CN2800338Y - Network synthesis manostat - Google Patents

Abstract

The utility model relates to the technical field of manostats, particularly a network synthesis manostat which is provided with three double transformers and three single transformers, wherein each of the single transformers is provided with two coil windings and each of the double transformers is provided with four groups of coil windings. Identical linear electrical inductance is connected in series with transformer windings of a plurality of saturable iron cores between every two neighboring phases, and each phase is respectively independent. The input end of the network synthesis manostat is provided with a power-factor compensator in the delta connection. Storage capacitors are bridged every two secondary neighboring phases to output secondary and tertiary harmonic filtered waves. The utility model has the advantages of less power consumption, high efficiency, small size, light weight, material saving, low temperature rise and low noise.

Description

The network synthesis voltage stabilizer

Technical field:

The utility model relates to the voltage stabilizer technical field, refers in particular to a kind of network synthesis voltage stabilizer of digital wave voltage stabilizing.

Background technology:

At present, three-phase AC voltage stabilizer both domestic and external, no matter be three-in-one, or the magnetic saturation three-phase AC voltage stabilizer of three post cores, it is poor all to exist the three-phase alternating current quality of balance, require than higher to three-phase input quality of balance with to the output load quality of balance, relatively poor to the adaptability of imaginary loading, also exist power consumption big simultaneously, efficient is low, temperature rise, cost height, defectives such as Heavy Weight.In addition, this class voltage stabilizer oscillating capacitance has bigger harmonic current to flow through, thereby makes the withstand voltage and reliability of electric capacity obviously descend.

Summary of the invention:

The purpose of this utility model is to overcome the defective of prior art, and a kind of electromagnetic circuit efficient height is provided, and the three-phase equilibrium degree is good, reliability height, the network synthesis voltage stabilizer that noise is little.

Another purpose of the present utility model is to provide a kind of simple in structure, and volume is little, the network synthesis voltage stabilizer of low cost of manufacture.

For achieving the above object, the utility model has three dual transformers and three single phase transformers, on described single phase transformer, be provided with two coil winding, they are respectively coil winding Lsa1, Lsa2, coil winding Lsb1, Lsb2 and coil winding Lsc1, Lsc2, described dual transformer is provided with four groups of coil winding, they are respectively coil winding Lda1, Lda2, Lda3, Lda4, coil winding Ldb1, Ldb2, Ldb3, Ldb4, coil winding Ldc1, Ldc2, Ldc3, Ldc4, wherein single phase transformer coil winding Lsa1 and dual transformer coil winding Lda1, Ldb3, single phase transformer coil winding Lsb1 and dual transformer coil winding Ldb1, Ldc3, single phase transformer coil winding Lsc1 and dual transformer coil winding Ldc1, after being connected in series respectively, Lda3 meets at the O point, single phase transformer coil winding Lsa2 and dual transformer coil winding Lda2, Ldb4, single phase transformer coil winding Lsb2 and dual transformer coil winding Ldb2, Ldc4, single phase transformer coil winding Lsc2 and dual transformer coil winding Ldc2, meet at O ' point after Lda4 is connected in series respectively, inductance L 1 is arranged respectively at input end, L2, L3 and capacitor C _AB, C _BC, C _ACConstitute wave filter, capacitor C ac, Cab, Cbc and capacitor C _AB, C _BC, C _ACBe connected to output terminal c, a, 3 of b and input end C, A, B 3 points with delta connection respectively.

Also be connected to three-phase transformer for achieving the above object at output terminal c, a, 3 of b, every have two pickup coil windings on mutually, be respectively coil winding Lna1, Lna2, coil winding Lnb1, Lnb2 and coil winding Lnc1, Lnc2, coil winding Lna1 and coil winding Lnb2, coil winding Lnb1 and coil winding Lnc2, coil winding Lnc1 with meet at O after coil winding Lna2 connects respectively " point; inductance L 4 and capacitor C 4; inductance L 5 and capacitor C 5, inductance L 6 and capacitor C 6 are connected in series in twos and then are connected into central point at output terminal is that the star-like of N is connected.

Description of drawings:

Accompanying drawing 1 is circuit theory diagrams of the present utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is described further:

See shown in the accompanying drawing 1, the utility model includes three dual transformer DT1, DT2, DT3 and three single phase transformer ST1, ST2, ST3, on described single phase transformer, be provided with two coil winding, they are respectively coil winding Lsa1, Lsa2, coil winding Lsb1, Lsb2 and coil winding Lsc1, Lsc2, each dual transformer is provided with four groups of coil winding, they are respectively coil winding Lda1, Lda2, Lda3, Lda4, coil winding Ldb1, Ldb2, Ldb3, Ldb4, coil winding Ldc1, Ldc2, Ldc3, Ldc4.Wherein single phase transformer coil winding Lsa1 and dual transformer coil winding Lda1, Ldb3, single phase transformer coil winding Lsb1 and dual transformer coil winding Ldb1, Ldc3, single phase transformer coil winding Lsc1 with meet at the O point after dual transformer coil winding Ldc1, Lda3 are connected in series respectively; Single phase transformer coil winding Lsa2 and dual transformer coil winding Lda2, Ldb4, single phase transformer coil winding Lsb2 and dual transformer coil winding Ldb2, Ldc4, single phase transformer coil winding Lsc2 with meet at O ' point after dual transformer coil winding Ldc2, Lda4 are connected in series respectively.The iron core of single phase transformer and dual transformer can be E sections core or O sections core, all is arranged to saturable transformer.At input end inductance L 1, L2, L3 and capacitor C are arranged respectively _AB, C _BC, C _ACConstitute wave filter, capacitor C ac, Cab, Cbc and capacitor C _AB, C _BC, C _ACBe connected to output terminal c, a, 3 of b and input end C, A, B 3 points with delta connection respectively.Inductance L 1, L2, L3 all are arranged to nonsaturable reactor, and they and capacitor C ac, Cab, Cbc constitute three-phase input power factor compensator.

When input end A, B, 3 of C are connected electrical network, coil winding Lsa1, Lda1, Ldb3; Lsb1, Ldb1, Ldc3; Lsc1, Ldc1, Lda3 produce induced voltage respectively on the secondary pickup coil winding of its correspondence, they correspond to induced voltage Va1, Va2, Vb3 respectively; Vb1, Vb2, Vc3; Vc1, Vc2, Va3.The potential difference of secondary V12 ' of dual transformer and the secondary plotted point O ' of three-phase is among Fig. 1:

$V_{{12}^{\text{'}},O^{\text{'}}}=\sqrt{3}\mathrm{Va}2$

In like manner know

$V_{{12}^{\text{'}},{22}^{\text{'}}}=\sqrt{3}{V}_{{12}^{\text{'}},O^{\text{'}}}$

Output line voltage Vab, Vbc, Vca 3 of output terminal a, b, c can be represented by the formula:

Vab＝(Va1+Va2-Vb3)-(Vb1+Vb2-Vc3)

Vbc＝(Vb1+Vb2-Vc3)-(Vc1+Vc2-Va3)

Vca＝(Vc1+Vc2-Va3)-(Va1+Va2-Vb3)

So the synthetic pulse that can get, through capacitor C ac, Cab, Cbc two, third harmonic filtering, exportable pure sine wave.

For making output terminal can access 220 volts phase voltage, at described output terminal a, b, 3 of c are connected to three-phase transformer, three-phase transformer is three post core transformers, every have two pickup coil windings on mutually, be respectively coil winding Lna1, Lna2, coil winding Lnb1, Lnb2 and coil winding Lnc1, Lnc2, coil winding Lna1 and coil winding Lnb2, coil winding Lnb1 and coil winding Lnc2, coil winding Lnc1 with meet at O after coil winding Lna2 connects respectively " point; inductance L 4 and capacitor C 4, inductance L 5 and capacitor C 5, inductance L 6 and capacitor C 6 are connected in series in twos and then are connected into central point at output terminal is that the star-like of N is connected.The N point is a neutral point, and the voltage between output terminal a, b, 3 of c and the N point is phase voltage, and inductance L 4, L5, L6 and capacitor C 4, C5, C6 constitute the even-order harmonic wave filter.

Single phase transformer of the utility model and dual transformer have adopted is arranged to saturable transformer, and whenever alternate have identical linear inductance to be connected in series mutually with the Transformer Winding of several saturable cores, and each is independent separately mutually.During work, each transformer enters magnetic saturation in turn, so iron core can design smallerly, output terminal has delta-connected power-factor compensator, the special connection of the adaptable network of load reactance is adopted in output, and it is per two alternate that storage capacitor is connected across, and output has two, third harmonic filtering, available transformer is introduced neutral point and is obtained line, the three-phase four-wire system of two groups of voltages mutually, utilizes that peak power is saturated to carry out work.It is little to have power consumption, the efficient height, and volume is little, and is in light weight, the material saving, temperature rise is low, the advantage that noise is little.

The utility model is by structural component design and sequential control to three dual transformer DT1, DT2, DT3 and three single phase transformer ST1, ST2, ST3, realize the homophase addition, out-phase is arranged chronologically, dispose Design of Filter and input power factor design of Compensator, adopt that peak power is saturated to carry out work, reach following technical indicator thus:

The permission input voltage range 260～500V of extra wide

The precision of voltage regulation≤1.5%

Load effect≤2%

Efficient 〉=90% (7.5KVA)

Three-phase equilibrium degree≤1%

Distortion≤3.5 (empty quota is decided scope)

Noise≤50dB (7.5KVA)

Reaction time≤20～40ms

Instantaneous overload 〉=200% nominal load (20min).

Claims (2)

1, the network synthesis voltage stabilizer, it is characterized in that: include three dual transformer DT1, DT2, DT3 and three single phase transformer ST1, ST2, ST3, on described single phase transformer, be provided with two coil winding, they are respectively coil winding Lsa1, Lsa2, coil winding Lsb1, Lsb2 and coil winding Lsc1, Lsc2, described dual transformer is provided with four groups of coil winding, they are respectively coil winding Lda1, Lda2, Lda3, Lda4, coil winding Ldb1, Ldb2, Ldb3, Ldb4, coil winding Ldc1, Ldc2, Ldc3, Ldc4, wherein single phase transformer coil winding Lsa1 and dual transformer coil winding Lda1, Ldb3, single phase transformer coil winding Lsb1 and dual transformer coil winding Ldb1, Ldc3, single phase transformer coil winding Lsc1 and dual transformer coil winding Ldc1, after being connected in series respectively, Lda3 meets at the O point, single phase transformer coil winding Lsa2 and dual transformer coil winding Lda2, Ldb4, single phase transformer coil winding Lsb2 and dual transformer coil winding Ldb2, Ldc4, single phase transformer coil winding Lsc2 and dual transformer coil winding Ldc2, meet at O ' point after Lda4 is connected in series respectively, inductance L 1 is arranged respectively at input end, L2, L3 and capacitor C _AB, C _BC, C _ACConstitute wave filter, capacitor C ac, Cab, Cbc and capacitor C _AB, C _BC, C _ACBe connected to output terminal c, a, 3 of b and input end C, A, B 3 points with delta connection respectively.

2, network synthesis voltage stabilizer according to claim 1, it is characterized in that: described output terminal c, a, 3 of b are connected to three-phase transformer, every have two pickup coil windings on mutually, be respectively coil winding Lna1, Lna2, coil winding Lnb1, Lnb2 and coil winding Lnc1, Lnc2, coil winding Lna1 and coil winding Lnb2, coil winding Lnb1 and coil winding Lnc2, coil winding Lnc1 with meet at O after coil winding Lna2 connects respectively " point; inductance L 4 and capacitor C 4; inductance L 5 and capacitor C 5, inductance L 6 and capacitor C 6 are connected in series in twos and then are connected into central point at output terminal is that the star-like of N is connected.