Zero-current non-arcing switching type voltage-regulating and voltage-stabilizing device and voltage compensating method thereof

Abstract

The invention discloses a zero-current non-arcing switching type voltage-regulating and voltage-stabilizing device and a control method thereof. A secondary winding of a compensating transformer is connected in series between a power supply and a load; two end taps of the primary winding of the compensating transformer are connected to a zero line and a phase line of the power supply by a plurality of transfer switches respectively; and a first electronic switch is positioned between at least one end tap of the primary winding and the transfer switches by which the at least one end tap is connected to the zero line and / or the phase line of the power supply. The voltage-regulating and voltage-stabilizing switch of the invention is performed under the condition of zero current of the line where the transfer switches are positioned, so the non-arcing switch can be really realized; at the same time, compared with the prior art, the other two phases are not interfered during the isolated phase voltage-regulating and voltage-stabilizing switch; and the structure is simpler and convenient for reducing the manufacturing cost of the whole machine and the operation maintenance cost. The zero-current non-arcing switching type voltage-regulating and voltage-stabilizing device has the advantages of high regulating accuracy, fast strain, high efficiency and good voltage-stabilizing effect, can be applied to any single-phase or three-phase loads which need to regulate and stabilize the voltage, and is suitable for all the voltage grades in the conventional power network.

Description

technical field [0001] The invention relates to an AC voltage regulating and stabilizing method and an AC voltage regulating and stabilizing device, in particular to a zero-current arc-free switchable voltage regulating and stabilizing device and a voltage compensation method thereof. Background technique [0002] AC voltage stabilizing devices are widely used in industrial automation, complete sets of equipment, road energy-saving lighting, CNC machine tools, textiles, medical treatment, hotels, radio and television, communication equipment and other occasions that require stable AC power supply. [0003] Commonly used AC voltage stabilizers are more compensated, which uses the voltage generated by the compensation winding connected to the main circuit to superimpose the input voltage to obtain a stable output voltage. This type of voltage regulating and stabilizing circuit mostly provides two-way switching by compensating the switching of different winding coils of the pri...

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