CN202395664U

CN202395664U - Frequency-tripling power supply generating device

Info

Publication number: CN202395664U
Application number: CN2011205055784U
Authority: CN
Inventors: 罗庆林; 龚志湘
Original assignee: XIANGTAN ELECTRIC EQUIPMENT MANUFACTURE CO Ltd
Current assignee: XIANGTAN ELECTRIC EQUIPMENT MANUFACTURE CO Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-08-22
Anticipated expiration: 2021-12-08

Abstract

The utility model discloses a frequency-tripling power supply generating device, comprising three single-phase dry-type transformers having the same model, a housing, internal connecting cables, a group of input terminal heads, and a group of output terminal heads; wherein, the three single-phase dry-type transformers are arranged in parallel in the housing; primary sides of the three single-phase dry-type transformers having the same model are connected into a star shape through the connecting cables, and an alternating current power supply is input through the three input terminal heads arranged on the housing; secondary sides of the three single-phase dry-type transformers having the same model are connected into a triangular shape through the connecting cables, one connecting point therein is broken, two ends output the power supply through the output terminal heads; and the input terminal heads and the output terminal heads are arranged on the housing. The frequency-tripling power supply generating device of the utility model has the advantages of simple structure, low manufacturing cost, reliable performance, and capacity for changing a 50Hz three-phase alternating current power supply into a 150 Hz single-phase alternating current power supply to output.

Description

A kind of frequency tripling power generator

Technical field

The utility model relates to a kind of power generator, particularly a kind of frequency tripling power generator.

Background technology

At present, any power transformer product all must carry out delivery test before dispatching from the factory, and to guarantee the outgoing of product, it is exactly induced over voltage withstand test that the test of a particular importance is arranged in the product export routine test of transformer the countries concerned prescribed by standard.So-called induced over voltage withstand test is exactly the rated voltage that applies twice to transformer coil, and transformer is carried out excitation, longitudinal insulation quality such as, turn-to-turn alternate with the examination transformer and interlayer.In order to prevent in induction is withstand voltage because of applying the supersaturation unshakable in one's determination that rated voltage that voltage is higher than winding causes and the distortion of induction voltage waveform, the power supply of 100～200Hz is adopted in the necessary corresponding raising of the frequency of experiment power supply usually.And the ac power frequency that we use always is 50Hz, in order to obtain the output of high-frequency power, just must have one can the electric device of common power frequency rising be used to produce the transformer induction pressure test power source special.

Summary of the invention

In order to solve the problems of the technologies described above, the utility model provide a kind of simple in structure, cost of manufacture is low, dependable performance, can the power source transition of three-phase alternating current 50Hz be become the frequency tripling power generator of the power supply output of single phase alternating current (A.C.) 150Hz.

The technical scheme that the utility model solves above-mentioned technical problem is: comprise single-phase dry-type transformer, shell, interconnection cable, one group of input wires termination and one group of output connection termination that three models are consistent; Described three single-phase dry-type transformers are installed in the enclosure side by side; The former limit of the single-phase dry-type transformer that three models are consistent connects into star with stube cable; Through being installed in three input wires termination input ac powers on the shell; The secondary of the single-phase dry-type transformer that three models are consistent connects into triangle with stube cable; Wherein place's tie point breaks off, and through output connection termination out-put supply, described input wires termination and output connection termination are installed on the shell with two ends.

Owing to adopt technique scheme; The beneficial effect of the utility model is: this utility model frequency tripling power generator can become the power source transition of three-phase alternating current 50Hz the power supply output of single phase alternating current (A.C.) 150Hz; Have make simple, cost is lower, dependable performance, and muting characteristics during operation; And out-put supply frequency stabilization, antijamming capability are strong, help improving the accuracy of transformer induction pressure test.

Description of drawings

Fig. 1 is the main cutaway view of the utility model frequency tripling power generator;

Fig. 2 is the electrical schematic diagram of the utility model frequency tripling power generator;

Fig. 3 is the utility model frequency tripling power generator supply frequency conversion oscillogram.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation:

As shown in Figure 1; A kind of frequency tripling power generator; Comprise the consistent single-phase dry-type transformer of three models 1, shell 4, interconnection cable 3, one group of input wires termination 2 and one group of output connection termination 5; Described three single-phase dry-type transformers 1 are installed in the shell 4 side by side, and the former limit of the single-phase dry-type transformer 1 that three models are consistent connects into star with stube cable 3, through being installed in three input wires termination 2 input ac powers on the shell 4; The secondary of the single-phase dry-type transformer 1 that three models are consistent connects into triangle with stube cable 3; Wherein place's tie point breaks off, and through output connection termination 5 out-put supplies, described input wires termination 2 is installed on the shell 4 with output connection termination 5 with two ends.

As shown in Figure 2; For being the utility model frequency tripling power generator electrical schematic diagram; T1, T2 and T3 are three single-phase dry-type transformers that model is consistent, with three interconnection cables the former limit of three dry-type transformers are connected into star connection, and the afterbody termination X, Y, the Z that are about to former limit winding H1, H2 and the H3 of three transformers couple together; Again stem end A, B, C are received on the input wires termination on the shell with stube cable respectively, represent with symbol U, V and W; With interconnection cable the secondary of three dry-type transformers is connected into open-delta connection then; The afterbody termination x that is about to transformer T1 secondary winding h1 links to each other with the stem termination b of transformer T2 secondary winding h2, the afterbody termination y of transformer T2 secondary winding h2 links to each other with the stem termination c of transformer T3 secondary winding h3; At last the stem termination a of transformer T1 secondary winding h1 and the afterbody termination z of transformer T3 secondary winding h3 are received on the output connection termination on the shell with stube cable respectively, represent with symbol m and n.

As shown in Figure 3; Be the utility model frequency tripling power generator supply frequency conversion oscillogram, when on the input wires termination, inserting three-phase alternating current 50Hz power supply U, V, W, the supply frequency oscillogram of its every phase is as shown in Figure 3; After the processing of frequency tripling power generator; What on the output connection termination, export is the power supply of single phase alternating current (A.C.) 150Hz, and its frequency is the equal of with the stack of the frequency of three phase mains, conversion process that can very clear understanding supply frequency from Fig. 3.When transformer induction pressure test, give the power supply of frequency tripling power generator with three-phase regulator, according to by the rated voltage size of examination transformer coil, can provide to double the rated voltage size accordingly, be three times in the experiment power supply of supply frequency.

Claims

1. frequency tripling power generator; It is characterized in that: comprise single-phase dry-type transformer, shell, interconnection cable, one group of input wires termination and one group of output connection termination that three models are consistent; Described three single-phase dry-type transformers are installed in the enclosure side by side; The former limit of the single-phase dry-type transformer that three models are consistent connects into star with stube cable; Through being installed in three input wires termination input ac powers on the shell, the secondary of the single-phase dry-type transformer that three models are consistent connects into triangle with stube cable, and wherein place's tie point breaks off; Through output connection termination out-put supply, described input wires termination and output connection termination are installed on the shell with two ends.