, which control the rotor frequency (for start-up in asynchronous regime ~ 5 sec.). In the 5 sec. the...
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