CN1417938A - Voltage regulator for double-loop exciting current coutrolling vehicle power generator - Google Patents
Voltage regulator for double-loop exciting current coutrolling vehicle power generator Download PDFInfo
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- CN1417938A CN1417938A CN 02153080 CN02153080A CN1417938A CN 1417938 A CN1417938 A CN 1417938A CN 02153080 CN02153080 CN 02153080 CN 02153080 A CN02153080 A CN 02153080A CN 1417938 A CN1417938 A CN 1417938A
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- exciting current
- exciting
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- voltage regulator
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Abstract
The present invention is so designed that after simultaneously sampling the output voltage and the exciting current of the power generator, the sampled output voltage is compared with reference voltage signal to produce error voltage signal and the error voltage signal is synthesized with fixed-frequency triangular wave signal to produce reference signal for exciting current; and the sampled exciting current is compared with reference value of exciting current to form pulse width modulated signal for driving the switch in exciting powder supply circuit. The comple regulator for the close-loop control of both output voltage and exciting current can reduce the output ripple of vehicular power generator, eliminate the effect of load change and rotation speed change to output voltage, and protect powder generator against exciting loop faults.
Description
Technical field automobile application electric technology
Background technology automobile current generator output voltage regulator adopts the error signal of utilizing generator output voltage and reference voltage to compare directly to control generator excitation circuit powered switch state usually.The rotating speed effect of the load effect of the output voltage ripple of generator, dynamic responding speed, output voltage and output voltage all is subjected to the influence of output voltage with respect to the hysteresis effect of exciting current under this control mode.Portioned product has the protection sample resistance to avoid the overcurrent of exciting current at energized circuit, and the magnet exciting coil fault is shielded, and the protection sample resistance is to the not influence of loop control characteristic of steady state.
The design of this device of summary of the invention is sampled to the output voltage and the exciter current of generator of generator simultaneously, compare the reference signal of error voltage signal that the back produces and the synthetic back generation of triangular signal exciting current with the sampled value of output voltage and reference voltage, the sampled value and the exciting current fiducial value of exciting current are compared, and result relatively forms the switch that pulse-width signal is used to drive the excitation current supply circuit.This control mode can reduce the alternator for vehicle output voltage ripple, eliminates the influence to generator output voltage of load variations and rotation speed change.
Description of drawings dot-dash wire frame is outward alternator for vehicle and load, battery principle figure, and 23 is storage battery, and 24 is load on the car, and 25 are generator output winding, and 26 is output rectifier, and 27 is the generator excitation mains unit, and 28 is the generator excitation winding.Be the alternator for vehicle output voltage regulator of indication of the present invention in the dot-dash wire frame.1,2 is the dividing potential drop sampling resistor, and resistance 3, electric capacity 4 are the low-pass filtering element; Resistance 5, voltage stabilizing didoe 6, resistance 7 and triode 8 constitute the simple linear pressurizer, electric capacity 10, resistance 11 are the proportional integral network, and resistance 12, voltage-stabiliser tube 13 constitute voltage reference, and 14,19 is comparator, 16 is saw-toothed wave generator, resistance 15,17 signal synthesis of resistance; 18 is the amplitude limit voltage-stabiliser tube; 20 is the energized circuit switching device: resistance 21 is exciting current sampling device; Diode 22 is a fly-wheel diode.
This device of embodiment adopts voltage loop and the compound control of current loop dicyclo, and voltage loop is: output voltage carries out low-pass filtering through resistance 3,4 pairs of sampled voltages of electric capacity then through the sampling of resistance 1,2 dividing potential drops; Sampled signal is delivered to comparator 14 and is compared with reference voltage, its error signal and triangular wave synthesize later on and field circuit compares through comparator 19 once again, the fixed pulse-width signal driving power frequently of output pipe 20 reaches the purpose of control exciting current with regulated output voltage.Current loop is contained within the voltage loop, and exciting current sample resistance 21, comparator 19, power switch 20 constitute closed loop, and the peak value of exciting current all is subjected to the restriction that front stage circuits is exported to definite value in each work period; Because the input amplitude of comparator 19 is subjected to the restriction of voltage-stabiliser tube 18, limited the maximum of exciting current thus, thereby this partial circuit can be allowed the sustained short-circuit of magnet exciting coil or the fault of other form, and this device is played a protective role in addition.The reference voltage of voltage loop is made of resistance 12, voltage-stabiliser tube 13.The working power of integrated circuit is provided by the linear stabilized power supply that resistance 5, voltage stabilizing didoe 6 and triode 8 constitute in this device, and resistance 7 is used to reduce the power consumption of triode 8, and electric capacity 9 is used for the High frequency filter to triode 8 output voltages.Electric capacity 10 and resistance 11 constitute the PID network of comparator 14.16 is the fixed frequency triangular-wave generator, can by application-specific integrated circuit (ASIC) or common operational amplifier or put to make up to form.The output signal of the output signal of comparator 14 and triangular-wave generator 16 through resistance 15,17 synthetic and behind voltage-stabiliser tube 18 amplitude limits as the benchmark of exciting current magnitude comparator 19.Diode 22 constitutes the fly-wheel diode of energized circuit at switch 20 blocking intervals.In this device, reference element 13 serviceability temperature coefficients are less than the kind of 40ppm.Power switch component uses common power triode or common power field effect transistor.Fly-wheel diode adopts the fast kind of recovering to reduce circuit loss.
Circuit in the frame of broken lines, comprise reference element 12,13, comparator 14,19, triangle wave generating circuit 16, signal synthesizes amplitude limit network 15,17,18, can use common integrated operational amplifier or common voltage comparison integrated circuit to make the function that module realizes a plurality of element circuits, the function of all or part of each element circuit of realization of perhaps general PWM integrated circuit.This device uses 500hz to a certain fixed modulation frequency between the 2Khz, and operating frequency is decided by triangular-wave generator 16.The actual measurement generator is under 10% to 100% the situation of change of generator output-current rating at output current when ambient temperature 0 to 90 is spent, and the output voltage drift is 0.5%～0.6%, and voltage ripple is 0.3%～0.5%.
Claims (3)
- Denomination of invention: double-loop exciting current direct controlled type alternator for vehicle voltage regulatorThe present invention is specially at the alternator for vehicle voltage regulator, technical characterictic is: set the exciting current fiducial value according to the error signal that generator output voltage sampling value and reference voltage set point compare, with exciting current reference set value and exciter current of generator sampled value with compare, according to comparative result the excitation current supply circuit is carried out the control of fixed frequency switch, thereby realized the dicyclo Compound Control Technique of generator output voltage closed-loop control and exciting current closed-loop control.The applicant requires following 3 rights:1, the Current Control comparator (19), exciting power switching tube (20), the exciting current sample resistance (21) that make up with integrated operational amplifier or integrated voltage comparator make up the exciting current closed loop fixed frequency switch control that realizes the alternator for vehicle voltage regulator.
- 2, utilize thick film technology or integrated circuit (IC) design technology that the exciting current closed loop fixed frequency switch control that integration module is realized the alternator for vehicle voltage regulator is made in current comparator (19), all or part of combination of exciting power switch (20) exciting current sample resistance (21).
- 3, utilize of the exciting current closed loop fixed frequency switch control of the integrated circuit of existing specific function with Current Control comparator (19), exciting power switching tube (20), exciting current sample resistance (21) combination realization alternator for vehicle voltage regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153080 CN1417938A (en) | 2002-12-10 | 2002-12-10 | Voltage regulator for double-loop exciting current coutrolling vehicle power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153080 CN1417938A (en) | 2002-12-10 | 2002-12-10 | Voltage regulator for double-loop exciting current coutrolling vehicle power generator |
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| Publication Number | Publication Date |
|---|---|
| CN1417938A true CN1417938A (en) | 2003-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02153080 Pending CN1417938A (en) | 2002-12-10 | 2002-12-10 | Voltage regulator for double-loop exciting current coutrolling vehicle power generator |
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| CN (1) | CN1417938A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539898A (en) * | 2010-12-20 | 2012-07-04 | 西安开容电子技术有限责任公司 | Design method of adjustable pulse width current generation and detection circuit |
| CN106100086A (en) * | 2016-08-04 | 2016-11-09 | 广东欧珀移动通信有限公司 | A kind of charging current control method, device and terminal |
| CN108011551A (en) * | 2017-12-24 | 2018-05-08 | 佛山中锦微电科技有限公司 | The differential modulated formula of preset bipolar pulse determines frequency excitation generator voltage regulator |
-
2002
- 2002-12-10 CN CN 02153080 patent/CN1417938A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539898A (en) * | 2010-12-20 | 2012-07-04 | 西安开容电子技术有限责任公司 | Design method of adjustable pulse width current generation and detection circuit |
| CN102539898B (en) * | 2010-12-20 | 2015-02-18 | 西安开容电子技术有限责任公司 | Adjustable pulse width current generation and detection circuit |
| CN106100086A (en) * | 2016-08-04 | 2016-11-09 | 广东欧珀移动通信有限公司 | A kind of charging current control method, device and terminal |
| CN106100086B (en) * | 2016-08-04 | 2021-04-23 | Oppo广东移动通信有限公司 | Charging current adjusting method and device and terminal |
| CN108011551A (en) * | 2017-12-24 | 2018-05-08 | 佛山中锦微电科技有限公司 | The differential modulated formula of preset bipolar pulse determines frequency excitation generator voltage regulator |
| CN108011551B (en) * | 2017-12-24 | 2020-12-08 | 如东县燕川物业管理有限公司 | Differential modulation type constant frequency excitation generator voltage regulator with preset bidirectional narrow pulse |
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Addressee: Wang Yunguo Document name: Notification before expiration of term |
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| WD01 | Invention patent application deemed withdrawn after publication |