CN101741230A - High-power brake unit - Google Patents
High-power brake unit Download PDFInfo
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- CN101741230A CN101741230A CN200910261551A CN200910261551A CN101741230A CN 101741230 A CN101741230 A CN 101741230A CN 200910261551 A CN200910261551 A CN 200910261551A CN 200910261551 A CN200910261551 A CN 200910261551A CN 101741230 A CN101741230 A CN 101741230A
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Abstract
The invention discloses a high-power brake unit, which is formed by controlling and connecting the control system U of a high-power control unit with the special insulating gate bipolar transistor IGBT of the high-power brake unit in a direct current chopper circuit. The line of the direct current bus of the control system in the control system U of the high-power control unit is connected with at least two synchronous triggering devices which are connected in parallel, and each synchronous triggering device is connected with one insulated gate bipolar transistor IGBT through a conducting wire. The invention uses forced air cooling and has the obvious advantages of reasonable design, small volume, low noise, high precision, low cost, high efficiency, stable operation and high reliability.
Description
Technical field
The invention belongs to automatic control technology and electric and electronic technical field, relate to a kind of Drive and Control Circuit, realize synchronous triggering during particularly a kind of high-power brake unit parallel operation based on the IGBT device.
Background technology
High-power brake unit is one of equipment of large-scale drive system dynamic braking most critical, and its quality quality will directly influence the safety and the overall performance of whole system.Such as in the oil-well rig system; drill bit is in thousands of meters rock stratum work down in depth; because geological condition is unusual complicated and uncontrollable; the rig electric-control system will constantly provide the high-efficiency reliable electric power for drill bit; and the vital task that the unnecessary energy that brake unit produces when just bearing the regenerative braking of rig electric-control system is released in mode that can burn-off; the success or failure of the safety and even the whole engineering of drilling system are entirely descended in protection constantly, have a great responsibility.
At present, domestic and international high-power brake unit is mainly based on Siemens: entrusting the third party is its manufacturing, international major company products such as ABB, Vacon, its price height, delivery cycle length and after-sale service are difficult to guarantee that this has brought very big inconvenience to the domestic user.Domestic also have company to release brake unit about small-power 300kW, but because can't enter the occasion of high-power applications, so also be difficult to the product competition of international major company and contend with.Actual occasion in high-power applications often needs many brake units to unite use, to satisfy the needs of brake torque and braking power.The product that comprises international major company that analysis-by-synthesis is known is because the difference of its brake voltage threshold value and the dispersiveness of circuit parameter when the use in parallel of many brake units, all can't realize dropping into synchronously and synchronous triggering.Over-burden for this brake unit that will cause elder generation to drop into, even overload, if follow-up brake unit can not in time drop into, the possibility of the brake unit damage that then drops into earlier is very big, and engineering practice has also proved this point.Therefore, market in urgent need can realize the brake unit of synchronous input and synchronous triggering when many in parallel uses.
Summary of the invention
The purpose of this invention is to provide when a kind of high-power brake unit is in parallel to be used and to realize dropping into synchronously and synchronous triggering, make the balanced high-power brake unit of braking power of each brake unit of parallel operation.
For solving above-mentioned technical problem, the present invention adopts following technical scheme: a kind of high-power brake unit, insulated gate bipolar transistor IGBT by high-power brake unit special use in the control system U control connection DC chopper circuit of high-power control unit is formed, be connected with at least two synchronous triggering devices that are connected in parallel on the circuit of the control system dc bus in the control system U of described high-power control unit, described each synchronous triggering device is connected with an insulated gate bipolar transistor IGBT by lead.
Also be provided with the fault reset switch S of regulating and controlling synchronous triggering device on described this control system U
1, discharge threshold diverter switch S
2, carry operating switch S entirely
3, the working mode change switch S
4, duty ratio adjuster PD.
The common DC bus of described control system U is electrically connected at least two voltage detection units, the other end of described each voltage detection unit all is connected with and connects a pulse generation unit, described each pulse generation unit all is parallel with at least two synchronous triggering devices, a described synchronous triggering device is by pulse generation unit of the corresponding connection of lead, other remaining synchronous triggering devices are connected in parallel on this pulse generation unit by optical fiber, be all to be parallel with all synchronous triggering devices on described each pulse generation unit, insulated gate bipolar transistor IGBT has all connected one to one on described each synchronous triggering device.
The output pulse Vin of described synchronous triggering device received pulse generating unit, output pulse Vin by resistance R 1 be electrically connected as self or No. 2 end input signals of gate logic U2, export pulse Vin simultaneously and amplify directly driving three road optical fiber transmitting apparatus A11 by triode V1, A12, A13 work, be provided with optical fiber delivery header U1 among the optical fiber transmitting apparatus A11, be connected with current-limiting resistance R4 on the optical fiber delivery header, R5, prevent that optical fiber delivery header U1 from being burnt because of overcurrent, the optical fiber of optical fiber accepting device B11 is accepted the optical fiber of a U3 and is accepted 1 of a power supply, be provided with surging between No. 2 terminals and absorb capacitor C 1, effect is to prevent that burning optical fiber because of the sudden change of power supply accepts head, optical fiber is accepted the output resistance R2 of head, the one end links to each other with No. 3 ends that optical fiber is accepted a U3, an other end links to each other with the working power VCC of control system, when an optical fiber acceptance U3 receives high level signal, this moment, No. 3 ends were output as high level signal by resistance R 2, when an optical fiber acceptance U3 receives low level signal, its No. 3 end is output as low level signal, the input signal of No. 3 end output signals conduct of a final optical fiber acceptance U3 or No. 3 ends of gate logic U2, optical fiber accepting device B11, B12, the B13 circuit theory is the same, in like manner the output signal of B12 is as the input signal of No. 4 ends of gate logic U2, the input signal of the output signal conduct of optical fiber accepting device B13 or No. 5 ends of gate logic U2, or gate logic U2 is four or two import or gate logics, or No. 1 of gate logic U2 end is output in the same way, the output signal Vout of output resistance R3 by No. 1 end goes to drive the safe and reliable work of insulated gate bipolar transistor IGBT as the driving pulse of insulated gate bipolar transistor IGBT.
Optical fiber transmitting apparatus A11 among the synchronous triggering device U13 gives optical fiber accepting device B11 among the synchronous triggering device U23 by optical fiber transmission signal; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B11 among the synchronous triggering device U33 by optical fiber transmission signal; Optical fiber transmitting apparatus A13 gives optical fiber accepting device B11 among the synchronous triggering device U43 by optical fiber transmission signal.Optical fiber transmitting apparatus A11 among the synchronous triggering device U23 gives optical fiber accepting device B11 among the synchronous triggering device U13 by optical fiber transmission signal; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B12 among the synchronous triggering device U33 by optical fiber transmission signal; Optical fiber transmitting apparatus A13 gives optical fiber accepting device B12 among the synchronous triggering device U43 by optical fiber transmission signal.The optical fiber transmitting apparatus A11 of U33 gives optical fiber accepting device B12 among the synchronous triggering device U13 by optical fiber transmission signal in the synchronous triggering device; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B12 among the synchronous triggering device U23 by optical fiber transmission signal; , optical fiber transmitting apparatus A13 gives optical fiber accepting device B13 among the synchronous triggering device U43 by optical fiber transmission signal.The optical fiber transmitting apparatus A11 of U43 gives optical fiber accepting device B13 among the synchronous triggering device U13 by optical fiber transmission signal in the synchronous triggering device; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B13 among the synchronous triggering device U23 by optical fiber transmission signal; Optical fiber transmitting apparatus A13 gives optical fiber accepting device B13 among the synchronous triggering device U33 by optical fiber transmission signal.
Synchronous triggering device U23, the U33, the U43 that connect all the other brake units simultaneously by optical fiber; Common DC bus is by being electrically connected voltage detection unit U21, and U21 is by being electrically connected pulse generation unit U22, and U22 connects synchronous triggering device U13, U33, the U43 of all the other brake units simultaneously by being electrically connected the synchronous triggering device U23 of self by optical fiber; In like manner, the residue brake unit also it.The IGBT that the output of synchronous triggering device U13, U23, U33, U43 goes to drive separately by electrical connection works.
It has the self adaptation master/slave control function the present invention, many can synchronous triggering when in parallel, be particularly suitable for many in parallel uses, and optical-fibre communications is adopted in its principal and subordinate's control signal exchange, thereby improved antijamming capability and functional reliability, be specially adapted in the strongly disturbing large-scale electric control system.Control section adopts the PWM control technology, uses the stagnant ring control of frequency conversion, variable pulse width.The present invention adopts forced air cooling.Its remarkable advantage is: system design is reasonable, volume is little, noise is little, precision is high, cost is low, efficient is high, stable, reliability is high.
Description of drawings
Fig. 1 is the control system function sketch of the embodiment of the invention.
Fig. 2 is that control circuit is connected sketch with synchronous triggering device in the embodiment of the invention.
Fig. 3 is a synchronous triggering device electrical schematic diagram in the embodiment of the invention.
Embodiment
As shown in Figure 1 to Figure 3, this high-power brake unit, insulated gate bipolar transistor IGBT by high-power brake unit special use in the control system U control connection DC chopper circuit of high-power control unit is formed, be connected with at least two synchronous triggering devices that are connected in parallel on the circuit of the control system dc bus in the control system U of described high-power control unit, described each synchronous triggering device is connected with an insulated gate bipolar transistor IGBT by lead.
Also be provided with the fault reset switch S of regulating and controlling synchronous triggering device on described this control system U
1, discharge threshold diverter switch S
2, carry operating switch S entirely
3, the working mode change switch S
4, duty ratio adjuster PD.
The common DC bus of described control system U is electrically connected at least two voltage detection units, the other end of described each voltage detection unit all is connected with and connects a pulse generation unit, described each pulse generation unit all is parallel with at least two synchronous triggering devices, a described synchronous triggering device is by pulse generation unit of the corresponding connection of lead, other remaining synchronous triggering devices are connected in parallel on this pulse generation unit by optical fiber, be all to be parallel with all synchronous triggering devices on described each pulse generation unit, insulated gate bipolar transistor IGBT has all connected one to one on described each synchronous triggering device.
The control system major function:
The ready prompt facility of system: ready above system after the default value when the DC bus-bar voltage that brake unit connects, this function points out custom system ready by system's ready light.
The system protection function:
Overheat protector: mainly be by a normally closed temperature switch is installed on the input busbar of IGBT; the temperature switch normally-closed contact is concatenated in the circuit system; the temperature of busbar is elevated to temperature switch is disconnected; the fault-signal that produces finally blocks driving pulse; IGBT is quit work, and this function is pointed out the custom system overheat protector by an overheat protector indicator light simultaneously.Press fault reset switch S this moment
1, the overheat protector indicator light extinguishes, and unclamps fault reset switch S
1Back overheat protector indicator light is lighted again, at this moment fault reset switch S
1The overheat protector fault that can not reset, after having only the temperature of busbar to drop to be lower than temperature switch alarm threshold value temperature, the overheat protector indicator light just can extinguish automatically, and the excess temperature fault automatically resets, and brake unit is reworked.
Overcurrent protection: judge whether overcurrent by the C pole tension that detects insulated gate bipolar transistor IGBT, same the same with overheat protector, the final locking pulse of fault-signal is pointed out the custom system overcurrent protection by an overcurrent protection indicator light.Press fault reset switch S this moment
1, the overcurrent protection indicator light extinguishes, and unclamps fault reset switch S
1Back overcurrent protection indicator light is lighted again, at this moment fault reset switch S
1The overcurrent protection fault that can not reset, have only the insulated gate bipolar transistor IGBT over current fault got rid of after, click fault reset switch S
1, the overcurrent protection indicator light just can extinguish, and brake unit is reworked.
Overload protection: detection be I
2T; both so-called duty ratio is after driving pulse reaches certain duty ratio, after the corresponding time of insulated gate bipolar transistor IGBT work; produce the final locking pulse of fault-signal by overload detection circuit, point out the custom system overload protection by an overload protection indicator light.Press fault reset switch S this moment
1, the overload protection indicator light extinguishes, and unclamps fault reset switch S
1Back overload protection indicator light is lighted again, at this moment fault reset switch S
1The overload protection fault that can not reset is recovered overload fault according to the need of work default in the regular hour, probably back overload protection fault automatically resets about 68s, and brake unit is reworked.
The external fault lock-out facility:
When outside electric-control system breaks down, can send a level signal to brake unit and block brake unit work, the protection brake unit is not damaged, and locking signal is sent to by 1, No. 2 terminal of terminal X1.
The fault alarm output function:
When no matter any one or a plurality of protection take place in overheat protector, overcurrent protection, the overload protection in system; system all can outwards send a level signal; judge the whether foundation of operate as normal of brake unit for the upper strata control system provides, the output fault-signal sends a pair of amount of opening often by 4 and No. 5 terminals of terminal X1 or 4 and No. 6 terminals are sent a pair of normally closed amount.
Discharge threshold diverter switch S
2, to switch between a plurality of gears in order to allow a brake unit realize braking threshold value, we have increased discharge threshold diverter switch S among the voltage detection unit U11 in Fig. 2
2, each grade voltage all has a threshold resistance, and every brake unit can be realized the work of basic, normal, high third gear electrical voltage point, when needs during at the deep low gear voltage power supply, by discharge threshold diverter switch S
2Insert the threshold resistance of deep low gear, other threshold resistance of two grades of short circuit; In like manner, when needs during at middle bay voltage power supply, by discharge threshold diverter switch S
2The threshold resistance of bay in the access, other threshold resistance of two grades of short circuit; When needs during at the most high-grade voltage power supply, by discharge threshold diverter switch S
2Insert the most high-grade threshold resistance, other threshold resistance of two grades of short circuit.
The full operating switch S that carries
3, in the overload protection testing circuit, be parallel with S by electrical connection
3Switch when brake unit does not need overload protection, is pressed the full operating switch S of carrying
3After, the conductively-closed of overload protection fault, brake unit just can be fully loaded with or overload work; but brake unit has just lost control like this, is burnt easily, and security incident takes place; influence the work that miscellaneous equipment can not be safe and reliable, this operating state generally is unallowed.
The working mode change switch S
4, every brake unit can both be realized two kinds of mode of operations, separate unit self work and many synchronous triggering parallel operations.If short circuit working mode change switch S
41, No. 2 terminal, the separate unit brake unit is by being electrically connected self work; 2, when many synchronous triggering parallel operations of needs, short circuit is No. 3 terminals, and pulse signal connects by optical fiber between each.
Duty ratio adjuster PD; in the overload protection testing circuit, be in series with a duty ratio adjuster PD by electrical connection; when the needs brake unit is worked the regular hour under maximum load; regulating load ratio regulators PD resistance is maximum; when the needs brake unit is worked the regular hour under minimum load; regulating load ratio regulators PD resistance is minimum, by regulating load ratio regulators PD resistance, and just can control brake unit bearing power within a certain period of time.
Referring to shown in Figure 2, common DC bus is by being electrically connected voltage detection unit U11, U11 is by being electrically connected pulse generation unit U12, pulse generation unit U12 connects synchronous triggering device U23, U33, the U43 of all the other brake units simultaneously by being electrically connected the synchronous triggering device U13 of self by optical fiber; Common DC bus is by being electrically connected voltage detection unit U21, voltage detection unit U21 is by being electrically connected pulse generation unit U22, pulse generation unit U22 connects synchronous triggering device U13, U33, the U43 of all the other brake units simultaneously by being electrically connected the synchronous triggering device U23 of self by optical fiber; In like manner, the residue brake unit also it.The output of synchronous triggering device U13, U23, U33, U43 goes to drive separately insulated gate bipolar transistor IGBT work by electrical connection.In Fig. 2, voltage detection unit U11 obtains the low pressure small-signal by resistance series connection dividing potential drop from the common DC bus, wherein one road given signal in low pressure small-signal and the control system is respectively as the negative, positive input signal of operational amplifier among the insulated gate bipolar transistor U11, the output of amplifier is again as wherein one road voltage given signal of voltage comparator among the pulse generation unit U12, and it is exactly the insulated gate bipolar transistor IGBT drive pulse waveform that the given signal in another road of itself and comparator relatively calculates final output.After having increased synchronous triggering device U13, the output of synchronous triggering device U12 is by being electrically connected as among the synchronous triggering device U13 or one road input signal of gate logic, the output pulse of synchronous triggering device U12 simultaneously transmits by optical fiber, give synchronous triggering device U23, the U33 of all the other brake units, the optical fiber accepting device on the U43, the output of optical fiber accepting device is directly as wherein one road input signal of synchronous triggering device or gate logic separately; In like manner, voltage detection unit U21 obtains the low pressure small-signal by resistance series connection dividing potential drop from the common DC bus, wherein one road given signal in low pressure small-signal and the control system is respectively as the negative, positive input signal of operational amplifier among the synchronous triggering device U21, the output of amplifier is again as wherein one road voltage given signal of voltage comparator among the pulse generation unit U22, and it is exactly the insulated gate bipolar transistor IGBT drive pulse waveform that the given signal in another road of itself and comparator relatively calculates final output.After having increased synchronous triggering device U23, the output of synchronous triggering device U22 is by being electrically connected as among the synchronous triggering device U23 or one road input signal of gate logic, the output pulse of synchronous triggering device U22 simultaneously transmits by optical fiber, give synchronous triggering device U13, the U33 of all the other brake units, the optical fiber accepting device on the U43, the output of optical fiber accepting device is directly as wherein one road input signal of synchronous triggering device or gate logic separately; In like manner, all the other brake unit control circuits also are connected it with synchronous triggering device.The output of every brake unit synchronous triggering device drives the safe and reliable work of insulated gate bipolar transistor IGBT by being electrically connected directly as self insulated gate bipolar transistor IGBT driving pulse.
Referring to shown in Figure 3, the output pulse Vin of described synchronous triggering device received pulse generating unit, output pulse Vin by resistance R 1 be electrically connected as self or No. 2 end input signals of gate logic U2, export pulse Vin simultaneously and amplify directly driving three road optical fiber transmitting apparatus A11 by triode V1, A12, A13 work, be provided with optical fiber delivery header U1 among the optical fiber transmitting apparatus A11, be connected with current-limiting resistance R4 on the optical fiber delivery header, R5, prevent that optical fiber delivery header U1 from being burnt because of overcurrent, the optical fiber of optical fiber accepting device B11 is accepted the optical fiber of a U3 and is accepted 1 of a power supply, be provided with surging between No. 2 terminals and absorb capacitor C 1, effect is to prevent that burning optical fiber because of the sudden change of power supply accepts head, optical fiber is accepted the output resistance R2 of head, the one end links to each other with No. 3 ends that optical fiber is accepted a U3, an other end links to each other with the working power VCC of control system, when an optical fiber acceptance U3 receives high level signal, this moment, No. 3 ends were output as high level signal by resistance R 2, when an optical fiber acceptance U3 receives low level signal, its No. 3 end is output as low level signal, the input signal of No. 3 end output signals conduct of a final optical fiber acceptance U3 or No. 3 ends of gate logic U2, optical fiber accepting device B11, B12, the B13 circuit theory is the same, in like manner the output signal of B12 is as the input signal of No. 4 ends of gate logic U2, the input signal of the output signal conduct of optical fiber accepting device B13 or No. 5 ends of gate logic U2, or gate logic U2 is four or two import or gate logics, or No. 1 of gate logic U2 end is output in the same way, the output signal Vout of output resistance R3 by No. 1 end goes to drive the safe and reliable work of insulated gate bipolar transistor IGBT as the driving pulse of insulated gate bipolar transistor IGBT.
Optical fiber transmitting apparatus A11 among the synchronous triggering device U13 gives optical fiber accepting device B11 among the synchronous triggering device U23 by optical fiber transmission signal; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B11 among the synchronous triggering device U33 by optical fiber transmission signal; Optical fiber transmitting apparatus A13 gives optical fiber accepting device B11 among the synchronous triggering device U43 by optical fiber transmission signal.Optical fiber transmitting apparatus A11 among the synchronous triggering device U23 gives optical fiber accepting device B11 among the synchronous triggering device U13 by optical fiber transmission signal; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B12 among the synchronous triggering device U33 by optical fiber transmission signal; Optical fiber transmitting apparatus A13 gives optical fiber accepting device B12 among the synchronous triggering device U43 by optical fiber transmission signal.The optical fiber transmitting apparatus A11 of U33 gives optical fiber accepting device B12 among the synchronous triggering device U13 by optical fiber transmission signal in the synchronous triggering device; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B12 among the synchronous triggering device U23 by optical fiber transmission signal; , optical fiber transmitting apparatus A13 gives optical fiber accepting device B13 among the synchronous triggering device U43 by optical fiber transmission signal.The optical fiber transmitting apparatus A11 of U43 gives optical fiber accepting device B13 among the synchronous triggering device U13 by optical fiber transmission signal in the synchronous triggering device; Optical fiber transmitting apparatus A12 gives optical fiber accepting device B13 among the synchronous triggering device U23 by optical fiber transmission signal; Optical fiber transmitting apparatus A13 gives optical fiber accepting device B13 among the synchronous triggering device U33 by optical fiber transmission signal.
Synchronous triggering device U23, the U33, the U43 that connect all the other brake units simultaneously by optical fiber; Common DC bus is by being electrically connected voltage detection unit U21, and U21 is by being electrically connected pulse generation unit U22, and U22 connects synchronous triggering device U13, U33, the U43 of all the other brake units simultaneously by being electrically connected the synchronous triggering device U23 of self by optical fiber; In like manner, the residue brake unit also it.The IGBT that the output of synchronous triggering device U13, U23, U33, U43 goes to drive separately by electrical connection works.This Figure 1 shows that control system function sketch of the present invention.U is the control system of high-power brake unit, and the insulated gate bipolar transistor of high-power brake unit special use is IGBT in the DC chopper circuit.
According to voltage detection unit and pulse generation cell operation principle, because the difference of every its brake voltage threshold value of brake unit and the dispersiveness of circuit parameter, the pulse generation unit U12 of every brake unit, U22, U32, the output pulse of U42 is in duty ratio, have nothing in common with each other on the frequency, the duty ratio of working in advance is big, the duty ratio of working at last is little, but, according to synchronous triggering device U13, U23, U33, among the U43 or the gate logic operation principle, its output pulse is only relevant with the pulse of maximum input duty cycle, so every brake unit synchronous triggering device output pulse is consistent with the output pulse of the brake unit of working in advance all, therefore, no matter which platform brake unit is worked earlier, its pulse signal will trigger other three brake units simultaneously and work simultaneously just as main drive signal.Can synchronous triggering when so just having realized that high-power brake unit is in parallel and using, synchronous working.The use that is together in parallel of many brake units, retardation efficiency has improved greatly, and the security reliability of whole system has also increased substantially.This function has improved the flexibility that brake unit uses greatly, for the hardware redundancy of large-scale drive system dynamic braking provides the bigger degree of freedom, thoroughly solved owing to the response of dynamic braking brake unit causes energy can not in time consume the serious threat that brings to system inadequately soon.And its principal and subordinate's control signal exchange employing optical-fibre communications, thereby improved antijamming capability and functional reliability, be specially adapted in the strongly disturbing large-scale electric control system.
Claims (3)
1. high-power brake unit, insulated gate bipolar transistor IGBT by high-power brake unit special use in the control system U control connection DC chopper circuit of high-power control unit is formed, it is characterized in that: be connected with at least two synchronous triggering devices that are connected in parallel on the circuit of the control system dc bus in the control system U of described high-power control unit, described each synchronous triggering device is connected with an insulated gate bipolar transistor IGBT by lead.
2. a kind of high-power brake unit according to claim 1 is characterized in that: the fault reset switch S that also is provided with the regulating and controlling synchronous triggering device on described this control system U
1, discharge threshold diverter switch S
2, carry operating switch S entirely
3, the working mode change switch S
4, duty ratio adjuster PD.
3. a kind of high-power brake unit according to claim 1, it is characterized in that: the common DC bus of described control system U is electrically connected at least two voltage detection units, the other end of described each voltage detection unit all is connected with and connects a pulse generation unit, described each pulse generation unit all is parallel with at least two synchronous triggering devices, a described synchronous triggering device is by pulse generation unit of the corresponding connection of lead, other remaining synchronous triggering devices are connected in parallel on this pulse generation unit by optical fiber, be all to be parallel with all synchronous triggering devices on described each pulse generation unit, insulated gate bipolar transistor IGBT has all connected one to one on described each synchronous triggering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910261551A CN101741230A (en) | 2009-12-14 | 2009-12-14 | High-power brake unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910261551A CN101741230A (en) | 2009-12-14 | 2009-12-14 | High-power brake unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101741230A true CN101741230A (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910261551A Pending CN101741230A (en) | 2009-12-14 | 2009-12-14 | High-power brake unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935215A (en) * | 2015-06-05 | 2015-09-23 | 柳州弘天科技有限公司 | Braking unit |
| CN106655716A (en) * | 2016-11-11 | 2017-05-10 | 天水电气传动研究所有限责任公司 | SiC-based water-cooled high-power braking unit |
| CN108574427A (en) * | 2017-03-10 | 2018-09-25 | 西门子公司 | Transducer brake unit and frequency converter |
| CN109458169A (en) * | 2018-11-16 | 2019-03-12 | 天水电气传动研究所有限责任公司 | A kind of high-power brake system controls of separate type |
| CN112647927A (en) * | 2020-12-29 | 2021-04-13 | 天水电气传动研究所集团有限公司 | Automatic early warning method for power point temperature rise step type grading of drilling machine electric control system |
-
2009
- 2009-12-14 CN CN200910261551A patent/CN101741230A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935215A (en) * | 2015-06-05 | 2015-09-23 | 柳州弘天科技有限公司 | Braking unit |
| CN106655716A (en) * | 2016-11-11 | 2017-05-10 | 天水电气传动研究所有限责任公司 | SiC-based water-cooled high-power braking unit |
| CN108574427A (en) * | 2017-03-10 | 2018-09-25 | 西门子公司 | Transducer brake unit and frequency converter |
| CN108574427B (en) * | 2017-03-10 | 2022-06-28 | 西门子公司 | Frequency converter brake unit and frequency converter |
| CN109458169A (en) * | 2018-11-16 | 2019-03-12 | 天水电气传动研究所有限责任公司 | A kind of high-power brake system controls of separate type |
| CN109458169B (en) * | 2018-11-16 | 2023-11-14 | 天水电气传动研究所有限责任公司 | Separated high-power braking system control device |
| CN112647927A (en) * | 2020-12-29 | 2021-04-13 | 天水电气传动研究所集团有限公司 | Automatic early warning method for power point temperature rise step type grading of drilling machine electric control system |
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Open date: 20100616 |