CN202435328U - An automatic voltage regulator and a system equipped with the same - Google Patents

An automatic voltage regulator and a system equipped with the same Download PDF

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Publication number
CN202435328U
CN202435328U CN2011204153277U CN201120415327U CN202435328U CN 202435328 U CN202435328 U CN 202435328U CN 2011204153277 U CN2011204153277 U CN 2011204153277U CN 201120415327 U CN201120415327 U CN 201120415327U CN 202435328 U CN202435328 U CN 202435328U
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China
Prior art keywords
voltage regulator
automatic voltage
unit
control
fit
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Expired - Lifetime
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CN2011204153277U
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Chinese (zh)
Inventor
R·莫克利
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ABB Technology AG
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ABB T&D Technology AG
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Abstract

The utility model relates to an automatic voltage regulator and a system equipped with the same. The automatic voltage regulator 12 used for controlling a synchronous machine 14 comprises: a rectifier unit 38 used for rectifying input voltage into DC voltage; a capacitor unit 40 that is connected to the rectifier unit 38 and is suitable for storing electric energy; and a chopper unit 42 which is connected with the capacitor unit 40 and is suitable for generating pulse width modulation output voltage based on the DC voltage. The output voltage is provided to the synchronous machine 14. The automatic voltage regulator 12 also comprises a control unit 30 which is used for controlling the chopper unit 42 so that the synchronous machine 14 is controlled through the pulse width modulation output voltage.

Description

Automatic voltage regulator and have the system of this type of automatic voltage regulator
Technical field
The utility model relates to the field of the operation of synchronous machine.Specifically, the utility model system of relating to automatic voltage regulator and having this automatic voltage regulator.
Background technology
Synchronous motor (for example generator or motor) generally includes exciter, and exciter is supplied to electric current the armature winding of synchronous motor.Automatic voltage regulator can be used for controlling the electric current that is sent to exciter.Automatic voltage regulator can be fit to come control synchro via the exciter electric current.Through being connected to transformer for the power network of synchronous motor power supply, can input current be supplied to automatic voltage regulator, generate the exciter electric current from it.
The utility model content
The purpose of the utility model provides a kind of automatic voltage regulator that can use for the input voltage (for example for DC, AC and nonsinusoidal waveform) of all kinds.
This purpose realizes through the theme of independent claims.Through dependent claims and following description, other example embodiment is conspicuous.
An aspect of the utility model relates to a kind of automatic voltage regulator that is used for control synchro (synchronousmachine) (for example generator or motor).
An embodiment according to the utility model; Automatic voltage regulator comprise be used for the input voltage rectification be dc voltage rectifier unit, be connected to rectifier unit and suitable storage of electrical energy capacitor unit, be connected to capacitor unit and be fit to and generate the chopper unit of pulse-width modulation output voltage (said output voltage will offer synchronous motor) and the control unit that is used to control the chopper unit from dc voltage, make and come control synchro via the pulse-width modulation output voltage.
In short, automatic voltage regulator uses rectifier stage (or unit), DC chain (DC link) capacitor level and chopper output stage to control the output voltage of the armature winding that is supplied to synchronous motor.The chopper unit can be counted as the electronic building brick that is fit to generate by means of controlled electronic switch the pulse-width modulation output voltage.
Rectifier unit, capacitor unit and chopper unit can be the power electronics unit with power electronic assembly.
Input voltage can be AC voltage, dc voltage and/or non-sine input voltage.Because its design can be for the input voltage operation automatic voltage regulator of all kinds.
The pulse-width modulation output voltage can directly be supplied to synchronous motor, perhaps can be supplied to the exciter (exciter) of synchronous motor.Under second kind of situation, automatic voltage regulator can be fit to generate controlled excitation device voltage/current.
According to an embodiment of the utility model, the chopper unit comprises electronic switch and/or fly-wheel diode, and this can produce the chopper unit of simple designs.
According to an embodiment of the utility model, electronic switch is IGBT.Specifically, IGBT can be suitable for the high electric current of switch as quick as thought.
According to an embodiment of the utility model, capacitor unit comprises internal capacitor, and can be connected to external capacitor.These unit of automatic voltage regulator can be arranged on the veneer or single device in.Through the additional external capacitor, can be easy to reconfigure automatic voltage regulator.
An embodiment according to the utility model; Automatic voltage regulator comprises the measurement interface, and said measurement interface is fit to be connected to the line voltage converter and is used to measure line voltage, is connected to the electric moter voltage converter and is used to measure electric moter voltage and/or is connected to the current measurement converter and be used to measure current of electric.In other words, automatic voltage regulator, especially control unit can be fit to receive the line voltage that synchronous motor connects and the measured value of motor and/or power network current.Like this, can control the pulse-width modulation output voltage and the monocycle control (one loop control) of setting up synchronous motor via relative line voltage and power network current.
In addition, automatic voltage regulator, especially control unit can be fit to receive the measured value of the electric moter voltage of synchronous motor.Under the situation that the generator circuit breaker between synchronous motor and the electrical network breaks off, electric moter voltage need not identical with line voltage.The measurement of two voltages can be used for making two voltages synchronous via the control of control pulse-width modulation output voltage.
According to an embodiment of the utility model, control unit is adapted at electric moter voltage and line voltage closed generator circuit breaker when synchronous.In other words, automatic voltage regulator can provide automatic synchronizing function property.
According to an embodiment of the utility model, measure interface and be fit to receive numeral input and/or analog input from external measurement device.Measure interface and can receive the other measured value from other device, the for example state of the diode bridge between the speed of speed control or exciter and the synchronous motor.
According to an embodiment of the utility model, automatic voltage regulator comprises the communication interface that is used for carrying out with other device data communication.For example, data communication can comprise serial bus communication.
According to an embodiment of the utility model, control unit is fit to receive control command via communication interface, and/or control unit is fit to send measurement data via communication interface.In other words, automatic voltage regulator can provide remote control function property.
According to an embodiment of the utility model, control unit is fit to carry out data communication with the other control unit of the other automatic voltage regulator of the other synchronous motor of control, makes that the load of the synchronous motor on the power network is synchronous.Therefore, it is functional that automatic voltage regulator can provide load Sharing.It is synchronous that a plurality of (same design) automatic voltage regulator can be used for the load of some synchronous motors.
According to an embodiment of the utility model, control unit is fit to carry out data communication with the other control unit of the other automatic voltage regulator that is fit to the same synchronous motor of control.When can being adapted at detecting internal fault by other automatic voltage regulator, takes over by automatic voltage regulator control.Like this, can adopt two (same design) automatic voltage regulators to constitute dual channel system.One of them can be the subsequent use of another automatic voltage regulator for these automatic voltage regulators.
The utility model relate to a kind of have synchronous motor and as the system of the automatic voltage regulator of above and the following stated on the other hand.
According to an embodiment of the utility model, this system comprises the automatic voltage regulator of the other same design that is connected to same synchronous motor, and wherein automatic voltage regulator is adapted at the functional of the other automatic voltage regulator of failure condition lower linking tube.
According to an embodiment of the utility model, this system comprises the automatic voltage regulator of the other same design that is connected to other synchronous motor, and wherein two or more automatic voltage regulators are suitable for the load Sharing of two or more synchronous motors.
From the following stated embodiment and the explanation carried out with reference to the following stated embodiment, these aspects of the utility model and other aspect will be very obvious.
Description of drawings
Hereinafter illustrate in greater detail the theme of the utility model with reference to the example embodiment shown in the accompanying drawing.
Fig. 1 schematically illustrates a embodiment according to the utility model, has the system of automatic voltage regulator.
In principle, in the accompanying drawing, same section is equipped with same reference numerals.
Embodiment
Fig. 1 illustrates the system 10 with the automatic voltage regulator 12 that is electrically connected to synchronous motor 14 (for example generator).Synchronous motor 14 is electrically connected to power network 16.
Automatic voltage regulator 12 comprises measures interface 18 or measuring unit 18, measures interface 18 or measuring unit 18 receive Autosyn 14 and electrical network 16 via input 20a, 20b, 20c measurement and controlling value.Input 20a is connected to line voltage measurement translator 22 and is used to measure line voltage.Input 20b is connected to electric moter voltage measurement translator 24 and is used to measure electric moter voltage.Input 20c is connected to current measurement converter 26 and is used to measure current of electric.
Measure interface 18 and comprise generator circuit breaker output 20d, generator circuit breaker output 20d is used to control and is used for synchronous motor 14 is connected with electrical network 16 and from the generator circuit breaker 28 of electrical network 16 disconnections.
Measure interface 18 and can comprise other digital input and output 20d and analog input and output 20e, be used for communicating with other measurement and control device.
In the control unit 30 of automatic voltage 12, handle from the measured value of measuring interface 18, control unit 30 calculates the expection output current at output 32 places.Output voltage from output 32 is supplied to synchronous motor 14, and is used for control synchro 14.
For example, output 32 is connected to exciter 34 and rotating diode bridge 36, is used to the armature winding power supply of synchronous motor 14.But, but also direct-drive synchronous motor 14.In this case, output 32 can be directly connected to synchronous motor 14 and exciter 34, and does not need rotating diode bridge 36.
In order to generate the output voltage at output 32 places, automatic voltage regulator 12 comprises rectifier unit 38, capacitor unit 40 and the chopper unit 42 that is connected in series.
Rectifier unit 38 is connected to the input 44 of automatic voltage regulator 12, and input 44 is connected to power network 16 via optional shunting supply convertor 46.Through importing 44, power electronic device supply of current to rectifier unit 38, capacitor unit 40 and chopper unit 42.Like this, automatic voltage regulator 12 is fit to receive via input 44 all common supply types of voltage, for example DC, AC or non-sine input voltage.
The input voltage that rectifier unit 38 receives from input 44, and generate the dc voltage that is supplied to capacitor unit 40.Capacitor unit 40 comprises internal capacitor 48 and the external capacitor 50 that can externally be connected to automatic voltage regulator 12.
The chopper unit 42 that is connected to capacitor unit 40 comprises form electronic (high power) switch 52 and the fly-wheel diode 54 of taking IGBT 52.
In order to control the height of the output current of importing 32 places, adopt 52 pairs of dc voltages of IGBT to carry out pulse-width modulation from capacitor unit.Automatic voltage regulator 12 comprises pwm unit 56, and pwm unit 56 is fit to measure output current via shunt resistor 58, and is fit to control IGBT 52.Pwm unit 56 receives the expection output current from control unit 30, and control unit 30 also is fit to the dc voltage in the DC chain of Measurement of capacitor unit 40.
In short, automatic voltage regulator 12 uses chopper output stage 42 to control output current, the for example exciter electric current at output 32 places.Through over commutation, and energy is stored in the DC chain capacitor 48,50 from input 44 input voltage.This makes automatic voltage regulator 12 for from DC to AC, operating with the input voltage of all kinds of nonsinusoidal waveform.
Automatic voltage regulator 12 comprises the service control panel 50 that is used for for example coming via keyboard and display Artificial Control automatic voltage regulator 12.
Automatic voltage regulator 12 comprises these unit that are used to automatic voltage regulator 12 and the input 62 of assembly power supply.Input 62 is connected to power subsystem 64, and power subsystem 64 can be the dc voltage that is used for supply of electric power with the ac input voltage rectification.
Automatic voltage regulator 12 comprises communication interface 66 or communication unit 66, and control unit 30 can receive data and send data to other device through communication interface 66 or communication unit 66.For example, communication interface 66 can be a field-bus interface 66, and/or can be fit to communicate via ETH, USB, RS-485 and/or CAN.
The design of automatic voltage regulator 12 allows the various application for all kinds input voltage, and the synchronous motor 14 of permission and all kinds is adaptive.Can comprise following functional based on (integrated) measurement interface 18 and the data input and output through (integrated) communication interface 66 by internal control unit 30.
Control unit 30 can provide the regulator modes of all kinds.
Control unit 30 can provide amplitude limiter, is used to make synchronous motor 14 to remain on the safety operation zone, and prevents the damage of synchronous motor 14.
Control unit 30 can provide voltage matches between the line voltage at the electric moter voltage at 24 places and 22 places, so that acceleration synchronization.
Can come remote access control unit 30 via communication interface 66, be used for control and keep watch on automatic voltage regulator 12.
Control unit 30 can be fit to keep watch on rotating diode bridge 36, damages so that monitor exciter machine 34 and prevent.
Control unit 30 can be fit to carry out data communication with the other control unit 30 of the automatic voltage regulator 12 of the other same design of the other synchronous motor 14 of control, makes that the load of the synchronous motor 14 on the power network 16 is synchronous.Like this, can realize based on serial bus communication with the load Sharing of a plurality of parallelly connected unit (each unit comprises synchronous motor 14 and automatic voltage regulator 12) based on the information exchange between these unit.
Control unit 30 can be suitable for interior monitoring, so that detect inside and outside fault.
Control unit 30 can be fit to carry out data communication with the other control unit 30 of the other automatic voltage regulator 12 that is fit to the same synchronous motor 14 of control.Take over control when in this case, automatic voltage regulator 12 can be adapted at detecting internal fault by other automatic voltage regulator 12.Like this, can realize having the dual channel system that a tracking is set through serial bus communication.
Control unit 30 makes electric moter voltage and line voltage synchronous in the time of can being adapted at starting synchronous motor 14.Automatically can realize through the following step synchronously: use the speed control generation control signal of the line voltage at converter 22 places, and adjust the motor output voltage at 24 places then, so that satisfy synchronous condition to synchronous motor 14.For example, the frequency of voltage and phase place should be mated.When reaching synchronous condition, automatic voltage regulator 12 gives generator circuit breaker 28 with close commands.
Control unit 30 can comprise incident and data logger.
Control unit 30 can comprise the IEEE power system stabilizer, PSS.
Control unit 30 can comprise processor, operating software function on it, and this realizes above-mentioned functions property.The integrated software function is not limited to that these are functional, but can expand.That is, control unit 30 can be configurable and programmable control unit 30.Control unit 30 can comprise integrated Control Software.
Control unit 30 also can comprise can be functional by the integrated software that external device (ED) comprises, and for example is rotating diode supervision, power system stabilizer, PSS, function for monitoring or the like usually.
In addition; Automatic voltage regulator 12 can provide has the variable DC electric current of covering power in short-term; Can come the terminal or the electric moter voltage of control synchro 14 according to appropriate accuracy, can guarantee stable operation, synchronous motor 14 is remained on permit within the working range for electrical network 16 and/or other motor 14; Can promote fault transient stability afterwards, and can communicate with facility (power station) control system.
Though in accompanying drawing and above description, specify and described the utility model, this explanation and description are considered to illustrative or exemplary rather than restrictive; The utility model is not limited to the disclosed embodiments.Through research accompanying drawing, disclosure and the accompanying claims book, other change of the disclosed embodiments it will be appreciated by those skilled in the art that and realizes, and implement to require the utility model of protection.In claims, word " comprises " does not get rid of other element or step, and indefinite article " " is not got rid of a plurality of.Some s' described in claims function can be accomplished in single processor or controller or other unit.Only some fact of measuring of statement does not represent that these combinations of measuring can not be used to produce good result in mutually different dependent claims.Any reference number in claims is not to be understood that and is limited field.

Claims (12)

1. automatic voltage regulator (12) that is used for control synchro (14), said automatic voltage regulator (12) comprising:
Rectifier unit (38), being used for the input voltage rectification is dc voltage;
Capacitor unit (40) is connected to said rectifier unit (38) and suitable storage of electrical energy;
Chopper unit (42) is connected to said capacitor unit (40) and is fit to and generates the pulse-width modulation output voltage from said dc voltage, and said output voltage will be supplied to said synchronous motor (14);
Control unit (30) is used to control said chopper unit (42), makes to control said synchronous motor (14) via said pulse-width modulation output voltage.
2. automatic voltage regulator as claimed in claim 1 (12),
Wherein, said chopper unit (42) comprises electronic switch (52) and fly-wheel diode (54).
3. automatic voltage regulator as claimed in claim 2 (12),
Wherein, said electronic switch (52) is IGBT.
4. automatic voltage regulator as claimed in claim 1 (12),
Wherein, said capacitor unit (40) comprises internal capacitor (40) and can be connected to external capacitor (50).
5. automatic voltage regulator as claimed in claim 1 (12) also comprises:
Measure interface (18), said measurement interface (18) is fit to be connected to line voltage converter (22) and is used to measure line voltage, is connected to electric moter voltage converter (24) and is used to measure electric moter voltage and/or is connected to current measurement converter (26) and be used to measure current of electric.
6. automatic voltage regulator as claimed in claim 5 (12),
Wherein, said control unit (30) is adapted at electric moter voltage and line voltage closed generator circuit breaker (28) when synchronous.
7. automatic voltage regulator as claimed in claim 5 (12),
Wherein, said measurement interface (18) is fit to receive numeral input and/or the analog input from external measurement device.
8. automatic voltage regulator as claimed in claim 1 (12) also comprises:
Communication interface (66), said communication interface (66) are used for carrying out data communication with other device.
9. automatic voltage regulator as claimed in claim 7 (12),
Wherein, said control unit (30) is fit to receive control command via said communication interface (66); And/or
Wherein, said control unit (30) is fit to send measurement data via said communication interface.
10. automatic voltage regulator as claimed in claim 7 (12),
Wherein, said control unit (30) is fit to carry out data communication with the other control unit (30) of the other automatic voltage regulator (12) of the other synchronous motor (14) of control, makes that the load of the said synchronous motor (14) on the power network (16) is synchronous.
11. automatic voltage regulator as claimed in claim 7 (12),
Wherein, said control unit (30) is fit to carry out data communication with the other control unit (30) of the other automatic voltage regulator (12) that is fit to the same synchronous motor of control (14),
Wherein, said automatic voltage regulator (12) is adapted at taking over control when detecting internal fault by said other automatic voltage regulator (12).
12. a system (10) comprising:
Synchronous motor (14),
Like each the described automatic voltage regulator (12) in the claim 1 to 11.
CN2011204153277U 2011-10-18 2011-10-18 An automatic voltage regulator and a system equipped with the same Expired - Lifetime CN202435328U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204153277U CN202435328U (en) 2011-10-18 2011-10-18 An automatic voltage regulator and a system equipped with the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204153277U CN202435328U (en) 2011-10-18 2011-10-18 An automatic voltage regulator and a system equipped with the same

Publications (1)

Publication Number Publication Date
CN202435328U true CN202435328U (en) 2012-09-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104426507A (en) * 2013-09-03 2015-03-18 拉碧斯半导体株式会社 Semiconductor Device And Current Amount Control Method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104426507A (en) * 2013-09-03 2015-03-18 拉碧斯半导体株式会社 Semiconductor Device And Current Amount Control Method
CN104426507B (en) * 2013-09-03 2019-04-30 拉碧斯半导体株式会社 Semiconductor device and electric current amount control method

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TR01 Transfer of patent right
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Effective date of registration: 20180612

Address after: Baden, Switzerland

Patentee after: ABB TECHNOLOGY LTD.

Address before: Zurich

Patentee before: ABB T & D Technology Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120912