A. c. electricity control device

A technology of AC voltage and control devices, which is applied in the direction of control/regulation systems, adjustment of electrical variables, conversion equipment that can be converted to DC without intermediate conversion, etc., and can solve problems such as difficult maintenance of supply voltage
CN1797258AInactive Publication Date: 2006-07-05NTT DATA EX TECH CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NTT DATA EX TECH CORP
Publication Date
2006-07-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention uses simple method to realize the controlling of the output electric tension in the control device of the alternating current voltage when the capacity of the equipment is not increased. Connect in parallel the single-phase two-wire system input terminals R1, S1 to one end and the other end of the autotransformer TR1 with center tapping, connect the input end S1 with output end S2 with pin cord c1, it includes a primary winding P whose one end is connected to one end of the autotransformer TR1, a transformer TR2 which do magnetic coupling to the primary winding P and is connected to the secondary winding S between the input end R1 and the output end R2; and a switch which switches the connecting objects of the other end of the primary winding P with any end in one end of the autotransformer, the tap, or the other end.
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Description

technical field

[0001] The present invention relates to an AC voltage control device, in particular to an AC power supply of a single-phase two-wire system, a three-phase three-wire system or a three-phase four-wire system, which can be realized with a simple structure to obtain an AC power supply whose voltage drops or rises in stages. An AC voltage control device for voltage conversion for power supplies. Background technique

[0002] The AC voltage supplied to the load from a commercial power supply varies in each power supply method or in each country, for example, there are single-phase two-wire system 100 / 200V, single-phase two-wire system 220V, single-phase three-wire system 100 / 200V system, 200V three-phase three-wire system, 100 / 200V three-phase four-wire system, 220 / 380V three-phase four-wire system, etc. Furthermore, it is assumed that the supply voltage is not always constant but can be varied, and the permissible range of this variation is regulated by relevant...

Claims

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