High-voltage direct-current breaker based on Buck-Boost converter topology and fault removal method thereof

High-voltage direct-current breaker based on Buck-Boost converter topology and fault removal method thereof

  • CN 104,767,169 A
  • Filed: 04/15/2015
  • Published: 07/08/2015
  • Est. Priority Date: 04/15/2015
  • Status: Active Application
First Claim
Patent Images

1. , based on a novel unidirectional variable-pressure high voltage DC breaker for One Buck-Boost converter body topology, it is characterized in that, comprise high voltage DC breaker and control system,High voltage DC breaker comprises:

  • the IGBT switch module group S1 be connected with positive input terminal, IGBT switch module group S1 output is connected with inductance L and diode die chunk group D1, the inductance L other end is all connected with positive output end with the positive pole of diode (led) module group D1, is provided with input capacitance C between positive input terminal and negative input end i, between positive output end and negative output terminal, be provided with output capacitance C o;

    Control system comprises;

    the outer shroud pi regulator connected successively, outer shroud saturation element, inner ring pi regulator, inner ring saturation element, PWM generator, also comprises outer shroud low pass filter LPF and inner ring low pass filter LPF;

    High voltage DC breaker positive output end voltage v owith output voltage reference value after outer shroud low pass filter LPF outer shroud pi regulator is input to after comparing;

    Inductive current i in high voltage DC breaker lthe inner ring inductive current reference value exported with outer shroud saturation element after inner ring low pass filter LPF compare, the result input inner ring pi regulator compared;

    A pilot controller is also provided with between described inner ring saturation element and PWM generator.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×