CN101814727A - Permanent magnet motor high rotating speed current limiting circuit - Google Patents
Permanent magnet motor high rotating speed current limiting circuit Download PDFInfo
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- CN101814727A CN101814727A CN 201010175462 CN201010175462A CN101814727A CN 101814727 A CN101814727 A CN 101814727A CN 201010175462 CN201010175462 CN 201010175462 CN 201010175462 A CN201010175462 A CN 201010175462A CN 101814727 A CN101814727 A CN 101814727A
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Abstract
The invention relates to a permanent magnet motor high rotating speed current limiting circuit. The circuit comprises a power battery or a super capacitor battery and is characterized in that: the output end of the power battery or the super capacitor battery is connected with a current limiting resistor through an IGBT module; the two ends of the current limiting resistor are in parallel connection with relays which are controlled by a DSP (digital signal processor); the output end of the current limiting resistor supplies power to a permanent magnet motor through a charging capacitor and the IGBT module; the output end of the DSP is connected with the IGBT module through an IGBT module drive circuit; and the DSP is also connected with a current sensor used for measuring the supply current of the permanent magnet motor. The permanent magnet motor high rotating speed current limiting circuit is mainly used for limiting the current of a high rotating speed of the permanent magnet motor driven by a mixed power and pure electric vehicle, and can effectively solve the problem of damaging a capacitor or a battery or burning a fuse caused by charging the super capacitor battery or the power battery under the condition of over-current or over-voltage because of the over-voltage phenomenon of the permanent magnet motor when a vehicle is in a high-speed running process or a high-speed sloping down process.
Description
Technical field
The present invention relates to a kind of permanent magnet motor high rotating speed current limiting circuit, particularly a kind of electric automobile permanent magnet motor high rotating speed current limiting circuit.
Background technology
Development along with existing electric energy technology, should be in energy conservation and environment protection, electric vehicle engineering is constantly ripe, yet in actual applications, electric automobile the charging of overvoltage phenomenon to super capacitance cell or electrokinetic cell overcurrent-overvoltage can occur in high-speed cruising or high speed descending process, cause the problem of system capacitance damage or blown fuse to occur.
Summary of the invention
In view of the above problems, the purpose of this invention is to provide a kind of permanent magnet motor high rotating speed current limiting circuit and be mainly used in the current limliting of mixing power and pure electric automobile driving permanent magnet motor high rotating speed, can effectively solve and the magneto generating voltage in high-speed running automobile or high speed descending process, occurs and the overvoltage phenomenon occurs, damage electric capacity or battery or the problem of blown fuse occurs the charging of super capacitor or electrokinetic cell overcurrent-overvoltage.
The present invention adopts following scheme to realize: a kind of permanent magnet motor high rotating speed current limiting circuit, comprise electrokinetic cell or super capacitance cell, it is characterized in that: the output of described electrokinetic cell or super capacitance cell is connected with a current-limiting resistance through an IGBT module, described current-limiting resistance two ends also are connected to the relay that is controlled by dsp processor, the output of described current-limiting resistance is the magneto power supply through charging capacitor and IGBT module, and the output of described dsp processor is connected with described IGBT module through an IGBT module drive circuit; Described dsp processor also is connected with the current sensor that is used to measure the magneto supply current.
Circuit structure of the present invention is simple, by electric current, voltage sensor acquired signal, by the dsp processor analysis, control IGBT module realizes the restriction of electric current, and the IGBT module that adopts have input impedance height, switching speed soon, voltage is low on the same stage, blocking voltage is high, bear characteristics such as electric current is big, make circuit performance more stable.
Description of drawings
Fig. 1 is a circuit structure theory diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is described further.
As shown in Figure 1, the invention provides a kind of permanent magnet motor high rotating speed current limiting circuit, comprise electrokinetic cell or super capacitance cell 1, it is characterized in that: the output of described electrokinetic cell or super capacitance cell 1 is connected with a current-limiting resistance 4 through an IGBT module 2, described current-limiting resistance 4 two ends also are connected to the relay 3 that is controlled by dsp processor, the output of described current-limiting resistance 4 is magneto 6 power supplies through charging capacitor 7 and IGBT module 2, and the output of described dsp processor is connected with described IGBT module 2 through an IGBT module drive circuit; Described dsp processor also is connected with the current sensor 10 that is used to measure the magneto supply current.
In preferred embodiment of the present invention, described dsp processor also is connected with the voltage sensor that is used to measure the magneto supply power voltage; Described charging capacitor is a charging capacitor group.
Specifically, during the magneto start, IGBT module 2(as shown in Figure 1, here only use a pipe in the IGBT module) open-minded, relay 3 disconnects, and by 7 chargings of 4 pairs of charging capacitors of current-limiting resistance, relay 3 was connected and started working after charging capacitor 7 chargings were finished.When permanent magnetic motor 6 high-speed cruisings occurring, the induced potential super-high-current can pour in electrokinetic cell or the super capacitance cell 1 by IGBT module 2, the busbar voltage that current value that the present invention measures by current sensor 10 and busbar voltage transducer 8 are measured is given dsp processor 9 and is carried out computing, if DSP closes the IGBT module by IGBT module drive circuit when overvoltage or overcurrent.The voltage on the charging capacitor 7 reduces after the normal operation when magneto recovers, and the energy of electrokinetic cell and super capacitance cell the instant electricity loss phenomenon can not occur by diode power supply in the body of IGBT, can realize seamless switching.When permanent magnetic motor begin the operate as normal dsp processor by judging current sensor measurement current value or the magnitude of voltage measured of voltage sensor normal after, drive the conducting of IGBT module.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. permanent magnet motor high rotating speed current limiting circuit, comprise electrokinetic cell or super capacitance cell, it is characterized in that: the output of described electrokinetic cell or super capacitance cell is connected with a current-limiting resistance through an IGBT module, described current-limiting resistance two ends also are connected to the relay that is controlled by dsp processor, the output of described current-limiting resistance is the magneto power supply through charging capacitor and IGBT module, and the output of described dsp processor is connected with described IGBT module through an IGBT module drive circuit; Described dsp processor also is connected with the current sensor that is used to measure the magneto supply current.
2. permanent magnet motor high rotating speed current limiting circuit according to claim 1 is characterized in that: described dsp processor also is connected with the voltage sensor that is used to measure the magneto supply power voltage.
3. permanent magnet motor high rotating speed current limiting circuit according to claim 1 and 2, it is characterized in that: when magneto was started shooting, the IGBT module was open-minded, and relay disconnects, by current-limiting resistance charging capacitor is charged, relay was connected and is started working after the charging capacitor charging was finished.
4. permanent magnet motor high rotating speed current limiting circuit according to claim 1 is characterized in that: described charging capacitor is a charging capacitor group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101754629A CN101814727B (en) | 2010-05-18 | 2010-05-18 | Permanent magnet motor high rotating speed current limiting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101754629A CN101814727B (en) | 2010-05-18 | 2010-05-18 | Permanent magnet motor high rotating speed current limiting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101814727A true CN101814727A (en) | 2010-08-25 |
| CN101814727B CN101814727B (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101754629A Active CN101814727B (en) | 2010-05-18 | 2010-05-18 | Permanent magnet motor high rotating speed current limiting circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097788A (en) * | 2010-12-08 | 2011-06-15 | 上海申瑞电力科技股份有限公司 | Protection circuit of storage capacitor |
| CN102447431A (en) * | 2010-10-12 | 2012-05-09 | 光阳工业股份有限公司 | Downhill automatic deceleration control device and method for electric scooter |
| CN103795038A (en) * | 2014-01-27 | 2014-05-14 | 北京智行鸿远汽车技术有限公司 | Inverter phase current over-current hardware protection system and method for new energy automobile |
| CN103972871A (en) * | 2014-03-04 | 2014-08-06 | 南京磐能电力科技股份有限公司 | Direct-current feeder non-arc switch with low power consumption and overcurrent and overvoltage protection function and method for implementing direct-current feeder non-arc switch |
| CN105680705A (en) * | 2016-03-29 | 2016-06-15 | 泰州优宾晶圆科技有限公司 | Automobile rectifier |
| CN105745730A (en) * | 2013-11-29 | 2016-07-06 | 西门子公司 | Device and method for switching a direct current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102097788A (en) * | 2010-12-08 | 2011-06-15 | 上海申瑞电力科技股份有限公司 | Protection circuit of storage capacitor |
| CN105745730A (en) * | 2013-11-29 | 2016-07-06 | 西门子公司 | Device and method for switching a direct current |
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| CN105745730B (en) * | 2013-11-29 | 2018-11-02 | 西门子公司 | Device and method for switching direct current |
| CN103795038A (en) * | 2014-01-27 | 2014-05-14 | 北京智行鸿远汽车技术有限公司 | Inverter phase current over-current hardware protection system and method for new energy automobile |
| CN103795038B (en) * | 2014-01-27 | 2019-08-16 | 北汽福田汽车股份有限公司 | New-energy automobile inverter phase current over-current hardware protection system and method |
| CN103972871A (en) * | 2014-03-04 | 2014-08-06 | 南京磐能电力科技股份有限公司 | Direct-current feeder non-arc switch with low power consumption and overcurrent and overvoltage protection function and method for implementing direct-current feeder non-arc switch |
| CN105680705A (en) * | 2016-03-29 | 2016-06-15 | 泰州优宾晶圆科技有限公司 | Automobile rectifier |
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| Publication number | Publication date |
|---|---|
| CN101814727B (en) | 2012-08-08 |
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