Single-phase and three-phase AC stabilized-voltage power source

Single-phase and three-phase AC stabilized-voltage power source

  • CN 103,795,265 A
  • Filed: 02/19/2014
  • Published: 05/14/2014
  • Est. Priority Date: 02/19/2014
  • Status: Active Application
First Claim
Patent Images

1. a single-phase and three-phase ac regulated power supply, it is by single-phase, or 3-phase autotransformer (B), inductance-capacitance filter (L1C1, L2C2), two-way full control electronic switch (S1), two-way half control electronic switch (S2) and control triggering electric circuit composition, single-phase autotransformer winding has 2 terminations (2, 6) and 2 centre taps (4, 5), 3-phase autotransformer winding connects into star by 3 windings identical with single-phase autotransformer, two-way full control electronic switch (S1) is made up of 2 full control devices and 2 rectifying tubes, two-way half control electronic switch (S2) is made up of the thyristor of two reverse parallel connections, it is characterized in that:

  • single-phase and three-phase ac regulated power supply is with two full control device (V13 that regulate in two-way full control electronic switch (S1), recently regulation output voltage of break-make is controlled in cutting V4), each has 1 ac input end (1) to be connected with 1 filter inductance (L1) mutually, the other end (3) of filter inductance connects filter capacitor (C1), two-way half control electronic switch (S2), one end of two-way full control electronic switch (S2), two-way half control electronic switch (S2) other end is connected with a termination of autotransformer (B) (6), two-way full control electronic switch (S1) other end is connected with the low centre tap end of autotransformer (B) (4), the high centre tap of autotransformer (B) (5) is connected with filter inductance (L2), filter inductance (L2) other end is connected with filter capacitor (C2) one end and alternating current steady voltage plug output (7), two filter capacitor (C1, C2) other end and alternating current steady voltage plug input, output common port (2) connects.

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