CN2149653Y

CN2149653Y - Automatic compensation type ac regulated power supply

Info

Publication number: CN2149653Y
Application number: CN 93236130
Authority: CN
Inventors: 梁大志; 汪立森; 潘天麟
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-15
Filing date: 1993-01-15
Publication date: 1993-12-15
Anticipated expiration: 2003-01-15

Abstract

The utility model relates to an automatic compensation type AC regulated power supply. A compensating transformer T, a voltage regulator Reg and an invertible synchronous motor M are directly coupled and are coaxially installed. The positions of a sliding arm contact 5 and a fixing point 4 of the voltage regulator Reg can decide the size and the phase of the compensating voltage. The automatic compensation type AC regulated power supply can compensate the input voltage in good time to stabilize the output voltage in a prescribed range, so the automatic compensation type AC regulated power supply can obtain the high power output with the minor compensating power.

Description

Automatic compensation type ac regulated power supply

The utility model relates to a kind of alternating current steady voltage plug.

The alternating current steady voltage plug kind is more, and traditional have E-communication formula, induction type and a magnetic saturation type stabilized voltage supply.These stabilized voltage supplys are because capacity is little, loss is big, and waveform distortion is serious, and to the bad adaptability of load, thereby be difficult to satisfy modern production and scientific research requirements.The domestic and international in recent years DJW type high-power electric voltage stabilizer of producing, its commutation mode adopt the two brush group balancing machine link gears of both arms, have advantages such as output power is big, efficient is high, waveform is undistorted, load characteristic is good.But its volume is big, processed complex, and mounting process requires high, and pressure regulation rolling contact and coil surface of contact are little, and sparking is ablated easily.

Task of the present utility model is that a kind of output power is big, efficient is high, waveform is undistorted, load characteristic is good, volume is little, the simple alternating current steady voltage plug of manufacturing process thereby provide by the structure of change compensator transformer and voltage regulator.

The utility model is to realize like this, a kind of automatic compensation type alternating current steady voltage plug, form by compensator transformer T, voltage regulator Reg, steering logic KL and reversible synchronous motor M, secondary being connected with capacitor C by a fixed taps 1 that it is characterized in that compensator transformer T formed a low pass type power-supply filter, voltage regulator Reg is that single cursor slide contact 5 is regulated, and fixed taps 4 is connected with elementary 3 of compensator transformer.

The high voltagehigh frequency low loss capacitance C that connects compensator transformer T secondary fixed tap 1, bypass to purify the output voltage of alternating current steady voltage plug, intercepts the noise jamming from load, in case the load clutter is to the pollution of electrical network from the noise jamming of electrical network.

The fixed taps 1 of T level of compensator transformer and the fixed taps 4 of voltage regulator Reg are center tap.

Compensator transformer T, voltage regulator Reg and reversible synchronous motor M adopt straight coupling to connect.

The cursor slide contact 5 of voltage regulator Reg is connected with 2 of compensator transformer T, and the size of bucking voltage and phase place are by cursor slide contact 5 and the decision of the relative position between the fixed taps 4 of voltage regulator Reg on the compensator transformer.

When input voltage or load variations cause that output voltage changes, steering logic KL compares with reference voltage higher limit or lower limit behind rectifying and wave-filtering from the output terminal sampling, sampled value is during greater than higher limit, the actuating of relay of the steering logic KL upper limit, make reversible synchronous motor M rotation, at this moment driving voltage regulator list cursor slide brush contact 5 produces a voltage to 4 motions on compensator transformer is elementary

R, the secondary bucking voltage-△ that then produces T, it descends output voltage, and in the allowed band that is returned to the precision of voltage regulation, simultaneously, upper limit relay discharges, and reversible synchronous motor M stops operating.Otherwise, the lower limit actuating of relay, reversible synchronous motor M opposite spin, single cursor slide brush contact 5 is from 4 motions,

R changes phase place, and output voltage is risen, and in being returned to the scope that the precision of voltage regulation allows, thereby reaches the purpose of output voltage stabilization.

The utility model compared with prior art, output power is big, efficient is high, waveform is undistorted except keeping, load characteristic well, because the change of compensator transformer T and voltage regulator Reg and reversible synchronous motor M structure, make that whole stabilized voltage supply volume reduces, weight saving, and the compensation power of their required maximums that provides is 1/5th of a Maximum Power Output.Voltage regulator Reg cursor slide contact employing slider and coil surface of contact are big, are difficult for sparking and ablate.

Accompanying drawing is the utility model electrical schematic diagram.

1 is the fixed taps of T level of compensator transformer among the figure, and 2 and 3 is two elementary wiring points of compensator transformer T, and 4 is the fixed taps of voltage regulator, and 5 is voltage regulator cursor slide contact.

Further illustrate the utility model by embodiment below.

Accompanying drawing is the automatic compensation type ac regulated power supply principle figure of output power 22KVA.When input voltage is 220V ± 20%, makes its output voltage stabilization at 220V ± 1%, and require it can intercept output and input noise jamming each other effectively.Be respectively 4.4KVA according to the real power of calculating compensator transformer T and voltage regulator Reg.Compensator transformer T selects for use O shape iron core to select for use the iron core of E shape, C shape or other type to have little in light weight, the advantages such as leakage field is few, hum free of volume.The real power size of compensator transformer T is directly proportional with the variation range of the input voltage that needs compensation, and promptly the variation range of input voltage is wide more, and then the real power of compensator transformer is big more, this routine Usr=220V ± 20%.Compensator transformer T and voltage regulator Reg all adopt O shape iron core in this example, and power is identical, are convenient to coaxial installation, compact conformation, and volume is little.Filter capacitor C and compensator transformer T form low pass type power-supply filter, it presents a series connection resonance low impedance path to intercept output and the mutual noise jamming of input to high-frequency clutter, filter capacitor C should have above frequency of the withstand voltage and 1MHZ of Q times of supply voltage and little self-inductance, and this example is selected high-voltage ceramic capacitor for use.Voltage regulator Reg tap 4 is a bucking voltage

The reference data of R, the distance and the position of cursor slide contact 5 relative 4 have determined the size and the phase place of bucking voltage.When the center of tap 4, be ± 20% in this example to the compensation range of input voltage at voltage regulator Reg.When tap 4 near the B points, and when accounting for 1/4th numbers of turn of whole winding, then the compensation range to input voltage is+10 ,-30%; Otherwise when tap 4 near the A points, and when accounting for 1/4th numbers of turn of whole winding, then the compensation range to input voltage is+30 ,-10%.

Claims

1, a kind of automatic compensation type alternating current steady voltage plug, form by compensator transformer T, voltage regulator Reg, steering logic KL and reversible synchronous motor M, secondary being connected with capacitor C by a tap 1 that it is characterized in that compensator transformer T formed a low pass type power-supply filter, and voltage regulator Reg has a fixed taps 4 to be connected with elementary 3 of compensator transformer T.

2,, it is characterized in that capacitor C is the high voltagehigh frequency low loss capacitance according to the automatic compensation type alternating current steady voltage plug of claim 1.

3,, it is characterized in that the tap 1 of T level of compensator transformer is center tap according to the automatic compensation type alternating current steady voltage plug of claim 1.

4,, it is characterized in that the fixed taps 4 of voltage regulator Reg is center tap according to the automatic compensation type alternating current steady voltage plug of claim 1.

5,, it is characterized in that the straight coupling of compensator transformer T, voltage regulator Reg and reversible synchronous motor M connects according to the automatic compensation type alternating current steady voltage plug of claim 1.

6, according to the automatic compensation type alternating current steady voltage plug of claim 1 or 4, the cursor slide contact 5 that it is characterized in that voltage regulator Reg is connected with 2 of compensator transformer T, and the size of bucking voltage and phase place are by cursor slide contact 5 and the decision of the relative position between the fixed taps of voltage regulator Reg on the compensator transformer.