CN106169861A - Protection circuit for braking resistor - Google Patents

Protection circuit for braking resistor Download PDF

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Publication number
CN106169861A
CN106169861A CN201610329556.4A CN201610329556A CN106169861A CN 106169861 A CN106169861 A CN 106169861A CN 201610329556 A CN201610329556 A CN 201610329556A CN 106169861 A CN106169861 A CN 106169861A
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CN
China
Prior art keywords
circuit
control
braking resistor
voltage
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610329556.4A
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Chinese (zh)
Other versions
CN106169861B (en
Inventor
R·维尔豪尔
J·赖特尔
K·科拉尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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Publication date
Priority to DE102015209038 priority Critical
Priority to DE102015209038.8 priority
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of CN106169861A publication Critical patent/CN106169861A/en
Application granted granted Critical
Publication of CN106169861B publication Critical patent/CN106169861B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40Testing power supplies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04Cutting off the power supply under fault conditions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00Electrodynamic brake systems for vehicles in general
    • B60L7/02Dynamic electric resistor braking
    • B60L7/06Dynamic electric resistor braking for vehicles propelled by ac motors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52Testing for short-circuits, leakage current or ground faults
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58Testing of lines, cables or conductors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00Converter types
    • B60L2210/30AC to DC converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/0083Converters characterised by their input or output configuration
    • H02M1/0085Partially controlled bridges
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

Abstract

The present invention relates to a kind of method for controlling electronic-circuit device, described electronic-circuit device has intermediate DC circuit (22), this intermediate DC circuit (22) is connectable on alternating-current voltage source (1) by commutator (7) at input, and this intermediate DC circuit (22) is arranged in outfan and is connected at least one electric loading (15) by current transformer (14), wherein, the braking resistor (4,5) that at least two can be connected in parallel is there is in described intermediate DC circuit (22).It is a feature of the present invention that, the electric current (I DCL) in described intermediate DC circuit (22) is detected by detector unit (16), and the service behaviour according to the braking resistor (4,5) by being connected in parallel described in control device (2) inspection of the electric current (I DCL) in the described intermediate DC circuit (22) detected.Inventive feature also resides in, detected the electric current (I DCL) in described intermediate DC circuit (22) by detector unit (16), described control device (2) is detected the collector emitter voltage on described chopper transistor (17) and turns off supply voltage when chopper transistor (17) fault by the commutator (7) of switch, especially input.

Description

Protection circuit for braking resistor
Technical field
The present invention relates to a kind of for controlling the method with the electronic-circuit device of intermediate DC circuit, this direct current Voltage intermediate circuit be may be connected on alternating-current voltage source by commutator at input side, and this intermediate DC circuit is arranged Become and be connected at least one load by current transformer at outlet side, wherein, exist at least in this intermediate DC circuit Two braking resistors that can be connected in parallel.
Background technology
This method is applied in the control of electronic-circuit device, in this electronic-circuit device, from the exchange of electrical network The rectified voltage that voltage is converted in intermediate DC circuit by the commutator of input side, in described DC voltage Between control ground by inverter or current transformer again on loop and connect electric loading such as the motor in machine.By current transformer or inverse Become device can manipulate motor electronically and the most correspondingly regulate rotating speed.The most so give intermediate DC circuit true Set pattern lattice or design intermediate DC circuit so that multiple motors or other electric loadings can be connected in this DC voltage Between on loop.The such configuration of motor is driven so that this driving motor is possible not only in drive pattern run in modern machines And can run in generator mode, thus in braking procedure, the electric energy accumulated at this is not converted directly into heat and can First to feed back in intermediate DC circuit.Only when the energy that can not use institute's feedback in intermediate DC circuit During amount, just applying so-called braking resistor, unnecessary electric energy is converted to heat by this braking resistor.This braking resistor the most also by It is referred to as copped wave resistance (Chopperwiderstand).
Known this for controlling to drive the electronic circuit dress of motor by patent application DE 10 2,006 032 476 A1 Put.The control device that disclosed electronic-circuit device equipment is improved there is given based on the present invention.These electronic-circuit devices Relate to realizing intermediate DC circuit, this intermediate DC circuit on the one hand can with combined resistance not only at motor as sending out Absorb electric energy when motor runs and will turn on electric current gauge when connecting intermediate DC circuit to the degree allowed.This electricity Sub-circuit arrangements also provides for advantages below: when the motor connected is as motor running, electrical loss is reduced to minimum degree. In order to ensure reliable running under braking, this electronic-circuit device is except going back in addition to limiting the ohmage of intermediate circuit voltage Having the braking resistor that can be connected in parallel, this braking resistor reduces resistance when running under braking so that can be quickly by bigger Feedback power be converted to heat.
By the known a kind of current transformer with different monitoring function of utility model document DE 20 2,009 018 791 U1, This control function guarantees the service behaviour of this current transformer in wind power installation.Here, arrange control function, such as wind power installation The monitoring of the rotary speed actual value of motor, the monitoring of the overload of the outfan transistor of current transformer, the electrical network powered to current transformer The monitoring of grid phase fault and the monitoring of the intermediate circuit voltage of current transformer.The most also the overload of braking resistor is monitored.
Summary of the invention
The task of the present invention is, proposes for controlling the another kind with the electronic-circuit device of intermediate DC circuit Method, the in the method service behaviour of the important electricity parts in monitoring intermediate DC circuit.
This task is solved by claim 1 according to the present invention.The favourable configuration of the present invention is wanted by appurtenance Ask, specification and drawings obtains.
The method according to the invention is characterised by, is provided with detector unit in intermediate DC circuit, this detection list The electric current of the backflow in unit's detection intermediate DC circuit.Described detector unit can be such as the electricity of inductance type detection electric current Flow measurer.According to the electric current in the intermediate DC circuit detected, control device and can speculate in the middle of DC voltage The service behaviour of the braking resistor being connected in parallel in loop, the electronics in this control device control circuit device in other cases Parts and the most additionally perform control function.Described circuit arrangement especially can be passed through when the startup of electronic-circuit device Control device trigger described method, its mode is, manipulates the braking resistor that is connected in parallel and cutting of attaching troops to a unit the most momently Ripple transistor (Choppertransistor), and controlling device analyzes and processes in intermediate DC circuit now The electric current of flowing.Because the intermediate circuit voltage in intermediate DC circuit is it is known that so described electronic-circuit device is permissible By for calculating the formula R=U/I of resistance to the true resistance calculating in intermediate DC circuit.
It is advantageously provided, in controlling device, stores the all-in resistance of the braking resistor being connected in parallel.Control device according to After the value of the positive voltage drops in braking resistor being connected in parallel and the intermediate circuit current detected calculate true resistance, control The all-in resistance of real braking resistor with all braking resistors being connected in parallel of storage can be compared by device processed now. If there is the most excessive deviation here, then it is assumed that at least one in the braking resistor being connected in parallel is fault 's.
In addition it is advantageously provided, controls device and consider maximum allowable tolerance when comparing simultaneously.Described tolerance is preferred So select so that the resistance variations that this tolerance produces when being less than a fault in the braking resistor being connected in parallel.Application The tolerance allowed guarantees simultaneously: when the positive voltage drops in the braking resistor being connected in parallel significantly is raised and lowered and/or in institute The intermediate circuit current of detection is when being raised and lowered, reliably but early speculate out of order braking resistor.
In addition it is advantageously provided, controls the collector emitter voltage on device detection chopper transistor.To copped wave crystal The described detection of the collector emitter voltage on pipe is carried out during dynamic operation, in order to control the operation shape of chopper transistor State.If such as chopper transistor is fault in dynamic state because of its short circuit or manipulation fault, then can be led to by controlling device Cross the above value of collector emitter voltage detected and the value of intermediate circuit current reliably identifies this fault.This In the case of such as can will by drive motor-driven machine transitions be safe condition, its mode is, turn off machine energy supply Should.
Advantageously, supply voltage is turned off when chopper transistor fault by the commutator of switch, especially input side.? In this case intermediate DC circuit is made to separate with electrical network by shutoff commutator so that not continue to machine supply electricity Stream.Replace the commutator turning off input side, it is also possible to be provided with electromechanical switch or electromagnetic switch, this electromechanical switch or electromagnetism Formula has switched the effect making intermediate DC circuit separate from electrical network.Consider the machine that electricity is run by this way more High safety requirements.
In the another kind of configuration of the present invention arrange, at least one braking resistor being connected in parallel due to interruption fault In the case of, show error notification on the display apparatus.In principle must be at two kinds of fault types in the case of ohmage Between distinguish.When ohmage ruptures and therefore presents the resistance value of infinite height, then this ohmage is probably fault. Further possibility is that: ohmage is shorted and the most no longer has resistance value.In both cases, parallel connection is even The final resistance value of the braking resistor connect all changes so that can reliably identify and distinguish mutually two kinds of mistakes.Described In the case of interruption arranged according to the present invention at this, error notification is displayed in the display device such as screen of machine.With This mode notifies the operator of machine: the braking resistor on the machine of operator is fault.Additionally or alternatively, it is possible to With by this fault on the control computer that remote maintenance system is sent at machine builder by the Internet so that at that In automatically generate service and safeguard bill and at least register this fault.
In the case of at least one braking resistor short circuit, described fault again may be by controlling device combination and detected Chopper transistor on collector emitter voltage detect, and this control device can be for security reasons by opening Close, particularly by input side commutator implement supply voltage shutoff.Additionally or alternatively, here can also be at machine Show on screen: in braking resistor, there is mistake.But the resistance of short circuit is more dangerous, because the most all electricity being arranged in parallel Resistance is all short-circuit and the most no longer there is braking resistor.Therefore in this case preferred that, except display mistake Make machine out of service for the sake of going back safety beyond notice.
Accompanying drawing explanation
Describe in detail below according to accompanying drawing and illustrate the present invention.Accompanying drawing illustrates:
Fig. 1: have the electronic-circuit device of current measurement device in intermediate DC circuit, described electronic circuit fills Put for implementing the method according to the invention.
Detailed description of the invention
Circuit arrangement in the drawings is connected on three phase network 1 with its input side 19.But can also be connected in principle In two-phase alternating current pressure network.Guarantee by being connected on three phase network 1: described circuit arrangement can also be in such as printer Power grade is 100kW and electric energy supplied sufficiently by higher motor.At input side 19 by half control type or full-control type commutator The alternating voltage of three phase network 1 is converted into pulsed dc voltage by electric bridge 7.Rectifier bridge 7 the most uniaxially constructs, the most just It is to say, is only possible to from three phase network 1 to the energy Flow in intermediate DC circuit 22 direction, but can not invert.Otherwise Rectifier bridge 7 must bidirectionally be implemented, but this situation links together with corresponding higher cost.In DC voltage Between loop 22 makes rectified alternating voltage smooth by smooth inductor 8 and filter capacitor 9.Electrical network IGCT (Netzthyristoren) 20 during the charging stage of intermediate circuit capacitor 9,12,13, charging current is guided.In this mistake Journey terminates to turn off electrical network IGCT 20 afterwards.The chopper that is made up of diode 11 and chopper transistor 17 realize be connected to defeated Go out the motor M of side 18 as stalling current can be guided during generator operation through the braking of combination and to start resistance 4.By establishing by cable Close 6 brakings that can make combination and startup resistance 4 and under a kind of on off state, pass through electrical network diode 20 with three phase network 1 even Connect, be connected with brake transistor 17 under another kind of on off state.When connecting intermediate DC circuit 22, the braking of combination It is connected with three phase network 1 by electric switch 6 with starting resistance 4, thus sets up intermediate loop in intermediate DC circuit 22 Voltage UZ.Electrical network diode 20 passes through for only making the positive half-wave of the voltage of three phase network 1.In order to accelerate soft start, it is also possible to All phases L1, L2, L3 of three phase network 1 arrange diode 20.
But, if to realize in the case of as generator operation from outlet side 18 to the energy stream of input side 19 Dynamic, then make the startups of combination and braking resistor 4 separate with three phase network 1 and alternatively be used as braking electricity by switch 6 Resistance.
Additionally, another resistance 5 can be provided with.In the drawings, intermediate loop 22 there also is provided there are two centres The Capacitor banks of tank capacitors 12,13.At outlet side 18, inverter 14 is connected on intermediate circuit capacitor 12,13, institute State the DC voltage of inverter inversion direct current voltage intermediate loop 22 for controlling electric loading 15.Electric loading 15 can be especially Less drives motor, the driving motor of such as printer.Inverters 14 such as can change electric consumption in terms of rotating speed. The control to electric loading 15 is realized by electronic controller 3.There is intermediate loop controller 2 the most in the drawings, it is on the one hand Control chopper transistor 17 and on the other hand control the switch 6 of ohmage 4.Additionally, intermediate loop controller 2 can be borrowed Help the connection that dotted line marks to monitor the braking of combination and start resistance 4 and perform the capacity of intermediate circuit capacitor 12,13 Analyze.Thus intermediate loop controller 2 also has control function.Learn from accompanying drawing, because in the situation as motor running Under need not be guided load current by electronic semiconductor component, so except input rectifier in the case of as motor running Beyond 7, possibility does not causes the extra electric switch of electrical loss.
Negative intermediate circuit current-the I-DCL of the current measurement device 16 detection backflow in intermediate DC circuit 22 And it is in communication is connected with analyzing and processing and intermediate loop controller 2.Analyzing and processing and intermediate loop controller 2 also detect Middle loop voltage+the DC on ohmage 4,5 that can be connected in parallel.When switch 6 is placed in such position so that two resistance 4,5 when being connected in parallel, according to the negative intermediate circuit current-I-DCL detected and the middle loop voltage+DC detected, point Analysis process and intermediate loop controller 2 can calculate the true resistance of two resistance 4,5.Then analyzing and processing and intermediate loop control The all-in resistance of the true resistance so calculated with two resistance 4,5 of storage is compared by device 2 processed.If at the total electricity stored Deviation between resistance and the true resistance calculated is excessive, then there is fault, and analyzing and processing and intermediate loop controller 2 close Disconnected rectifier bridge 7, in order to make intermediate DC circuit 22 separate from electrical network 1.Alternatively or additionally, analyzing and processing and in Between the most unshowned machine of loop control unit 2 display device 21 on export corresponding error notification or warning notice.With This mode, notifies the fault of one of resistance 4,5 to the operator of machine.
Additionally, analyzing and processing and intermediate loop controller 2 also detect the collector emitter on chopper transistor 17 Voltage, in order to can be in the service behaviour of machine run duration inspection chopper transistor 17.When such as chopper transistor 17 occurs During fault (durchlegiert), the most described chopper transistor represent on circuit engineering short circuit, and with chopper transistor 17 Manipulation independently, intermediate circuit current-I-DCL no longer changes, because chopper transistor 17 cannot be implemented when short circuit again Switching process.The most in this case, even if changing manipulation and can not being changed by analyzing and processing and intermediate loop controller 2 again Become negative intermediate circuit current-I-DCL, thus thus it is inferred that chopper transistor 17 is substantially fault in Opposite direction connection. The analyzed process of this fault and intermediate loop controller 2 show on display device 21.Additionally or alternatively, also may be used at this For security reasons to make intermediate DC circuit 22 separate from three phase network 1 by rectifier bridge 7, thus more safely Close the machine with electric loading 15.
Reference numerals list
1 three phase network
2 analyzing and processing and intermediate loop controllers
3 controllers
The braking of 4 combinations and startup resistance
5 resistance
6 switches
7 rectifier bridges
8 smooth inductors
9 filter capacitors
10,11 diode
12,13 intermediate circuit capacitor
14 inverters
15 electric loadings
Current measurement device in 16 intermediate DC circuit
17 chopper transistors
18 outlet sides
19 input sides
20 electrical network IGCTs
21 display devices
22 intermediate DC circuit
L1, L2, the phase of L3 three-phase alternating current
+ DC middle loop voltage
-DC bears intermediate circuit voltage
-I-DCL bears intermediate circuit current
UZIntermediate circuit voltage

Claims (10)

1., for the method controlling electronic-circuit device, described electronic-circuit device has intermediate DC circuit (22), this intermediate DC circuit (22) is connectable on alternating-current voltage source (1) by commutator (7) at input side, and And this intermediate DC circuit (22) is arranged in outlet side and is connected at least one electric loading (15) by current transformer (14) On, wherein, described intermediate DC circuit (22) exists the braking resistor (4,5) that at least two can be connected in parallel,
It is characterized in that, detect the electric current (-I-DCL) in described intermediate DC circuit (22) by detector unit (16), And according to the electric current (-I-DCL) in the described intermediate DC circuit (22) detected by controlling device (2) inspection institute State the service behaviour of the braking resistor (4,5) being connected in parallel.
Method the most according to claim 1, it is characterised in that pass through circuit arrangement when starting described electronic-circuit device Described control device (2) manipulate described braking resistor (4,5) and the chopper transistor (17) attached troops to a unit the most momently, and by Described control device (2) analyzes and processes the electric current (-I-DCL) now flowed in described intermediate DC circuit (22).
3. according to the method described in any one of the preceding claims, it is characterised in that described in be connected in parallel braking resistor (4, 5) all-in resistance is stored in described control device (2).
4. according to the method described in any one of the preceding claims, it is characterised in that described control device (2) according to described also Value and the intermediate circuit current (-I-DCL) detected of the positive voltage drops (+DC) in braking resistor (4,5) that connection connects calculate True resistance, and the all-in resistance of described true resistance with all braking resistors (4,5) being connected in parallel stored is carried out Relatively.
Method the most according to claim 4, it is characterised in that described control device (2) considered when described comparison simultaneously Maximum positive tolerance.
6. according to the method described in any one of the preceding claims, it is characterised in that cut described in the detection of described control device (2) Collector emitter voltage on ripple transistor (17).
Method the most according to claim 6, it is characterised in that when chopper transistor (17) fault, by switching, especially It is that the commutator (7) of input side turns off described supply voltage.
8. according to the method described in any one of the preceding claims, it is characterised in that at least one resistance being connected in parallel (4,5) during fault, show error notification due to interruption in display device (21).
9. according to the method described in any one of the preceding claims, it is characterised in that short at least one braking resistor (4,5) Lu Shi, combines the collector emitter voltage on the described chopper transistor (17) detected by described control device (2) and comes Detect this fault, and described control device (2) implements described power supply by switch, the especially commutator (7) of input side The shutoff of voltage, and/or implement the wrong display on display device (21).
10., for the method controlling electronic-circuit device, described electronic-circuit device has intermediate DC circuit (22), this intermediate DC circuit (22) is connectable on alternating-current voltage source (1) by commutator (7) at input side, and And this intermediate DC circuit (22) is arranged in outlet side and is connected at least one electric loading (15) by current transformer (14) On, wherein, described intermediate DC circuit (22) exists the braking resistor (4,5) that at least two can be connected in parallel,
It is characterized in that, detect the electric current (-I-DCL) in described intermediate DC circuit (22) by detector unit (16), Described control device (2) detects the collector emitter voltage on described chopper transistor (17), and at chopper transistor (17) supply voltage is turned off by the commutator (7) of switch, especially input side during fault.
CN201610329556.4A 2015-05-18 2016-05-18 Protection circuit for brake resistor Active CN106169861B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102015209038 2015-05-18
DE102015209038.8 2015-05-18

Publications (2)

Publication Number Publication Date
CN106169861A true CN106169861A (en) 2016-11-30
CN106169861B CN106169861B (en) 2021-09-14

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CN202634264U (en) * 2012-06-28 2012-12-26 深圳市汇川技术股份有限公司 Frequency converter brake unit protection circuit
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CN109842096A (en) * 2017-11-28 2019-06-04 Keb自动化两合公司 Electronic protection circuit
CN109842096B (en) * 2017-11-28 2021-06-29 Keb自动化两合公司 Electronic protection circuit

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