CN202258707U

CN202258707U - Three-phase rectifier transformer

Info

Publication number: CN202258707U
Application number: CN2011203532577U
Authority: CN
Inventors: 彭正雄; 徐利东
Original assignee: JIANGSU JINFAN POWER TECHNOLOGY Co Ltd
Current assignee: JIANGSU JINFAN POWER TECHNOLOGY Co Ltd
Priority date: 2011-09-21
Filing date: 2011-09-21
Publication date: 2012-05-30
Anticipated expiration: 2021-09-21

Abstract

The utility model relates to a three-phase rectifier transformer. The three-phase rectifier transformer comprises a group of primary coils and two groups of secondary coils, which are sequentially wound on an iron core; one of the two groups of the secondary coils are in triangular connection, and the other group are in star-shaped connection; and the two groups of secondary coils are respectively about the heights of the upper part and the lower part of the whole transformer window. The three-phase rectifier transformer is suitable for the power supply formed by storage battery.

Description

Three-phase rectifier transformer

Technical field

The utility model relates to a kind of three-phase rectifier transformer.

Background technology

As shown in Figure 4; The structure that is used for the three-phase rectifier transformer of the power supply that storage battery changes at present comprises: be wound on a primary coil 2 and a secondary coil 3 on the iron core 1; Wherein primary coil 2 connects method or wye connection for triangular form; The window that structurally general primary coil 2 accounts for whole transformer is high, and the window that secondary coil 3 accounts for whole transformer too is high, because of primary coil 2 different with the number of turns of secondary coil 3; So generally wherein one group of coil is rare around solving through regular meeting, cause primary coil 2 and secondary coil 3 can not well be coupled, increase leakage inductance easily.On the other hand, the power supply that storage battery changes into itself has a large amount of harmonic components, can cause certain waste.

The utility model content

The utility model technical problem to be solved is: a kind of leakage inductance that reduces three-phase rectifier transformer is provided, reduces the three-phase rectifier transformer of harmonic current.

For addressing the above problem; The technical scheme that the utility model adopts is: three-phase rectifier transformer; Comprise one group of primary coil and two groups of secondary coils of being wound on successively on the iron core, in described two groups of secondary coils, wherein one group of coil is that triangular form connects method; Another group coil is a wye connection, and two groups of secondary coils respectively account for position of half height up and down in whole transformer window senior middle school.

Described primary coil is that triangular form connects method.

Described primary coil is a wye connection.

The beneficial effect of the utility model is: this structure through phase difference, can be offset and change into the higher harmonic current that power supply produces, thereby reduce the harmonic pollution to electrical network when transformer is worked.In addition, this structure since two secondary coils respectively to account for half the transformer window high, again since two secondary coils for working simultaneously; So when transformer is worked; The coupling of secondary coil and primary coil is better, has reduced the leakage inductance of three-phase rectifier transformer, improves transformer efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model three-phase rectifier transformer;

Fig. 2 is the schematic diagram of a kind of embodiment of the utility model three-phase rectifier transformer;

Fig. 3 is the schematic diagram of the another kind of embodiment of the utility model three-phase rectifier transformer;

Fig. 4 is the structural representation of the present employed three-phase rectifier transformer described in the background technology;

Among Fig. 1 to Fig. 3: 1, iron core, 2, primary coil, 3, first secondary coil, 4, the second subprime coil;

Among Fig. 4: 1, iron core, 2, primary coil, 3, secondary coil.

Embodiment

Through specific embodiment the utility model three-phase rectifier transformer is done further to describe in detail below.

Embodiment 1

Like Fig. 1, shown in Figure 2; Three-phase rectifier transformer; Comprise one group of primary coil 2 and two groups of secondary coils of being wound on successively on the iron core 1---first secondary coil 3 and second subprime coil 4, wherein primary coil 2 is for triangular form connects method, and first secondary coil 3 connects method for triangular form; Second subprime coil 4 is a wye connection, and first secondary coil 3 and second subprime coil 4 respectively account for position of half height up and down in whole transformer window senior middle school.

Embodiment 2

Like Fig. 1, shown in Figure 3; Three-phase rectifier transformer; Comprise one group of primary coil 2 and two groups of secondary coils of being wound on successively on the iron core---first secondary coil 3 and second subprime coil 4, wherein primary coil 2 is a wye connection, first secondary coil 3 connects method for triangular form; Second subprime coil 4 is a wye connection, and first secondary coil 3 and second subprime coil 4 respectively account for position of half height up and down in whole transformer window senior middle school.

The beneficial effect of the utility model is: this structure through phase difference, can be offset and change into the higher harmonic current that power supply produces, thereby reduce the harmonic pollution to electrical network when transformer is worked.In addition; This structure is because first secondary coil 3 respectively accounts for half the transformer window height with second subprime coil 4; Again since first secondary coil 3 and second subprime coil 4 for working simultaneously, so when transformer was worked, the coupling of secondary coil and primary coil 2 was better; Reduce the leakage inductance of three-phase rectifier transformer, improved transformer efficiency.

The above embodiments are the principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used to limit the utility model; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to the protection range of the utility model.

Claims

1. three-phase rectifier transformer; Comprise one group of primary coil and two groups of secondary coils of being wound on successively on the iron core; It is characterized in that: in described two groups of secondary coils; Wherein one group of coil is that triangular form connects method, and another group coil is a wye connection, and two groups of secondary coils respectively account for position of half height up and down in whole transformer window senior middle school.

2. three-phase rectifier transformer according to claim 1 is characterized in that: described primary coil is that triangular form connects method.

3. three-phase rectifier transformer according to claim 1 is characterized in that: described primary coil is a wye connection.