A kind of claw pole electric generator excitation voltage regulation device
Technical field
The present invention relates to a kind of voltage regulator more particularly to a kind of claw pole electric generator excitation voltage regulation devices, realize pawl
Pole generator circuit stability under different rotating speeds exports alternating current 220V voltage, belongs to generator voltage and adjusts field.
Background technology
In the large scale equipment in production and living field, dynamical system and control system mostly by driven by engine generator,
Great changes have taken place with working condition difference for generator speed, and load (electrical equipment) state of generator also changes at any time, can lead
Cause the variation of generator output voltage.The output voltage variation of electrical equipment requirement generator is small, and therefore, voltage regulator is
Essential part, voltage regulator make the output voltage of generator keep stablizing in rotating speed and load variation.
For existing voltage regulator generally there are two types of realization method, a kind of is real using the digital circuit of microprocessor controller
It is existing, such as utility model patent《Car generator voltage controller with microprocessor controller》(ZL 200620002951.3),
Microprocessor controller electromagnetism interference is poor, high to running environment requirement, and microprocessor controller program can in the case of bad environments
Exception can occur, therefore this voltage regulator exports unstable, poor reliability;Another kind uses analog circuit to realize, strictly according to the facts
Use new patent《Car generator voltage controller》(ZL 200520087591.7), utility model patent《Vehicle power supply and hair
Motor control assembly》(ZL 200720095723.X) and utility model patent《Car generator voltage controller》(ZL
200620052038.4) it is, that circuit is complicated, volume is big the defects of this voltage regulator.
The content of the invention
Present invention solves the technical problem that it is:Overcome the deficiencies of the prior art and provide a kind of claw pole electric generator excitation voltage
Adjuster, circuit is simple, is easily achieved, strong antijamming capability, system reliability height.
The present invention technical solution be:A kind of claw pole electric generator excitation voltage regulation device, including control circuit, driving
Circuit, loop of power circuit and feedback unit;The input terminal of control circuit and the output terminal of feedback unit connect, the output of control circuit
End is connected with the input terminal of driving circuit, the input terminal connection of the output terminal of driving circuit and loop of power circuit, loop of power circuit it is defeated
The input terminal of outlet and feedback unit is connected with the Exciting Windings for Transverse Differential Protection of pawl machine generator;
Feedback unit gathers the actual output voltage U0 of claw pole electric generator in real time, and feedback voltage is obtained after being modulated to it
Uf is exported to control circuit;The control circuit real-time reception given voltage Ui and feedback voltage Uf of feedback unit output, and to giving
Constant voltage Ui is modulated to obtain modulated voltage, is generated according to the difference situation of change of modulated voltage and feedback voltage
Pwm signal is exported to driving circuit;The virtual voltage of the claw pole electric generator is identical with the modulation rate of given voltage Ui;Driving
Circuit obtains drive signal after amplifying to pwm signal, and exports to loop of power circuit;Loop of power circuit connects under the control of drive signal
Logical and shut-off obtains modulated voltage and exports in real time to give claw pole electric generator Exciting Windings for Transverse Differential Protection, so that the reality of claw pole electric generator is defeated
Go out voltage and progressively reach given voltage Ui.
The control circuit include SG3524 control chip, PWM output frequencies setup unit, reference voltage setup unit and
Error amplifier phase compensation unit;
It is controlled simultaneously with SG3524 one end that reference voltage setup unit includes resistance R6 and resistance R7, resistance R6 and resistance R7
The 2 feet connection of coremaking piece, the other end of resistance R6 are connected with 11 feet of SG3524 control chips, the other end of resistance R7 and
The 16 feet connection of SG3524 control chips;
PWM output frequencies setup unit includes resistance R5 and capacitance C1, and the both ends of resistance R5 control core with SG3524 respectively
4 feet of piece and the connection of 6 feet, the both ends of capacitance C1 are connected respectively with 4 feet of SG3524 control chips and 7 feet;
Error amplifier phase compensation unit includes the resistance R8 being connected in parallel and capacitance C2, resistance R8 and capacitance C2 are in parallel
The circuit both ends of connection are connected respectively with 9 feet of SG3524 control chips and 1 foot;
15 feet of SG3524 control chips connect+15V external power supplies, 14 feet, 11 feet, 8 feet, 4 feet and 5 feet ground connection, 12 feet and
13 foot output pwm signals.
The feedback unit includes resistance R1, resistance R2, resistance R3 and resistance R4, one end of resistance R1 and claw pole electric generator
Actual output voltage connection, the other end is connected with one end of resistance R2, the other end of resistance R2 respectively with resistance R3 and resistance
One end connection of R4, the other end ground connection of resistance R3, the other end of resistance R4 are connected with 1 foot of SG3524 control chips.
The driving circuit includes IR2110 driving chips, diode V1, resistance R9, resistance R10, resistance R11, resistance
R12, charging capacitor C1 and capacitance C2;
The cathode of diode V1 is connected with 6 feet of IR2110 driving chips, and the anode of diode V1 is connected with+15V power supplys,
The cathode of charging capacitor C1 is connected with 6 feet of IR2110 driving chips, the anode of charging capacitor C1 and the 5 of IR2110 driving chips
Foot connects, and capacitance C2 is connected between 6 feet of IR2110 driving chips and 5 feet, and resistance R9 is connected to the 7 of IR2110 driving chips
Between foot and 5 feet, one end of resistance R11 is connected with 7 feet of IR2110 driving chips, the other end and loop of power circuit of resistance R11
Connection;1 foot of IR2110 driving chips is connected simultaneously with one end of resistance R10 and one end of resistance R12, and resistance R10's is another
End ground connection, the other end of resistance R12 are connected with loop of power circuit;5 feet of IR2110 driving chips and the excitation of pawl machine generator around
Group connection, 10 feet are connected with the pwm signal that control circuit exports, and 12 feet connect high level, 3 feet and 9 foot connection+15V power supplys, and 11
Foot, 13 feet and 2 feet ground connection.
The loop of power circuit includes switching tube V6, switching tube V7, diode V2, diode V4, diode V5 and diode
V7;
The resistance R11 connections of the grid and driving circuit of switching tube V6, the source electrode of switching tube V6 simultaneously with pawl machine generator
One end of Exciting Windings for Transverse Differential Protection, the cathode connection of the anode of diode V2, diode V3, the other end of pawl machine generator excitation winding are same
When be connected with the drain electrode of the anode of diode V7, the cathode of diode V4 and switching tube V5, the drain electrode of switching tube V6 is on the one hand
It is connected simultaneously with the cathode of diode V7 and the cathode of diode V2, on the other hand exports the voltage of pawl machine generator;Diode
The anode of V3, the anode of diode V4, the source grounding of switching tube V5;The grid of switching tube V5 and the resistance of driving circuit
R12 connections.
The present invention compared with prior art the advantages of be:
(1) present invention realizes that voltage is adjusted using SG3524 control chips in a manner that IR2110 driving chips are combined,
The advantages of peripheral circuit is realized using simple discrete component resistance capacitance, had both analog circuit and digital circuit, is not required to
User's programming program, the not perfect risk brought of no software are wanted, while resistance capacitance is not affected by the external environment, anti-electromagnetism is done
Immunity is strong, low to the running environment such as operating conditions such as temperature, humidity, vibration noise requirement, and circuit is simple, small power consumption, function list
One, the complexity of circuit had not only been reduced, but also has improved stability and reliability.
(2) given voltage value is modulated at by SG3524 controls chip of the present invention by peripheral circuit reference voltage setup unit
In the manageable scope of chip, feedback unit is in proportion modulated generator virtual voltage by R1, R2, R3 and R4,
So as to have greatly expanded the operating voltage range of excitation voltage regulation device.
(3) traditional microprocessor controller combination peripheral circuit be based on analog-to-digital conversion and digital-to-analogue conversion realize signal amplification with
And voltage is adjusted, and realizes complexity, transfer process easily malfunctions;Traditional analog circuit generally passes through operational amplifier, comparator
And logic gate device etc. realizes that signal amplification and voltage are adjusted, device is more and circuit is complicated, and the present invention utilizes IR2110
Driving chip realizes the amplification of pwm signal, while the adjusting of voltage is realized using switching tube, and hardware circuit is simple, it is easy to accomplish,
The volume of voltage regulator is reduced, simple circuit structure also reduces voltage adjusting caused by certain device fault in circuit
Device failure, so as to further improve reliability.
Description of the drawings
Fig. 1 is voltage regulator composition frame chart of the present invention;
Fig. 2 is control circuit of the present invention and feedback unit circuit diagram;
Fig. 3 is present invention driver circuit and loop of power circuit circuit diagram.
Specific embodiment
As shown in Figure 1, claw pole electric generator excitation voltage regulation device of the present invention include control circuit 201, driving circuit 202,
Loop of power circuit 203 and feedback unit 205;The input terminal of control circuit 201 is connected with the output terminal of feedback unit 205, control electricity
The output terminal on road 201 is connected with the input terminal of driving circuit 202, the output terminal of driving circuit 202 and the input of loop of power circuit 203
End connection, the output terminal of loop of power circuit 203 and the input terminal of feedback unit 205 are connected with the Exciting Windings for Transverse Differential Protection of pawl machine generator;
Feedback unit 205 gathers the actual output voltage U0 of claw pole electric generator in real time, is fed back after being modulated to it
Voltage Uf is exported to control circuit 201;The feedback that 201 real-time reception given voltage Ui of control circuit and feedback unit 205 export
Voltage Uf, and given voltage Ui is modulated to obtain modulated voltage, according to the difference of modulated voltage and feedback voltage
Value situation of change generation pwm signal is exported to driving circuit 202;The virtual voltage of the claw pole electric generator and given voltage Ui's
Modulation rate is identical;Driving circuit 202 obtains drive signal after amplifying to pwm signal, and exports to loop of power circuit 203;Power
Circuit 203 turns on and off under the control of drive signal, obtains modulated voltage and export in real time to give claw pole electric generator excitation
Winding, so that the actual output voltage of claw pole electric generator progressivelyes reach given voltage Ui.
As shown in Fig. 2, control circuit 201 uses the single-ended PWM way of outputs, by SG3524 controls chip 301, reference voltage
Setup unit 302, PWM output frequencies setup unit 304 and error amplifier phase compensation unit 305 form.Reference voltage
Setup unit 302 is made of R6 and R7, and 2 feet that one end of resistance R6 and resistance R7 control chip with SG3524 simultaneously are connected, electricity
The other end for hindering R6 is connected with 11 feet of SG3524 control chips, the other end of resistance R7 and the 16 of SG3524 control chips 301
Foot connects, and R6 and R7 and 16 feet composition bleeder circuit carry out reference voltage partial pressure modulation and obtain modulated voltage Ut, as
The input voltage of error amplifier inside SG3524 control chips 301.PWM output frequencies setup unit 304 is by R5 and C1 groups
Into the both ends of R5 are connected respectively with 4 feet of SG3524 control chips and 6 feet, and the both ends of capacitance C1 control core with SG3524 respectively
4 feet of piece and the connection of 7 feet, R5 and C1 codetermine the output frequency of PWM, set its frequency as 20KHz in the design, error is put
Big device phase compensation unit 305 is composed in parallel by C2 and R8, and the circuit both ends being connected in parallel control the 9 of chip with SG3524 respectively
Foot and the connection of 1 foot, as the phase compensating circuit of error amplifier, for exporting feedback unit 205 to control circuit 201
Feedback voltage Uf carries out phase compensation, makes Uf with Ut phases consistent.15 feet of SG3524 control chips 301 connect+15V external electricals
Source, 14 feet, 11 feet, 8 feet, 4 feet and 5 feet ground connection, 12 feet and 13 foot Parallel opertation pwm signals.
Feedback unit 205 includes resistance R1, resistance R2, resistance R3 and resistance R4, one end of resistance R1 and claw pole electric generator
Actual output voltage connection, the other end is connected with one end of resistance R2, the other end of resistance R2 respectively with resistance R3 and resistance
One end connection of R4, the other end ground connection of resistance R3, the other end of resistance R4 are connected with 1 foot of SG3524 control chips 301.Instead
Feedback unit 205 obtains feedback voltage Uf and is sent to SG3524 controls after the excitation voltage of generator is modulated by R1, R2, R3 and R4
Error amplifier inside coremaking piece 301, error amplifier compared with Uf, export Ut so as to change PWM pulsewidths (duty cycle).
When the difference of Ut and Uf is timing, pwm signal duty cycle increases;When difference is bears, pwm signal duty cycle reduces.
As shown in figure 3, driving circuit 202 includes IR2110 driving chips, diode V1, resistance R9, resistance R10, resistance
R11, resistance R12, charging capacitor C1 and capacitance C2;The cathode of diode V1 is connected with 6 feet of IR2110 driving chips, two poles
The anode of pipe V1 is connected with+15V power supplys, and the cathode of charging capacitor C1 is connected with 6 feet of IR2110 driving chips, charging capacitor C1
Anode be connected with 5 feet of IR2110 driving chips, capacitance C2 is connected between 6 feet of IR2110 driving chips and 5 feet, resistance
R9 is connected between 7 feet of IR2110 driving chips and 5 feet, and one end of resistance R11 is connected with 7 feet of IR2110 driving chips,
The other end of resistance R11 is connected with loop of power circuit 203;1 foot of IR2110 driving chips while one end with resistance R10 and resistance
One end connection of R12, the other end ground connection of resistance R10, the other end of resistance R12 are connected with loop of power circuit 203;IR2110 drives
5 feet of chip are connected with the Exciting Windings for Transverse Differential Protection of pawl machine generator, and 10 feet are connected with the pwm signal that control circuit 201 exports, and 12 feet connect
High level, 3 feet and 9 foot connection+15V power supplys, 11 feet, 13 feet and 2 feet ground connection.
Loop of power circuit 203 includes switching tube V6, switching tube V7, diode V2, diode V4, diode V5 and diode
V7;
The grid of switching tube V6 is connected with the resistance R11 of driving circuit 202, and the source electrode of switching tube V6 generates electricity simultaneously with pawl machine
One end of machine Exciting Windings for Transverse Differential Protection, the cathode connection of the anode of diode V2, diode V3, the other end of pawl machine generator excitation winding
It is connected simultaneously with the drain electrode of the anode of diode V7, the cathode of diode V4 and switching tube V5, one side of drain electrode of switching tube V6
Face is connected simultaneously with the cathode of diode V7 and the cathode of diode V2, on the other hand exports the voltage of pawl machine generator;Two poles
The anode of pipe V3, the anode of diode V4, the source grounding of switching tube V5;The grid of switching tube V5 and driving circuit 202
Resistance R12 connections.
The output of control circuit 201 connects the high side logic input control pin 10 of IR2110 driving chips, and IR2110 drives
The low side logic input control pin 12 of dynamic chip connects high level, and switching tube V5 (power device) is thus made to be in normally open
And V6 is turned on and off according to the SG3524 pwm signals that chip is controlled to export to adjust it.When 7 feet of IR2110 driving chips are defeated
When going out high level, V6 conductings, then the excitation voltage of generator is just added in by power device V5, V6 in Exciting Windings for Transverse Differential Protection, the arteries and veins of PWM
Rush the conduction duration that width determines Exciting Windings for Transverse Differential Protection.
When claw pole electric generator rotating speed changes, claw pole electric generator excitation voltage regulation device exports pulse by changing it
Width adjusts the voltage being added in Exciting Windings for Transverse Differential Protection, so as to having the function that stable claw pole electric generator output voltage.
The course of work of claw pole electric generator excitation voltage regulation device is:When the rising of claw pole electric generator rotating speed, claw pole electric generator
Output voltage rises, and feedback unit 205 is exported to the feedback voltage Uf risings of control circuit 201, and SG3524 is controlled in chip
SG3524 error amplifiers output Ut-Uf declines, and 12 feet and 13 foot output pulse widths of SG3524 control chips decline, the power generation of pawl machine
Machine Exciting Windings for Transverse Differential Protection ON time declines, and exciting current declines, and claw pole electric generator rotating speed declines, under claw pole electric generator output voltage
Drop, above process Xun Huan carry out, and finally make claw pole electric generator output voltage stabilization.
Conversely, when claw pole electric generator rotating speed declines, claw pole electric generator output voltage can be caused to decline, feedback unit 205
It exports to the feedback voltage Uf declines of control circuit 201, SG3524 controls the SG3524 error amplifiers output Ut-Uf in chip
Rise, 12 feet and 13 foot output pulse widths of SG3524 control chips rise, and Exciting Windings for Transverse Differential Protection ON time rises, on exciting current
It rises, claw pole electric generator rotating speed rises, and claw pole electric generator output voltage rises, and finally makes claw pole electric generator output voltage stabilization.
The work process explanation of above-mentioned claw pole electric generator rotating speed rise and fall, when generator speed changes, by anti-
Feedback unit 205 makes the error amplifier 504 of SG3524 control chips export and also change, so as to which SG3524 be controlled to control chip
The pulsewidth of output pwm signal also respective change, causes exciting current also to change therewith, finally makes claw pole electric generator output voltage steady
It is fixed.In this way, just it is provided with the function of automatic voltage regulation.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.