A Low-Voltage Hybrid Winding Structure Used in On-load Capacitance Transformer
A winding structure, transformer technology, applied in transformers, variable transformers, transformers/inductor coils/windings/connections, etc., can solve the problems of increasing transformer load loss, generating circulating current, etc.
Active Publication Date: 2017-05-31
GUANGDONG GUANGTE ELECTRIC
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Problems solved by technology
If the three parts are superimposed and wound in turn, a circulating current will be generated when they are connected in parallel, which will increase the load loss of the transformer.
Method used
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Embodiment Construction
[0013] The present invention will be further described below in conjunction with specific embodiment:
[0014] See attached Figures 1 to 3 As shown, a low-voltage hybrid winding structure used in an on-load capacity regulating transformer described in this embodiment includes a first coil 1 made of copper foil, a pair of helical coils made of paper-wrapped copper flat wire The second coil 2 and the third coil 3 of the staggered structure, the end insulation 6 placed on the upper and lower ends of the first coil 1 and the second coil 2, and the third coil 3 respectively, the layer insulation 5 arranged on the first coil 1 and Outlet copper bars 8 are respectively arranged at the upper and lower ends of the first coil 1, wherein the first coil is on the inner side, and the second coil and the third coil are interlaced (one up and one down) wound on the outside.
[0015] Specifically, when making the first coil 1, copper foil is first wound on the forming insulating cylinder 9,...
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The invention discloses a low-voltage mixed winding structure for a regulated capacity transformer. The lower-voltage mixed winding structure is reasonable in structure and capable of effectively reducing the load loss of the transformer. The lower-voltage mixed winding structure comprises a first coil which is composed of copper foil, a pair of second and third coils which are composed of paper-covered copper flat wires and are each of a spiral staggered structure, end insulation arranged at the upper ends and the lower ends of the first coil and the second coil and the third coil, layer insulation arranged on the first coil, and outlet copper bars arranged at the upper end and the lower end of the first coil respectively, wherein the first coil is on the inner side, and the second coil and the third coil are wound on the outer side in a staggered mode. According to the technical scheme, the mixed winding structure is formed by the first coil which is composed of the copper foil and the second coil and the second coil which are composed of the paper-cover copper flat wires and are each of the spiral staggered structure, when size conversion of the capacity is conducted on the transformer, the conversion efficiency is high, the conversion effect is stable, and the power loss of the transformer can be effectively reduced.
Description
technical field [0001] The invention relates to the technical field of power distribution transformers, in particular to a low-voltage hybrid winding structure used in on-load capacity regulating transformers. Background technique [0002] Generally, the conversion of the size and capacity of the variable voltage and capacity regulating transformer is based on the size of the load. The high-voltage side is changed by D / Y conversion, and the low-voltage side is realized by changing the series-parallel relationship of the winding. When the triangular capacity is large, high-voltage D connection, low-voltage series / parallel combination, when small capacity, high-voltage Y connection, low-voltage series connection. The low voltage must be divided into three parts in order to achieve the above functions. If the three parts are superimposed and wound in turn, a circulating current will be generated when they are connected in parallel, which will increase the load loss of the tran...
Claims
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IPC IPC(8): H01F27/30H01F29/04
Inventor 于冀江龙世熠
Owner GUANGDONG GUANGTE ELECTRIC