Thyristor-controlled regulating transformer for variable voltage boosting

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Thyristor-controlled regulating transformer for variable voltage boosting

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Based on the principle of the regulating transformer booster, a new voltage regulator is described which selects parts of the supply-voltage waveform by means of phase-controlled thyristor switches and thus provides fast and variable voltage boost. Two different types of control are investigated and their performance is analysed with different types of load. Various experiments are done to substantiate the analytical investigation.

Inspec keywords: thyristor applications; voltage control; potential transformers; voltage regulators

Other keywords: regulating transformer booster; voltage regulator; thyristor controlled regulating transformer; equivalent circuit; operation mode; phase control

Subjects: Controllers; Control gear and apparatus; Transformers and reactors; Voltage control

References

    1. 1)
      • E. Friedlander . Voltage flicker compensation with a.c. saturated reactors. GEC J. Sci. & Technol. , 2 , 107 - 114
    2. 2)
      • P.O. Bobo , J.H. Cronin , L. Gyugyi , J.W. Motto . (1974) Static VAr control for voltage support to widely varying utility loads, Power electronics - power semiconductors and their applications.
    3. 3)
      • H. Frank , S. Ivner . TYCAP, power factor correction equipment using thyristor-controlled capacitors for arc-furnaces. ASEA J. , 6 , 147 - 152
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