CN2128803Y

CN2128803Y - Full-protective electronic regulator

Info

Publication number: CN2128803Y
Application number: CN 92212043
Authority: CN
Inventors: 罗波涌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-08
Filing date: 1992-01-08
Publication date: 1993-03-24
Anticipated expiration: 2002-01-08

Abstract

The utility model relates to a full-protective electronic regulator suitable for silicon rectifier generators. A start-up circuit is connected in parallel with a switch circuit, the input terminal is connected with an over-current protecting circuit, the output terminal is connected with an exciting coil, the control terminal of the switch circuit is connected with a voltage control circuit and a feedback circuit, the voltage control circuit is connected with an overheat and over-current protecting circuit, and the feedback circuit is connected with a stator coil or the exciting coil.

Description

Full-protective electronic regulator

The utility model relates to a kind of electronic controller that is applicable to silicon rectification generator.

The adjuster of existing silicon rectification generator generally has two kinds to be that mechanical governor and ordinary electronic are regulated.Mechanical governor is because contact and mechanical parts are easy to wear, useful life is not long, need frequent adjustment in the use, and the voltage-regulation scope is not wide yet, cause superpressure and under-voltage easily, thereby electrical appliance is burnt or electrical appliance work undesired, if be used to start the storage battery charging, also can cause storage battery to overcharge or power shortage, shortened the useful life of storage battery greatly, cause unnecessary loss to the user, though the ordinary electronic adjuster has overcome the problems referred to above, because semiconductor element overcurrent and cross hot extreme difference, be easy to damage because of operation and natural fault, and charging low voltage generator, when the generator stall, as in time not closing electric switch, big electric current flows to generator field coil by adjuster, be easy to cause generator and regulator failure, and waste energy.

The purpose of this utility model is exactly a kind of full guard electronic controller that designs at above-mentioned situation, thereby protects generator and adjuster not to be damaged effectively, has prolonged useful life.

Solution of the present utility model is to have additional protective circuit again on the basis of existing electronic controller circuit; the structure of its circuit is: be parallel with start-up circuit B on the switching circuit A; its input is connected to the current foldback circuit D that joins with power supply S; its output is connected on the F point of magnet exciting coil; control end at switching circuit A connects with the output of voltage control circuit E and feedback circuit C; the input of feedback circuit C is connected on the N point of stator coil C or the F point of magnet exciting coil, and the input of voltage control circuit E is connected on the output of power supply S point and overheating protection circuit F and current foldback circuit D.Its detailed content is described below referring to accompanying drawing:

Referring to accompanying drawing 1; full guard type electronic controller of the present utility model; it is characterized in that on the basis of existing adjuster circuit, having additional protective circuit again; the structure of its circuit is: be parallel with start-up circuit B on the switching circuit A; its input is connected to the current foldback circuit D that joins with power supply S; its output is connected on the F point of magnet exciting coil; control end at switching circuit A connects with the output of voltage control circuit E and feedback circuit C; the input of feedback circuit C is connected on the N point of stator coil C or the F point of magnet exciting coil, and the input of voltage control circuit E is connected on the output of power supply S point and overheating protection circuit F and current foldback circuit D.The concrete course of work is; after power supply S connects; electric current is through current foldback circuit D; start-up circuit B reaches the F point; when circuit or generator just often; through feedback circuit C the loading condition of adjuster is fed back to switching circuit A again, the state that switching circuit A is entered out, otherwise then in the state that closes.After circuit was activated, the excitation wire river of generator was coupled with maximum voltage by switching circuit A through the F point, and at this moment stator line river also induces maximum voltage.This voltage is added on the S point after the rectification circuit rectification of generator inside, by the S point, also is added in voltage control circuit E simultaneously, detects voltage condition.As overtension then signal of voltage control circuit E output give switching circuit A; switching circuit A is closed; make generator voltage decline or adjuster is quit work; current foldback circuit D or overheating protection circuit F can export a high voltage and give voltage control circuit E when too high or output current was excessive when temperature; switching circuit A is closed, and circuit quits work.Thereby protection generator and adjuster run into accident and other incident and avoid damaging; protective circuit of the present utility model includes overcurrent protection, overtemperature protection, short-circuit protection and the generator automatic power-off protection of stopping; be to cross fluidity and cross hot difference and defect such as short circuit can occur and be provided with at existing electronic controller; make to the utlity model has full guard, specific embodiments is referring to accompanying drawing.

Fig. 2 represents the circuit theory diagrams of the utility model embodiment one;

Fig. 3 represents the outside figure that connects of adjuster and generator.

According to Fig. 2, embodiment shown in Figure 3, BG ₁, R ₃, BG ₂, D ₂The switch sections of forming adjuster, R ₁₀And R ₁Constitute actuating section, after S end and power connection, pass through R ₁Provide a faint voltage to field coil L, this voltage passes through R simultaneously ₁₀, D ₂Feed back to BG ₂, make BG ₂Also faint conducting BG ₂Weak conducting, give BG ₁Forward bias is provided, has made BG ₁Also conducting thereupon further strengthens the voltage on the coil L, and the voltage on the L passes through R ₁₀And D ₂Feed back to BG again ₂, up to BG ₁Till the saturation conduction.When the voltage on the field coil L was maximum, the voltage that generator sends was also maximum, and the current potential that the result causes A to order rises, and makes D ₃, D ₄Conducting, BG ₃Also conducting thereupon makes B point shorted to earth, BG ₁, BG ₂Lose bias-off, thereby the S point voltage is also descended thereupon, after voltage descended, circuit is conducting again, because BG ₁Be operated in high on off state, so the highly stable voltage of generating function output.When because line short or field coil fault, when causing the resistance decline between F point and E point, owing to R ₁And R ₁₀Can not offer D ₂, BG ₂Enough inclined to one side energy, making it can't conducting, and entire circuit is ended, thereby has protected adjuster or generator automatically, R among the figure ₇, R ₆, R ₈, D ₅Constituted overheating protection circuit, when adjuster raises because of causing temperature unusually, thermistor R ₆Resistance descend, cause the rising of A point current potential, BG ₃Conducting ends circuit, stops output, has realized temperature protection.R ₇, R ₈Play the dividing potential drop effect, D ₅Play buffer action, R ₅, R ₄, R ₉Constitute the voltage divider of voltage control circuit, C ₁The switching frequency that reduces adjuster prevents that switching loss is too high, D ₁Absorb the inverse peak voltage that L produces when adjuster ends, prevent to puncture BG ₁The present embodiment is applicable to generator excitatory be self-excitation or and the automotive gasoline engine of the shared power supply excitation of dynamo ignition system.

Fig. 4 represents the circuit theory diagrams of the utility model embodiment two.

Fig. 5 represents the outside figure that connects of adjuster and generator.

Embodiment shown in Figure 4 is to have increased overcurrent and generator stop-working protection on embodiment basis shown in Figure 2.When generator stops, though R ₁A very weak exciting curent is provided for field coil L, but not running of generator does not have induced voltage on the stator coil L ', thereby make no-voltage on the N end, BG ₂, BG ₁, BG ₄All end, entire circuit stops output, and in like manner, during owing to field coil, stator coil fault or F and E short circuit, the N point also can't be responded to normal voltage, makes BG ₂, BG ₁, BG ₄Also can't conducting, entire circuit is ended, R ₁₃, BG ₅, R ₁₂Constitute current foldback circuit, when circuit surpasses rated current, R ₁₃On voltage make BG ₅Conducting is risen A point current potential, causes entire circuit to end, and has reached the purpose of overcurrent protection.D among the figure ₆Be rectifier diode, the alternating current on the stator coil L ' is become Rectified alternating current, by isolating diode D ₂Add to BG ₂Make it conducting, C ₂Be filter capacitor, R ₁₁Be C ₂Bleeder resistance, R ₁₀It is current-limiting resistance.The present embodiment be applicable to generator excitatory be it swash or only with the automotive Diesel engine of a power supply of engine start partial common.

The full guard type electronic controller that the utility model provides is to increase protective circuit on the basis of existing electronic controller; both solved the defective of mechanical governor voltage instability; solved short problem of ordinary electronic adjuster life-span again; also avoided simultaneously ought be to stall after; in time do not close electric switch; and the electric current of power supply pours in down a chimney to the generator magnetizing coil, thereby has shortened the life-span of adjuster and field coil, and has wasted the phenomenon generation of the energy.

Claims

1; full guard type electronic controller; feature of the present utility model is to have additional protective circuit again on the basis of existing electronic controller circuit; the structure of its circuit is: be parallel with start-up circuit B on the switching circuit A; its input is connected to the current foldback circuit D that joins with power supply S; its output is connected on the F point of magnet exciting coil; control end at switching circuit A connects with the output of voltage control circuit E and feedback circuit C; the input of feedback circuit C is connected on the N point of stator coil G or the F point of magnet exciting coil, and the input of voltage control circuit E is connected on the output of power supply S point and overheating protection circuit F and current foldback circuit D.