CN101814727B - 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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- CN101814727B CN101814727B CN2010101754629A CN201010175462A CN101814727B CN 101814727 B CN101814727 B CN 101814727B CN 2010101754629 A CN2010101754629 A CN 2010101754629A CN 201010175462 A CN201010175462 A CN 201010175462A CN 101814727 B CN101814727 B CN 101814727B
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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 practical application, 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, and the problem that causes system capacitance to damage perhaps blown fuse occurs.
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; Said current-limiting resistance two ends also are connected to the relay that is controlled by dsp processor; The output of said current-limiting resistance is the magneto power supply through charging capacitor and IGBT module, and the output of described dsp processor is connected with said 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; Through 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 accompanying drawing and examples of implementation the present invention is done and to further describe.
As shown in Figure 1; The present 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; Said current-limiting resistance 4 two ends also are connected to the relay 3 that is controlled by dsp processor, and the output of said 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 said 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 is (as shown in Figure 1; Here only use a pipe in the IGBT module) open-minded; Relay 3 breaks off, and through 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 accomplished.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 through IGBT module 2; The busbar voltage that current value that the present invention measures through 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 through 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 through diode power supply in the body of IGBT, can realize seamless switching.When permanent magnetic motor begin current value or the voltage sensor measured voltage value of operate as normal dsp processor through judging current sensor measurement normal after, drive the conducting of IGBT module.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (1)
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; Said current-limiting resistance two ends also are connected to the relay that is controlled by dsp processor; The output of said current-limiting resistance is the magneto power supply through charging capacitor and the 2nd IGBT module, and the output of described dsp processor is connected with a said 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; Described dsp processor also is connected with the voltage sensor that is used to measure the magneto supply power voltage; When magneto was started shooting, an IGBT module was open-minded, and relay breaks off, and through current-limiting resistance charging capacitor was charged, relay on beginning work after the charging capacitor charging is accomplished; When overvoltage or overcurrent occurring; Said dsp processor is closed an IGBT module through an IGBT module drive circuit; The voltage on the charging capacitor reduces after the normal operation when magneto recovers; The energy of electrokinetic cell or super capacitance cell the instant electricity loss phenomenon can not occur through diode power supply in the body of an IGBT module, realizes seamless switching; 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 |
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| Publication Number | Publication Date |
|---|---|
| CN101814727A CN101814727A (en) | 2010-08-25 |
| CN101814727B true 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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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447431B (en) * | 2010-10-12 | 2015-06-03 | 光阳工业股份有限公司 | Downhill automatic deceleration control device and method for electric scooter |
| 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 |
| CN105745730B (en) * | 2013-11-29 | 2018-11-02 | 西门子公司 | Device and method for switching direct current |
| 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 |
| CN103972871B (en) * | 2014-03-04 | 2017-02-08 | 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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| CN101630862A (en) * | 2009-08-05 | 2010-01-20 | 华南理工大学 | Power system of compound energy electro-vehicle |
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| CN201674215U (en) * | 2010-05-18 | 2010-12-15 | 福州欣联达电子科技有限公司 | High rotating speed current-limiting circuit of permanent magnet motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002110258A (en) * | 2000-10-03 | 2002-04-12 | Alps Electric Co Ltd | Battery with protection circuit |
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2010
- 2010-05-18 CN CN2010101754629A patent/CN101814727B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789900A (en) * | 1994-12-05 | 1998-08-04 | Fuji Photo Film Co., Ltd. | Device for protecting a secondary battery from overcharge and overdischarge |
| CN1317421A (en) * | 2000-04-12 | 2001-10-17 | 中国科学院金属研究所 | DC motor control system of electric vehicle |
| CN2850140Y (en) * | 2005-10-21 | 2006-12-20 | 许海鹰 | Motor driving controller using battery to supply power |
| CN101656415A (en) * | 2006-09-07 | 2010-02-24 | 日立工机株式会社 | Power tool |
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| CN101814727A (en) | 2010-08-25 |
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