CN2251836Y - Electronic voltage stabilizer for premanent-magnet generator - Google Patents

Abstract

The utility model relates to an electronic voltage stabilizer for permanent magnetic generators, comprising a casing (1) which is cast and pressed by aluminium alloy and has cooling fins. The utility model is characterized in that an electronic circuit board is arranged in the hollow cavity of the casing (1); the electronic circuit board is provided with a main switch loop, a load current sensing loop, and a full wave voltage sampling control loop. The utility model has the advantages of small volume, firm structure, low cost, better voltage stabilizing effect, stable lighting, and safety. The utility model can satisfy the request of transport vehicles for agricultural use when the utility model is added on a generator. The utility model can be easily produced in large scale and in mechanization.

Description

The permanent magnet generator electronic voltage regulator

The utility model relates to a kind of pressurizer, the electronic voltage regulator of using more specifically to a kind of permanent magnet generator.

Applicant No.3 Motor Plant, Qingdao City has announced a kind of " used with tractor magneto alternator " in No. 92211791.8 patents.This product is because of its advanced technology, has that volume is little, power output is big.By adorning easy advantage, used as full car power supply as agricultural tricycle by some high speed agricultural transportation vehicles.In this case, some shortcomings also appear in this product, and for example the light of agricultural transportation vehicle is provided with completely, and the electrical equipment setting is than the tractor complexity, and the electricity consumption load variations is big.For making car lighting stable, electrical installation is reliable, just requires the voltage of generator output stable, and particularly when little load of high speed and low speed full load, voltage should remain between 11～15V.Above-mentioned generator does not reach such requirement, must add in addition that pressurizer could satisfy the requirement of agricultural transportation vehicle.Though existing pressurizer can play certain pressure stabilization function, also there are some shortcomings, can't satisfy the requirement of agricultural transportation vehicle fully.For example, when the vehicle high-speed cruising uses low power turn signal lamp, often burn out bulb.Reason is that its instantaneous stabilized voltage characteristic is bad, causes when direction indicator lamp glimmers producing voltage overshoot and burns out bulb.When " the zero current lockout circuit " in the existing voltage regulator circuit withdrawed from and blocked " voltage control phase place circuits for triggering " and set up normal phase place and trigger, need the delay of a period of time because of the existence of capacitor, make the moment voltage stabilizing circuit out of control, voltage overshoot easily burns bulb." voltage control phase place circuits for triggering " in the voltage stabilizing circuit of existing pressurizer are too simple in addition, it is only taken a sample to control in the half period of alternating voltage and makes its normality stabilized voltage characteristic undesirable, overtension when motor high speed low-power load is moved has surpassed the 15.5V ceiling voltage limit value of vehicle requirement.Also there is complex process in the actual production of existing pressurizer, the disadvantage that cost is high, wherein the amorphous state of " current transformer " use approaches strip material price height, and the coiling difficulty is difficult to mechanization and produces in enormous quantities, is difficult for applying.

It is good and cost is low that the purpose of this utility model provides a kind of instantaneous and normality stabilized voltage characteristic, and easily mechanization production in enormous quantities has the permanent magnet generator electronic voltage regulator of good application value, to remedy the above-mentioned deficiency of prior art.

The utility model comprises the flange-cooled shell of an aluminium alloy compression casting, and it is characterized in that has an electronic circuit board in the cavity of shell, and the latter's lead-out wire input and output are exposed at outside the shell; Main switch loop, load current sensing loop and all-wave sampling voltage control loop are arranged on the electronic circuit board, and the main switch loop is connected in parallel between input and the shell; Described all-wave sampling voltage control loop is connected by D2～D5 bridge-type, and two outputs of the bridge-type change of current are connected in parallel on the bleeder circuit two ends of being made up of R4 and R5, and described load current sensing loop is serially connected between all-wave sample circuit and the voltage control circuit.

The utility model volume is little, and is firm in structure, and cost is low, and voltage regulation result is good, and illumination is stable, is added in the requirement that can satisfy agricultural transportation vehicle on the generator, and is safe and reliable, and easily mechanization large-scale production has good application value.

Further specify the utility model below by embodiment and accompanying drawing.

Accompanying drawing 1 is an appearance structure schematic diagram of the present utility model.

Accompanying drawing 2 is an internal structure schematic diagram of the present utility model.

Accompanying drawing 3 is a circuit diagram of the present utility model.

The utility model comprises the flange-cooled shell (1) of an aluminium alloy compression casting, and with electronic circuit board of resin encapsulation, the latter's lead-out wire input (2) and output (3) are exposed at outside the shell (1) in its cavity.Main switch loop, load current sensing loop and all-wave sampling voltage control loop are arranged on the electronic circuit board.The main switch loop is made up of switch element CR1 and R1, is connected in parallel between input (2) and the shell (1).Described all-wave sampling voltage control loop is made up of D2～D5, T1, DW1, R5 and C1, and D2～D5 bridge-type connects, and finishes the all-wave change of current, and two outputs of the bridge-type change of current are connected in parallel on the bleeder circuit two ends of being made up of R4 and R5 and finish the all-wave sampling.C1 is connected in parallel on the R5 two ends and plays the phase shift effect.The negative pole of DWI connects the load current sensing loop, and positive pole is connected with the T1 base stage, and the D1 of control signal through being serially connected on its emitter of T1 output is connected on the trigger electrode in main switch loop.Described load current sensing loop is made up of coil Cr, R3 and the switch element CR2 on two groups of iron cores that build up around the sand steel disc, be serially connected between all-wave sample circuit and the voltage control circuit, the load current signal that is detected by CT connects through the trigger electrode of R3 and CR2, controls the contact between its conducting or shutoff all-wave sample circuit and the voltage control circuit.CT in the load current sensing loop is two groups of coils that are wound on the iron core that the sand steel disc builds up.One group is serially connected between input (2) and the output (3), be connected on the trigger electrode of switch element CR2 behind another group serial connection current-limiting resistance R3, CR2 is connected between all-wave sampling and the voltage control, when load current during less than desired value, CR2 turn-offs, T1, D1 elder generation output signal, main switch CR1 turn-offs, make controlled generator be in Light Condition, can make generator and pressurizer when not electricity consumption of vehicle, be in off position, thereby prolong its useful life.And when load current CR2 conducting during greater than desired value, sampled signal is added to DW1 and T1 base stage, and T1 is by the D1 output voltage control signal, and main switch CR1 conducting is stabilized between 11.5～15V the voltage of controlled generator.Because switch element CR2 is serially connected between all-wave sampling and the voltage control, rather than be serially connected in before the sampling, so when CR2 turn-offs, do not influence the work of sample circuit, can set up the whole voltage stabilizing circuit of voltage control after the conducting immediately can be instantaneous not out of control, not overshoot of output voltage can not burnt bulb.

Claims (2)

1. permanent magnet generator electronic voltage regulator, the flange-cooled shell (1) that comprises an aluminium alloy compression casting, it is characterized in that in the cavity of shell (1) electronic circuit board being arranged, the latter's lead-out wire input (2) and output (3) are exposed at outside the shell (1), the main switch loop is arranged on the electronic circuit board, load current sensing loop and all-wave sampling voltage control loop, the main switch loop is connected in parallel between input (2) and the shell (1), described all-wave sampling voltage control loop is connected by D2～D5 bridge-type, two outputs of the bridge-type change of current are connected in parallel on the bleeder circuit two ends of being made up of R4 and R5, and described load current sensing loop is serially connected between all-wave sample circuit and the voltage control circuit.

2. pressurizer as claimed in claim 1 is characterized in that being connected in series a R2, DW1 in parallel on the T1 collector electrode in described all-wave sampling voltage control loop.

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