CN101867336A - Driving controller of electric eddy current brake and control method thereof - Google Patents
Driving controller of electric eddy current brake and control method thereof Download PDFInfo
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- CN101867336A CN101867336A CN201010195447A CN201010195447A CN101867336A CN 101867336 A CN101867336 A CN 101867336A CN 201010195447 A CN201010195447 A CN 201010195447A CN 201010195447 A CN201010195447 A CN 201010195447A CN 101867336 A CN101867336 A CN 101867336A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention relates to a driving controller of an electric eddy current brake and a control method thereof, wherein the controller comprises a control unit, a driving circuit and an insulated gate bipolar transistor IGBT with large current and high pressure resistance electrically connected in sequence, and a rectification unit, a transformer T1 and a power input thereof connected with an IGBT output grid electrode in sequence. The control method comprises the steps that the control unit controls the pulse width thereof according to the input gear to modulate the duty ratio of the PWM output under the condition of normal circuit detection, or else turns off the output or restricts the duty ratio of the PWM output; the driving circuit receives the PWM output and drives the IGBT output according to the PWM output. The driving controller of the electric eddy current brake and the control method thereof has the high pressure resistance of 300V, and basically avoids the over-voltage failure used on cars, the controller can not be failed under various abnormal conditions combining a detection and protection circuit, thereby greatly enhancing the reliability, and solving the industrial problem of poor reliability of electronic control mode in the electric eddy current brake industry.
Description
Technical field
The present invention relates to automobile brake equipment, be specifically related to a kind of driving controller of electric eddy current brake and control method thereof.
Background technology
Chinese invention patent " driving controller of electric eddy current brake and control method thereof ", the patent No. 200510034403.9, a kind of driving controller of electric eddy current brake is disclosed, with other traditional driving controller of electric eddy current brake, employing possesses the Intelligent Power Module (BTS550P) of various auxiliary circuits as power device, have only 40V but it is withstand voltage, as easy as rolling off a log inefficacy is the high basic reason of failure rate.
Summary of the invention
The technical issues that need to address of the present invention are, how a kind of driving controller of electric eddy current brake and control method thereof are provided, can more stable, effective work.
First technical problem of the present invention solves like this: make up a kind of driving controller of electric eddy current brake, comprise that control unit and connection thereof are used to drive the driver element of current vortex retarder, described driver element comprises high voltage bearing insulated gate bipolar transistor IGBT of big electric current and the drive circuit thereof that drives the described current vortex retarder of connection; Described insulated gate bipolar transistor IGBT output grid connects rectification unit, transformer T1 and the power supply input thereof of the output voltage that is used to superpose successively.
According to driving governor provided by the invention, also comprise the Overvoltage protecting unit that is connected with accessory power supply in the described driving governor.
According to driving governor provided by the invention, comprise that also an end connects the overcurrent sensing circuit that described driver element, the other end connect described control unit.
According to driving governor provided by the invention, described overcurrent sensing circuit comprises between the corresponding sampling resistor Rsenser that is used for current sample that connects two ends of current monitor U1, current monitor U1 two inputs, current monitor U1 output and the ground GND, the first divider resistance R9 and voltage stabilizing didoe Z1 in parallel, and the second divider resistance R5 between current monitor U1 output and the described control unit.
According to driving governor provided by the invention, described sampling resistor Rsenser is arranged on the output grid or another grid of described driving governor insulated gate bipolar transistor IGBT.
According to driving governor provided by the invention, comprise that also an end connects the short-circuit detecting circuit that described driver element output, the other end connect described control unit.
According to driving governor provided by the invention, also comprise the temperature sensing circuit that is used to detect described insulated gate bipolar transistor working temperature.
According to driving governor provided by the invention, it is single-chip microcomputer, digital processing unit or programmable processor that described control unit includes, but are not limited to.
Another technical problem of the present invention solves like this: make up a kind of current vortex retarder drive controlling method, the drive circuit that adopts the high voltage bearing insulated gate bipolar transistor IGBT of big electric current and be connected with control unit may further comprise the steps:
Described control unit receives or reads the user and import gear;
Described control unit detects under the normal condition at overcurrent sensing circuit, short-circuit detecting circuit and the temperature sensing circuit of described insulated gate bipolar transistor IGBT, controls the duty ratio of its pulse width modulation (PWM) output according to described gear;
Described drive circuit receives and drives described insulated gate bipolar transistor IGBT output according to described pulse width modulation (PWM) output.
According to drive controlling method provided by the invention, comprise that also described control unit detects the duty ratio that unusual its described drive circuit that is connected of control cuts out described insulated gate bipolar transistor IGBT output or limits the pulse width modulation output of described gear correspondence according to described overcurrent sensing circuit, short-circuit detecting circuit and temperature sensing circuit.
According to drive controlling method provided by the invention, comprise that also described control unit is according to dragging the signal of stopping to import or not having the rate signal input not receive or read the user and import gear.
Driving controller of electric eddy current brake provided by the invention and control method thereof have the following advantages than prior art:
1, can withstand voltage 300V, can stop substantially on automobile, to use and overvoltage takes place lose efficacy.2, can accurately detect electric current, can realize that by control method overcurrent protection and overcurrent reduce electric current output automatically, can prevent effectively that the current vortex retarder stator coil can not lose efficacy in abnormal conditions such as turn-to-turn short circuits.3, possess short-circuit detecting and fast short-circuit protective function, when the output short circuit, can publish books, can prevent effectively that short circuit from causing inefficacy in the very short time internal cutting off.4, possess temperature protection function, reduce output current when detecting the power device overtemperature, limit temperature rises.5, the controller of current vortex retarder that possesses above function can lose efficacy at any controller self that unusually can not make, and had greatly improved reliability, had solved the not high industry difficult problem of current vortex retarder industry electronic control mode reliability.
Description of drawings
Further the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is a driving controller of electric eddy current brake theory diagram of the present invention;
Fig. 2 be shown in control flow schematic diagram in the controller;
Fig. 3 be shown in the circuit theory schematic diagram of difference and conventional differentiation part in the controller.
Embodiment
The present invention will be described in conjunction with the specific embodiment of the invention:
As Fig. 1; shown in 3; driving controller of electric eddy current brake of the present invention comprises single-chip microcomputer, power device, power device drive circuit and each auxiliary circuit; comprise: the direct current DC power supply 4 of the isolation in the Overvoltage protecting unit 1 of accessory power supply, temperature detecting unit 2, short-circuit detecting unit 3 and the drive circuit; I end, PWM end, PB1 end connect the corresponding port of described single-chip microcomputer among Fig. 3; the LOAD end connects load, and the BAT end connects automobile current generator and battery.
Compare with the traditional electrical eddy current retarder, innovative point of the present invention is:
㈠ IGBT and drive circuit thereof
Technical problem 1: vehicle-mounted high-current equipment is for fail safe, one end is direct bonding, so the other end need provide positive electricity to drive, so power device must be connected (hot end) with positive source, by the gate driver circuit driving power device output positive electricity of power device.This mode is called for short the high-end gate driving of power device.This high-end gate driving requires the driving voltage specific output voltage high 10 ~ 15V of supply voltage just, so must solve the difficult problem of gate drive voltage greater than supply power voltage.
Present settling mode has two kinds:
1, at peripheral boostrap circuit or the charge pump circuit of increasing of chip for driving IR2127.This method only is applicable to the operating frequency condition with higher, is higher than supply voltage by the realization gate drive voltage short time that discharges and recharges to electric capacity under the effect of frequency period signal.And retarder needs stable open or open-minded with lower frequency (in the 100hz), so this mode is inapplicable;
2, at the peripheral floating power supply of isolating that increases of chip for driving IR2127, this supply voltage supply voltage that is added to realizes that grid voltage is higher than supply voltage during work.The DC-DC module that this mode need be isolated realizes.But the DC-DC module of automobile rank (125 ℃ of heatproofs) can not find substantially at present, perhaps costs an arm and a leg, up to hundreds of unit.
Solution of the present invention: with the DC power supply that transformer T1 and peripheral discrete devices realization thereof are isolated, the chip for driving that is added to again IR2127(chip U2), realize the purpose of gate drive voltage greater than supply voltage.Because used discrete devices such as the most basic transformer and other resistance, electric capacity, triode, as long as these devices reach the automobile rank.Improved the reliability of this partial circuit so greatly, simultaneously its cost also very low (in 10 yuan).This scheme just becomes the scheme that the retarder power device drives the optimum of usefulness like this.
Technical problem 2: the power device of electronic type current vortex retarder generally all adopts field effect transistor MOSFET or intelligent MOSFET, the characteristics of this device are because MOSFET internal structure limitation, the impossible withstand voltage height that operating current is big, and withstand voltage high impossible operating current is big.And at present this class power device of adopting of the electronic type controlling party of current vortex retarder generally all preferentially selects operating current to meet the demands, but it does not withstand voltagely generally wait from 40V ~ 200V.And require the withstand voltage 200V that is higher than at vehicle live subset immunity standard, so just be difficult to realize.And see it also is so from actual operating position, the inefficacy of driving controller of electric eddy current brake more than 90% all is because overvoltage causes power device to puncture.
So innovation of the present invention is commonly used with the power electronics industry, the high voltage bearing greatly again power device IGBT of operating current is applied to driving controller of electric eddy current brake.Select withstand voltage 300V, the IGBT device of electric current 400A.
The Overvoltage protecting unit 1 of ㈡ accessory power supply
Because the power device that driving governor originally adopts is withstand voltage not high, short circuit has been covered thereby high voltage has directly punctured power device or indirect protection accessory power supply.After having adopted the power device of withstand voltage 300V, though power device self can be by over-voltage breakdown, this overvoltage can be applied on the driving governor accessory power supply.
So the objective of the invention is increases Overvoltage protecting unit 1 before accessory power supply, solve the over-voltage breakdown problem of accessory power supply.Physical circuit is made up of triode Q1 and Q2, resistance R 1, R2, R3 and R4 and Transient Suppression Diode (TVS pipe) TV1.
Operation principle is: after voltage surpasses certain value between supply voltage and the ground GND; TVS pipe TV1 puncture drags down PNP triode Q2 base voltage, and the Q2 conducting makes P-MOSFET source electrode and grid voltage less than turning-on voltage; P-MOSFET ends, and reaches the purpose of protection accessory power supply.
The ㈢ overcurrent sensing circuit
When turn-to-turn short circuit occurring, can produce overcurrent at the current vortex retarder stator coil, can cause the power device overcurrent to puncture.The present invention increases overcurrent sensing circuit, signal is input to the single-chip processor i/o mouth again and is used to do overcurrent protection usefulness.
Physical circuit is made up of current sampling resistor Rsenser, voltage stabilizing didoe Z1, chip U1, resistance R 5, R6 and R9.Operation principle is: chip U1 is not for needing the current monitor of power supply in addition, be converted to current signal after extracting voltage signal from current sampling resistor Rsenser two ends, be converted to voltage signal through R5 and R9 dividing potential drop, by the I/O mouth that is input to single-chip microcomputer after the Z1 voltage stabilizing through R5 with respect to GND.
Technological difficulties are that current sampling resistor is to be connected the higher common-mode voltage of having of positive source, and common-mode voltage is greater than 200V when overvoltage occurring, if can only solve common-mode voltage problem under the normal condition with traditional rail-to-rail amplifier, still can be breakdown when overvoltage occurring.
Solution of the present invention is: utilize a kind of floating ground, do not need the extra current monitor IC(chip U1 that powers), the sampling voltage signal that common-mode voltage will be arranged, be converted to current signal, through be converted to voltage signal (0 ~ 5V) through R5 and R9 dividing potential drop with respect to GND.So only need according to size of current select rational R5 and R9 make IN+ (IN-) end of U1 hold with OUT between voltage difference be no more than 20V, can be not breakdown in the time of can realizing overvoltage.
㈣ short-circuit detecting unit 3
IGBT self does not possess short-circuit protection function, must design short-circuit detecting and defencive function in addition when the output short circuit.
Physical circuit by: resistance R 14, R15 and R18, voltage stabilizing didoe Z2 and capacitor C 3 are formed; when operation principle was output (LOAD) short circuit, voltage was equated with GND that by clamp then sample is by resistance R 14, R15 and R18 sampling; the Z2 voltage-stabilizing protection is input to the single-chip processor i/o mouth after the C3 filtering.After single-chip processor i/o mouth output signal drove IGBT work, time-delay 5uS detected whether short circuit (low spot product) is arranged, if short circuit then single-chip microcomputer stop to export.
㈤ temperature detecting unit 2
For preventing that IGBT from crossing thermal breakdown, designed temperature detecting unit 2.
Physical circuit is made up of thermistor Rt, resistance R 7 and R8 and capacitor C 1.Operation principle: Rt is the NPC thermistor, is installed on the IGBT shell, and when temperature raise, Rt reduced.5V voltage Rt and R7 dividing potential drop after C1 and R8 filtering, are input to single-chip microcomputer IO mouth, when detecting voltage less than certain value, think overtemperature.
As shown in Figure 2, the built-in control program of single-chip microcomputer in this controller specifically comprises:
201) judge whether to drag stop and rate signal invalid, do not enter next step;
202) the drive controlling ready lamp is bright;
203) receive the input gear signal;
204) whether effective receive and judge the whether short circuit of anti-lock braking system ABS signal or short-circuit detecting circuit, be to return step 201), do not enter next step;
205) receive and according to the overcurrent sensing circuit of described insulated gate bipolar transistor IGBT and the pulse width modulation (PWM) output duty cycle of temperature sensing circuit testing result restriction input gear correspondence, and control its output;
206) the drive controlling indicator light is bright, the control brake lamp is bright.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (10)
1. driving controller of electric eddy current brake, comprise that control unit and connection thereof are used to drive the driver element of current vortex retarder, it is characterized in that described driver element comprises high voltage bearing insulated gate bipolar transistor of big electric current and the drive circuit thereof that drives the described current vortex retarder of connection; Described insulated gate bipolar transistor output grid connects rectification unit, transformer and the power supply input thereof of the output voltage that is used to superpose successively.
2. according to the described driving governor of claim 1, it is characterized in that, also comprise the Overvoltage protecting unit (1) that is connected with accessory power supply in the described driving governor.
3. according to the described driving governor of claim 1, it is characterized in that, comprise that also an end connects the overcurrent sensing circuit that described driver element, the other end connect described control unit.
4. according to the described driving governor of claim 3, it is characterized in that, described overcurrent sensing circuit comprises between the corresponding sampling resistor that is used for current sample that connects two ends of voltage comparator, voltage comparator two inputs, voltage comparator output and the ground, first divider resistance and voltage stabilizing didoe in parallel, and second divider resistance between voltage comparator output and the described control unit.
5. according to the described driving governor of claim 1, it is characterized in that, comprise that also an end connects the short-circuit detecting circuit (3) that described driver element output, the other end connect described control unit.
6. according to the described driving governor of claim 1, it is characterized in that, also comprise the temperature sensing circuit (2) that is used to detect described insulated gate bipolar transistor working temperature.
7. according to the described driving governor of claim 1, it is characterized in that described control unit is single-chip microcomputer, digital processing unit or programmable processor.
8. a current vortex retarder drive controlling method is characterized in that, the drive circuit that adopts the high voltage bearing insulated gate bipolar transistor of big electric current and be connected with control unit may further comprise the steps:
Described control unit receives or reads the user and import gear;
Described control unit detects under the normal condition at overcurrent sensing circuit, short-circuit detecting circuit (3) and the temperature sensing circuit (2) of described insulated gate bipolar transistor, controls the duty ratio of its pulse width modulation output according to described gear;
Described drive circuit receives and drives described insulated gate bipolar transistor output according to described pulse width modulation output.
9. described according to Claim 8 drive controlling method, it is characterized in that, comprise that also it is connected the duty ratio that described drive circuit cuts out described insulated gate bipolar transistor output or limits the pulse width modulation output of described gear correspondence to described control unit according to described overcurrent sensing circuit, short-circuit detecting circuit (3) and the unusual control of temperature sensing circuit (2) detection.
10. described according to Claim 8 drive controlling method is characterized in that, comprises that also described control unit is according to dragging the signal of stopping to import or not having the rate signal input not receive or read the user and import gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010195447A CN101867336A (en) | 2010-06-09 | 2010-06-09 | Driving controller of electric eddy current brake and control method thereof |
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| CN201010195447A CN101867336A (en) | 2010-06-09 | 2010-06-09 | Driving controller of electric eddy current brake and control method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009243A (en) * | 2010-10-27 | 2011-04-13 | 华东交通大学 | Fixed-heating-quantity electric iron device and control method |
| CN102570955A (en) * | 2011-12-29 | 2012-07-11 | 万向钱潮股份有限公司 | Current drive control device for electromagnetic coils |
| CN103427605A (en) * | 2012-05-17 | 2013-12-04 | 广东高标电子科技有限公司 | Power switch device monitoring and driving circuit, multi-leg controller and electromobile |
| CN105291859A (en) * | 2015-11-23 | 2016-02-03 | 成都科瑞信科技有限责任公司 | Eddy current retarder control system based on voltage reduction constant current source |
| CN105383313A (en) * | 2015-11-23 | 2016-03-09 | 成都科瑞信科技有限责任公司 | Eddy current retarder control system based on pulse bias amplification and wave filtering processing |
| CN105480099A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Voltage-reduction constant-current type eddy current retarder control system based on pulsing bias amplification |
| CN106904081A (en) * | 2017-04-11 | 2017-06-30 | 乐清市铭图电气科技有限公司 | Controller of current vortex retarder and its control method |
| CN107344501A (en) * | 2017-06-12 | 2017-11-14 | 深圳市特尔佳科技股份有限公司 | Electronic type driving controller of electric eddy current brake and its control method |
| CN112104346A (en) * | 2020-08-31 | 2020-12-18 | 电子科技大学 | IGBT high-voltage drive overcurrent and overvoltage protection circuit |
| CN113937976A (en) * | 2021-11-01 | 2022-01-14 | 安阳工学院 | Hybrid excitation liquid cooling self-excitation type eddy current retarder and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06327300A (en) * | 1993-05-14 | 1994-11-25 | Sawafuji Electric Co Ltd | Protective device for exciting coil type retarder |
| CN2641921Y (en) * | 2003-08-08 | 2004-09-15 | 上海盛勤汽车技术有限公司 | Continuous brake force adjustable control circuit of electric eddy buffer |
| CN1700581A (en) * | 2005-04-28 | 2005-11-23 | 深圳市特尔佳运输科技有限公司 | Electromagnetic retarder driving controller and control method thereof |
| CN200954785Y (en) * | 2006-10-19 | 2007-10-03 | 万向电动汽车有限公司 | Series-connection type electric vortex speed buffering device |
| CN101239589A (en) * | 2008-03-10 | 2008-08-13 | 江苏大学 | Electric eddy speed damper and vehicle friction brake combined controller and control method |
| CN101717818A (en) * | 2009-08-14 | 2010-06-02 | 华中科技大学 | Method for screening microbe producing polyunsaturated fatty acid |
-
2010
- 2010-06-09 CN CN201010195447A patent/CN101867336A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06327300A (en) * | 1993-05-14 | 1994-11-25 | Sawafuji Electric Co Ltd | Protective device for exciting coil type retarder |
| CN2641921Y (en) * | 2003-08-08 | 2004-09-15 | 上海盛勤汽车技术有限公司 | Continuous brake force adjustable control circuit of electric eddy buffer |
| CN1700581A (en) * | 2005-04-28 | 2005-11-23 | 深圳市特尔佳运输科技有限公司 | Electromagnetic retarder driving controller and control method thereof |
| CN200954785Y (en) * | 2006-10-19 | 2007-10-03 | 万向电动汽车有限公司 | Series-connection type electric vortex speed buffering device |
| CN101239589A (en) * | 2008-03-10 | 2008-08-13 | 江苏大学 | Electric eddy speed damper and vehicle friction brake combined controller and control method |
| CN101717818A (en) * | 2009-08-14 | 2010-06-02 | 华中科技大学 | Method for screening microbe producing polyunsaturated fatty acid |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009243A (en) * | 2010-10-27 | 2011-04-13 | 华东交通大学 | Fixed-heating-quantity electric iron device and control method |
| CN102009243B (en) * | 2010-10-27 | 2012-09-19 | 华东交通大学 | Fixed-heating-quantity electric iron device and control method |
| CN102570955A (en) * | 2011-12-29 | 2012-07-11 | 万向钱潮股份有限公司 | Current drive control device for electromagnetic coils |
| CN103427605A (en) * | 2012-05-17 | 2013-12-04 | 广东高标电子科技有限公司 | Power switch device monitoring and driving circuit, multi-leg controller and electromobile |
| CN103427605B (en) * | 2012-05-17 | 2015-11-25 | 广东高标电子科技有限公司 | A kind of device for power switching monitoring drive circuit, many brachium pontis controller and electric motor car |
| CN105383313A (en) * | 2015-11-23 | 2016-03-09 | 成都科瑞信科技有限责任公司 | Eddy current retarder control system based on pulse bias amplification and wave filtering processing |
| CN105291859A (en) * | 2015-11-23 | 2016-02-03 | 成都科瑞信科技有限责任公司 | Eddy current retarder control system based on voltage reduction constant current source |
| CN105480099A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Voltage-reduction constant-current type eddy current retarder control system based on pulsing bias amplification |
| CN106904081A (en) * | 2017-04-11 | 2017-06-30 | 乐清市铭图电气科技有限公司 | Controller of current vortex retarder and its control method |
| CN107344501A (en) * | 2017-06-12 | 2017-11-14 | 深圳市特尔佳科技股份有限公司 | Electronic type driving controller of electric eddy current brake and its control method |
| CN107344501B (en) * | 2017-06-12 | 2023-06-02 | 深圳市大为创新科技股份有限公司 | Electronic type eddy current retarder driving controller and control method thereof |
| CN112104346A (en) * | 2020-08-31 | 2020-12-18 | 电子科技大学 | IGBT high-voltage drive overcurrent and overvoltage protection circuit |
| CN112104346B (en) * | 2020-08-31 | 2021-08-06 | 电子科技大学 | IGBT high-voltage drive overcurrent and overvoltage protection circuit |
| CN113937976A (en) * | 2021-11-01 | 2022-01-14 | 安阳工学院 | Hybrid excitation liquid cooling self-excitation type eddy current retarder and control method |
| CN113937976B (en) * | 2021-11-01 | 2023-07-21 | 安阳工学院 | Mixed excitation liquid cooling self-excitation type eddy current retarder and control method |
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Open date: 20101020 |