CN103390980A - Self-rheostat-starting wound rotor electric motor device - Google Patents
Self-rheostat-starting wound rotor electric motor device Download PDFInfo
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- CN103390980A CN103390980A CN201310256086XA CN201310256086A CN103390980A CN 103390980 A CN103390980 A CN 103390980A CN 201310256086X A CN201310256086X A CN 201310256086XA CN 201310256086 A CN201310256086 A CN 201310256086A CN 103390980 A CN103390980 A CN 103390980A
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Abstract
The invention provides a self-rheostat-starting wound rotor electric motor device, relates to starting electric motors and aims at solving the problems that an electric brush and a slip ring mechanism are needed and control of the connection and the disconnection of resistors needs to be performed in an existing rotor winding externally-connected technique. The self-rheostat-starting wound rotor electric motor device comprises a controller, a contactor, a first resistor, a second resistor, a third resistor and a generator speed measuring sensor; the controller, the contactor, the first resistor, the second resistor, the third resistor and the generator speed measuring sensor are all arranged in an inner cavity of a rotor iron core, the first resistor is communicated with the A end of an AX winding, the second resistor is communicated with the B end of a BY winding, the third resistor is communicated with the C end of a CZ winding, the A end, the B end and the C end are connected onto a normally-closed contact of the contactor simultaneously, and the winding of the contactor is correspondingly communicated with the controller; the signal output end of the generator speed measuring sensor is communicated with the input end of speed measurement signals of the controller.
Description
Technical field
The present invention relates to the starting motor device.
Background technology
Wound rotor motor is drawn the rotor winding by brush and slip ring system at present.In order to realize larger starting torque starting, when starting, be generally resistance on rotor winding string, after starting is completed, then resistance is removed, also can be by this principle series connection frequency sensitive resistor.But, rotor winding outer meeting resistance Technology Need brush and slip ring mechanism, and need to control access and the disconnection of resistance.
Summary of the invention
The objective of the invention is in order to solve existing rotor winding outer meeting resistance Technology Need brush and slip ring mechanism, and the problem that need to control access and the disconnection of resistance, a kind of electronic device from variable-resistance started wound rotor is provided.
electronic device from variable-resistance started wound rotor, it comprises wound rotor motor, the rotor core coaxial rings is set in the inner chamber of stator, leave air-gap between the outer surface of rotor core and the inner surface of stator, three phase winding correspondences are looped around the outer surface of rotor core, described three phase windings are respectively AX, BY and CZ, it also comprises controller, contactor, a resistor, No. two resistors, No. three resistors and generator tachogenerator, controller, contactor, a resistor, No. two resistors, No. three resistors and generator tachogenerator all are placed in the inner chamber of rotor core, one end of a resistor is communicated with the A end of AX winding by the normally opened contact of contactor, one end of No. two resistors is communicated with the B end of BY winding by the normally opened contact of contactor, one end of No. three resistors is communicated with the C end of CZ winding by the normally opened contact of contactor, the other end of a resistor, the other end of No. two resistors is communicated with the other end of No. three resistors, the A end of AX winding, the B end of BY winding is connected on the normally-closed contact of contactor simultaneously with the C end of CZ winding, one end of the coil of contactor is communicated with a touch controls output of controller, the other end of the coil of contactor is communicated with another touch controls output of controller, the signal output part of generator tachogenerator is communicated with the input of the tachometer signal of controller,
The concrete control procedure of controller is: step 1, controller and port initialization; Zero variate-value MT is a bit larger tham in step 2, setting; Step 3, from P0.0 mouth output duty cycle, be the pwm control signal of D; Step 4, from analog input mouth AIN0, get generator tachogenerator data; Step 5, judge that its rate of change, whether greater than MT, is, perform step six, no, perform step five; Step 6, from P0.1 mouth output high level; Step 7, judge that whether the AIN0 rate of change that fetches data is zero, no, perform step six, be to perform step eight; Step 8, from P0.1 mouth output low level; Step 9, judge whether to continue, be, perform step five, no, finish.
The present invention during with motor starting needed resistance and controller all be placed into motor interior, do not need the needed brush of outer meeting resistance technology and slip ring mechanism, integration is good, makes motor become a holonomic system.Because resistance and controller are all prepackage lines when motor is made, reliability is higher than existing electronic device 50%.
Description of drawings
Fig. 1 is structural representation of the present invention, and Fig. 2 is structural representation of the present invention, and Fig. 3 is circuit diagram of the present invention, and Fig. 4 is control flow schematic diagram of the present invention.
Embodiment
embodiment one: in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4 illustrate present embodiment, the described electronic device from variable-resistance started wound rotor of present embodiment, it comprises wound rotor motor 1, rotor core 1-2 coaxial rings is set in the inner chamber of stator 1-1, leave air-gap 1-3 between the inner surface of the outer surface of rotor core 1-2 and stator 1-1, three phase winding correspondences are looped around the outer surface of rotor core 1-2, described three phase windings are respectively AX, BY and CZ, it also comprises controller 2-1, contactor 2-2, a resistor 2-3, No. two resistor 2-4, No. three resistor 2-5 and generator tachogenerator S, controller 2-1, contactor 2-2, a resistor 2-3, No. two resistor 2-4, No. three resistor 2-5 and generator tachogenerator S all are placed in the inner chamber of rotor core 1-2, the end of a resistor 2-3 is communicated with the A end of AX winding by the normally opened contact K1 of contactor 2-2, the end of No. two resistor 2-4 is communicated with the B end of BY winding by the normally opened contact K1 of contactor 2-2, the end of No. three resistor 2-5 is communicated with the C end of CZ winding by the normally opened contact K1 of contactor 2-2, the other end of a resistor 2-3, the other end of No. two resistor 2-4 is communicated with the other end of No. three resistor 2-5, the A end of AX winding, the B end of BY winding is connected on the normally-closed contact K2 of contactor 2-2 simultaneously with the C end of CZ winding, one end of the coil of contactor 2-2 is communicated with the touch controls output of controller 2-1, the other end of the coil of contactor 2-2 is communicated with another touch controls output of controller 2-1, the signal output part of generator tachogenerator S is communicated with the input of the tachometer signal of controller 2-1,
The concrete control procedure of controller 2-1 is: step 1, controller and port initialization; Zero variate-value MT is a bit larger tham in step 2, setting; Step 3, from P0.0 mouth output duty cycle, be the pwm control signal of D; Step 4, from analog input mouth AIN0, get generator tachogenerator data; Step 5, judge that its rate of change, whether greater than MT, is, perform step six, no, perform step five; Step 6, from P0.1 mouth output high level; Step 7, judge that whether the AIN0 rate of change that fetches data is zero, no, perform step six, be to perform step eight; Step 8, from P0.1 mouth output low level; Step 9, judge whether to continue, be, perform step five, no, finish.
One end of three resistors links by A, B, the C terminal of respectively with three windings of contactor normally opened contact K1, and A, B, C terminal also link by contactor normally-closed contact K2, see Fig. 1; The other end of three resistors connects together, and sees Fig. 2.Two lines of the coil of contactor are connected with controller.Like this, whether controller can be connected with the motor winding by the contactor control resistor.
The physical circuit of controller is seen Fig. 3: DC is lithium battery, M1 is the switch by the digital output terminal P0.0 control of single-chip microcomputer C8051F020, M1 is operated on off state, make the curent change of the armature winding L1 of the transformer T that flows through, and induce respectively sufficiently high voltage on secondary two winding L 2 and L3.D1 is fly-wheel diode, provides discharge loop to L1 when M1 disconnects.The induced voltage of T level L2 of transformer is 24V after the D2 rectification, offer contactor L4 and switch M2 branch road electric energy.The induced voltage of T level L3 of transformer is 3.3V after the D3 rectification, to single-chip microcomputer, power.Single-chip microcomputer is by the signal through resistance R 1 and R2 dividing potential drop after of analog input interface AIN0 reception from generator tachogenerator S, according to the break-make of its signal amplitude situation by the coil of digital output terminal P0.1 control contactor L4.Resistance R 1 is selected 100 kilohms, and resistance R 2 is selected 5 kilohms.
the specific works process is: when motor is static, contactor L4 with normally-closed contact K2 closed, and three terminals of A, B and C are connected, be equivalent to short circuit, when motor has just started rotation, the rate of change of the signal of generator tachogenerator S can become large from zero, the rate of change of the signal of the generator tachogenerator S that receives from analog input mouth AIN0 when single-chip microcomputer is during more than or equal to default MT value, just can judge the rotation that motor is real, just pass through the connection of the coil of digital output terminal P0.1 control contactor L4, and make contactor L4 with normally opened contact K1 closed, make simultaneously contactor L4 with normally-closed contact K2 disconnect, therefore with A, three terminals of B and C directly are not connected, and three resistance are received in three corresponding windings with star fashion, realized the series resistance starting of motor.After motor runs well, the rate of change of motor speed is zero, therefore the rate of change of generator tachogenerator S also approaches zero, and disconnection contactor L4 coil, make contactor L4 with normally opened contact K1 disconnect, make simultaneously contactor L4 with normally-closed contact K2 closed,, therefore three terminals of A, B and C directly are connected, and three resistance are cut off three windings.
Embodiment two: present embodiment is the further restriction to the described electronic device from variable-resistance started wound rotor of embodiment one, and generator tachogenerator S adopts the ZCF121 transducer.
Embodiment three: in conjunction with Fig. 3, present embodiment is described, present embodiment is the further restriction to the described electronic device from variable-resistance started wound rotor of embodiment one, and controller 2-1 adopts the C8051F020 single-chip microcomputer.
The control flow block diagram of single-chip microcomputer is seen Fig. 4.
Embodiment four: present embodiment is the further restriction to the described electronic device from variable-resistance started wound rotor of embodiment one, and resistor 2-3, No. two resistor 2-4 and No. three resistor 2-5 all adopt the resistance of 10 ohm.
Claims (4)
1. from the electronic device of variable-resistance started wound rotor, it comprises wound rotor motor (1), rotor core (1-2) coaxial rings is set in the inner chamber of stator (1-1), leave air-gap (1-3) between the inner surface of the outer surface of rotor core (1-2) and stator (1-1), three phase winding correspondences are looped around the outer surface of rotor core (1-2), described three phase windings are respectively AX, BY and CZ, it is characterized in that, it also comprises controller (2-1), contactor (2-2), a resistor (2-3), No. two resistors (2-4), No. three resistors (2-5) and generator tachogenerator (S), controller (2-1), contactor (2-2), a resistor (2-3), No. two resistors (2-4), No. three resistors (2-5) and generator tachogenerator (S) all are placed in the inner chamber of rotor core (1-2), one end of a resistor (2-3) is communicated with the A end of AX winding by the normally opened contact (K1) of contactor (2-2), one end of No. two resistors (2-4) is communicated with the B end of BY winding by the normally opened contact (K1) of contactor (2-2), one end of No. three resistors (2-5) is communicated with the C end of CZ winding by the normally opened contact (K1) of contactor (2-2), the other end of a resistor (2-3), the other end of No. two resistors (2-4) is communicated with the other end of No. three resistors (2-5), the A end of AX winding, the B end of BY winding is connected on the normally-closed contact (K2) of contactor (2-2) simultaneously with the C end of CZ winding, one end of the coil of contactor (2-2) is communicated with a touch controls output of controller (2-1), the other end of the coil of contactor (2-2) is communicated with another touch controls output of controller (2-1), the signal output part of generator tachogenerator (S) is communicated with the input of the tachometer signal of controller (2-1),
The concrete control procedure of controller (2-1) is: step 1, controller and port initialization; Zero variate-value MT is a bit larger tham in step 2, setting; Step 3, from P0.0 mouth output duty cycle, be the pwm control signal of D; Step 4, from analog input mouth AIN0, get generator tachogenerator data; Step 5, judge that its rate of change, whether greater than MT, is, perform step six, no, perform step five; Step 6, from P0.1 mouth output high level; Step 7, judge that whether the AIN0 rate of change that fetches data is zero, no, perform step six, be to perform step eight; Step 8, from P0.1 mouth output low level; Step 9, judge whether to continue, be, perform step five, no, finish.
2., according to claim 1 from the electronic device of variable-resistance started wound rotor, it is characterized in that, generator tachogenerator (S) adopts the ZCF121 transducer.
3., according to claim 1 from the electronic device of variable-resistance started wound rotor, it is characterized in that, controller (2-1) adopts the C8051F020 single-chip microcomputer.
4., according to claim 1 from the electronic device of variable-resistance started wound rotor, it is characterized in that, a resistor (2-3), No. two resistors (2-4) and No. three resistors (2-5) all adopt the resistance of 10 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310256086.XA CN103390980B (en) | 2013-06-25 | 2013-06-25 | From the electronic device of variable-resistance started wound rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310256086.XA CN103390980B (en) | 2013-06-25 | 2013-06-25 | From the electronic device of variable-resistance started wound rotor |
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| CN103390980A true CN103390980A (en) | 2013-11-13 |
| CN103390980B CN103390980B (en) | 2016-02-03 |
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| CN201310256086.XA Active CN103390980B (en) | 2013-06-25 | 2013-06-25 | From the electronic device of variable-resistance started wound rotor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88212705U (en) * | 1988-01-06 | 1988-12-07 | 张树行 | Brushless frequency-sensing voltage-dependent resistor |
| US6072296A (en) * | 1998-05-14 | 2000-06-06 | Mannesmann Ag | Asynchronous motor for a drive mechanism, such as hoists or running gears, with controllable rotational speed and rotational direction |
| CN101997301A (en) * | 2010-08-06 | 2011-03-30 | 许晓华 | Start protecting circuit of low-voltage and high-power motor |
| CN102214978A (en) * | 2010-04-02 | 2011-10-12 | 荣成市长顺电机厂 | Wire-wound three-phase asynchronous motor with external electric brush and external slide ring |
-
2013
- 2013-06-25 CN CN201310256086.XA patent/CN103390980B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88212705U (en) * | 1988-01-06 | 1988-12-07 | 张树行 | Brushless frequency-sensing voltage-dependent resistor |
| US6072296A (en) * | 1998-05-14 | 2000-06-06 | Mannesmann Ag | Asynchronous motor for a drive mechanism, such as hoists or running gears, with controllable rotational speed and rotational direction |
| CN102214978A (en) * | 2010-04-02 | 2011-10-12 | 荣成市长顺电机厂 | Wire-wound three-phase asynchronous motor with external electric brush and external slide ring |
| CN101997301A (en) * | 2010-08-06 | 2011-03-30 | 许晓华 | Start protecting circuit of low-voltage and high-power motor |
Non-Patent Citations (1)
| Title |
|---|
| 张长富: "《电机学》", 31 December 1998, article ""第二节 异步电动机的起动性能"", pages: 185 * |
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Effective date of registration: 20210304 Address after: 2132 Building 2, No.1, Dagang Dongfang Road, Zhenjiang New District, Zhenjiang City, Jiangsu Province Patentee after: ZHENJIANG ZEJIA AUTOMOBILE PARTS Co.,Ltd. Address before: 150080 No. 74, Xuefu Road, Nangang District, Heilongjiang, Harbin Patentee before: Heilongjiang University |
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