CN2185467Y

CN2185467Y - Small energy-saving transformer

Info

Publication number: CN2185467Y
Application number: CN 94200070
Authority: CN
Inventors: 孙丰华
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-06
Filing date: 1994-01-06
Publication date: 1994-12-14
Anticipated expiration: 2004-01-06

Abstract

The utility model relates to a small energy-saving transformer, belonging to a power supply converter. The small energy-saving transformer is used for changing the voltage of an A.C. power supply and providing adaptive voltage for loads. The small energy-saving transformer is characterized in that a small iron core wound with a plurality of sets of different coil curls is connected with a miniature capacitor, and a power supply input circuit is composed of three sets of different coil curls connected in series; the capacitor is connected in parallel in the input circuit; the power supply is connected via a tap mode; the input circuit and an output circuit are connected with the capacitor in series; one or more than one coil curl can be arranged in the output circuit. The small energy-saving transformer has the advantages that reactive power loss is reduced, power factor approaches to 1, volume and weight are decreased obviously, steel and copper materials are saved simultaneously, and manufacturing cost is reduced.

Description

Small energy-saving transformer

The utility model belongs to electric power conversion apparatus, is used for the voltage transformation of AC power, for load provides adapt voltages.

Existing induction type transformer efficiency factor is low, and exciting curent is big, the reactive loss height, and heating is serious, also has the volume heaviness simultaneously, consumes steel, the copper material amount is big, problems such as manufacturing cost height.Especially under many situations about concentrate using, can cause system effectiveness seriously to reduce, adverse consequences such as operating cost is higher.

The purpose of this utility model is to solve above-mentioned drawback, and a kind of high-performance, miniaturization, low cost are provided, and can replace the energy saving transformer of common electrical sense transformer within the specific limits.

Of the present utility model being characterised in that is wound with several groups of different coils on the small-sized iron core, and is connected with midget capacitor.Its power supply input circuit is made of three groups of different coil series connection.Be parallel with capacitor in this input circuit, constitute the composition complementary network, input voltage and input current are clamped on the level of minimum phase angle difference.The induction field that produces on this loop is coupled to the output loop coil by iron core, obtains output voltage at the OUT end.Power supply inserts in the tap mode, so that obtain multiple different output voltage.Input, string has capacitor on the output loop, can change input, output characteristic, so that with load the matching capacity of broad is arranged.The output loop coil can be one or more.

The utility model has the advantages that, significantly reduced reactive loss, make power factor near 1.Volume and weight all obviously reduces, and has also saved steel and copper material simultaneously.Manufacturing cost also has certain decline.

Fig. 1 is a circuit diagram of the present utility model.

Fig. 2 is shell figure of the present utility model.

Provide embodiment of the present utility model below:

As shown in Figure 1, the INP end is the input of AC power.Input circuit is connected mutually by

coil

1,2,3 and is constituted.Midget capacitor 4 is connected in parallel on the two ends of this series connection winding.Small-sized iron core 5 available silicon steel discs or amorphous alloy material are made.Its version is decided by different purposes, as stacked, takeup type, compacting formula etc.Output loop coil 7 is connected with load through the OUT end, and it can be one group, also can be many groups, different taps can also be set, so that obtain multiple different output

voltage.Series capacitors

8,9 is needed to decide by unequally loaded on input, output loop.

In order to obtain constant-current characteristics preferably, can between input circuit and output loop, increase leakage flux iron core 6.

Fig. 2 is a shell of the present utility model, can be by metal material or plastic material manufacturing.On perisporium, be provided with several convex-concave slotted eyes, be used for ventilation and heat.When power hour, also can pour into into totally enclosed type with insulating material.

Claims

1, a kind of miniature energy-saving transformer, comprise the magnetic circuit formed by iron core 5,6 and input, output, it is characterized in that being wound with several groups of different coils on the small-sized iron core 5, and be connected with midget capacitor, its power supply input circuit is made of 1,2,3 series connection of three groups of different coils, is parallel with capacitor 4 in this input circuit, and power supply inserts in the tap mode, string has capacitor 8,9 on input, the output loop, and output loop coil 7 can be one or more.

2,, it is characterized in that output loop coil 7 can be provided with different taps according to claim 1 said energy-economic transformer.

3, according to claim 1 said energy-economic transformer, it is characterized in that small-sized iron core 5 can be made by silicon steel sheet or amorphous material, can also between input circuit coil and output loop coil, leakage flux iron core 6 be set.

4,, it is characterized in that case peripheral wall is provided with several convex-concave slotted eyes, also can pour into insulating material in the enclosure according to claim 1 said energy-economic transformer.