Equivalent balanced transformer

Equivalent balanced transformer

  • CN 1,090,799 C
  • Filed: 01/25/1994
  • Issued: 09/11/2002
  • Est. Priority Date: 01/25/1994
  • Status: Active Grant
First Claim
Patent Images

1. equivalent balanced transformer, by a star triangle (Yn, D) a wiring three-phase transformer (T1) and a single-phase voltage regulating transformer (T2) are formed;

  • The star triangle (Yn, D) primary coil (A1) of wiring three-phase transformer (T1), (B1), (C1) insert three-phase electrical power system by terminal (A), (B), (C), and terminal (X), (Y), (Z) link to each other, as required ground connection;

    The terminal (a) of secondary winding (a2), (b2), (c2), (y) link to each other, (b), (z) link to each other, and (x), (c) link to each other and ground connection or rail;

    It is characterized in that;

    single-phase voltage regulating transformer (T2) is the self coupling type, and the terminal (b3t) of its coil (b3), the terminal (b5w) of coil (b5) and star triangle (Yn, D) terminal (y) of the secondary winding (b2) of wiring three-phase transformer (T1) links to each other;

    The terminal (b3w) of single-phase voltage regulating transformer (T2) coil (b3), the terminal (b4t) of coil (b4) and star triangle (Yn, D) terminal (b) of the secondary winding (b2) of wiring three-phase transformer (T1) links to each other;

    The voltage of coil (b3) equals the voltage of coil (b2);

    The voltage of coil (b4) equals the voltage of coil (b5), with the relation of coil (b3) voltage is;

    Ub4=Ub5=3-12*Ub3By the terminal (b5t) and earth terminal (c) of coil (b5), the terminal (b4w) of coil (b4) is drawn with earth terminal (c) branch two-phase and is supplied with load.

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