CN2872562Y

CN2872562Y - Efficient transformer

Info

Publication number: CN2872562Y
Application number: CN 200520142621
Authority: CN
Inventors: 常俊军
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-06
Filing date: 2005-12-06
Publication date: 2007-02-21
Anticipated expiration: 2015-12-06

Abstract

An AC transformer with high energy efficiency comprises a transformer core, a bobbin winder bracket covering on the transformer core, and a primary coil and a secondary coil winding on the bobbin winder bracket, wherein the primary coil and/or secondary coil are two winding groups; a capacitance is connected to both ends of the first winding in parallel to form a resonance circuit, a first end of the second winding is connected to the center tap terminal of the first winding, and a second end of the second winding, together with one terminal of the first winding that is not in the same terminal direction with the second end of the second winding, forms the input terminal and/or output terminal of the transformer. The utility model adopts two-winding structure in the primary coil and/or secondary coil of the transformer, and a resonance circuit is formed by firstly connecting both ends of the first winding in parallel and then connecting to the second winding in series, so as to meet the output requirement of high energy efficiency.

Description

The high energy efficiency AC transformer

Technical field

The utility model relates to a kind of high voltage transformer unit.

Background technology

Traditional high-tension transformer comprises iron core and coil windings.No matter which kind of structure iron core traditional high-tension transformer adopts, and how primary coil and secondary coil form close coupling is closed, and to reduce the electric leakage sensibility reciprocal, all can not improve the conversion efficiency of transformer effectively.The factor that influences the transformer conversion efficiency also comprises iron loss in its internal loss, copper loss etc.

Summary of the invention

The purpose of this utility model provides a kind of high energy efficiency AC transformer, to solve traditional low problem of transformer conversion efficiency.

High energy efficiency AC transformer described in the utility model comprises transformer core, be enclosed within drum stand on the transformer core, the primary coil and the secondary coil of coiling on the drum stand; Described primary coil is or/and secondary coil is two windings, at the two ends of first winding and connect an electric capacity and constitute a resonant tank, the centre tap end of one termination, first winding of second winding is formed the input of transformer or/and output jointly by the other end of second winding and the non-same polarity of first winding.

High energy efficiency AC transformer as mentioned above, at primary coil or/and first in the secondary coil around with resonant tank that electric capacity constitutes in be connected in series a controllable impedance.

High energy efficiency AC transformer as mentioned above, at primary coil or/and in the resonant tank that first winding in the secondary coil and electric capacity constitute, electric capacity is made of by switch is parallel with one another respectively a plurality of shunt capacitances.

The utility model or/and in the secondary coil, adopt two winding constructions, at the two ends of first winding and after connecing electric capacity, is connected in series second winding coil at the primary coil of transformer again, to form a resonant tank, therefore, can satisfy the requirement of high energy efficiency output.

Description of drawings

Fig. 1 is first circuit embodiments schematic diagram of the present utility model.

Fig. 2 is second embodiment circuit theory diagrams of the present utility model.

Fig. 3 is the 3rd embodiment circuit theory diagrams of the present utility model.

Embodiment

Scheme of the present utility model is on common transformer device structure basis primary and secondary coil circuit to be transformed formation, and its physical circuit principle can be referring to Fig. 1 to shown in Figure 3.Common transformer comprises transformer core, drum stand and primary coil and secondary coil.First technical scheme of the present utility model is seen Fig. 1, and it comprises primary coil L1 and two secondary coil L2, L3.The two ends of first secondary coil L2 are connected in parallel to a capacitor C 1, form a resonant tank jointly, first secondary coil of termination L2 centre tap end of second secondary coil L3 is arranged, the other end is the output of transformer.Another output of transformer be the first secondary coil L2 an end (with the above-mentioned output of second time coil be non-same polarity).

Fig. 2 is second improved technical scheme of the present utility model, it is compared with technical scheme shown in Figure 1, be that the primary coil among Fig. 2 is divided into two coil L4, L5, and coil L4 and capacitor C 2 be connected into the form in secondary resonance loop as shown in Figure 1, and secondary coil is a coil windings L6.

Fig. 3 is the 3rd technical scheme of the present utility model, and it is that primary coil L7, L8, secondary coil L9, L10 all are connected into version as the resonant tank of Fig. 1 secondary coil winding.Among Fig. 3 and to connect electric capacity be C3, C4.

Further execution mode of the present utility model is, in the circuit structure as Fig. 1 to Fig. 3, be connected in series a variable inductor of using for the adjustment resonant parameter in first coil and LC resonant tank that electric capacity is formed.Another further execution mode of the present utility model is, in the LC resonant tank, adopts a plurality of shunt capacitances and first coil to connect into the LC resonant tank, and each capacitive branch in parallel is connected in series control switch respectively, inserts the quantity of shunt capacitance with control.

Claims

1, a kind of high energy efficiency AC transformer, it comprises transformer core, be enclosed within drum stand on the transformer core, the primary coil and the secondary coil of coiling on the drum stand; It is characterized in that: described primary coil is or/and secondary coil is two windings, at the two ends of first winding and connect an electric capacity and constitute a resonant tank, the centre tap end of one termination, first winding of second winding is formed the input of transformer or/and output jointly by the other end of second winding and the non-same polarity of first winding.

2, high energy efficiency AC transformer according to claim 1 is characterized in that: at primary coil or/and first in the secondary coil around with resonant tank that electric capacity constitutes in be connected in series a controllable impedance.

3, high energy efficiency AC transformer according to claim 1 is characterized in that: at primary coil or/and in the resonant tank that first winding in the secondary coil and electric capacity constitute, electric capacity is made of by switch is parallel with one another respectively a plurality of shunt capacitances.