CN103390980B - From the electronic device of variable-resistance started wound rotor - Google Patents
From the electronic device of variable-resistance started wound rotor Download PDFInfo
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- CN103390980B CN103390980B CN201310256086.XA CN201310256086A CN103390980B CN 103390980 B CN103390980 B CN 103390980B CN 201310256086 A CN201310256086 A CN 201310256086A CN 103390980 B CN103390980 B CN 103390980B
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Abstract
From the electronic device of variable-resistance started wound rotor, relate to starting motor device, the present invention needs brush and slip ring mechanism to solve existing rotor windings outer meeting resistance technology, and need the problem that access and the disconnection of resistance are controlled, the present invention includes 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 are all placed in the inner chamber of rotor core, a resistor is held with the A of AX winding and is communicated with, No. two resistors are held with the B of BY winding and are communicated with, No. three resistors are held with the C of CZ winding and are communicated with, A holds, B end is held with C and is connected on the normally-closed contact of contactor simultaneously, the coil correspondence of contactor is communicated with controller, the signal output part of generator tachogenerator is communicated with the input of the tachometer signal of controller.The present invention is applicable to electronic device.
Description
Technical field
The present invention relates to starting motor device.
Background technology
Current wound rotor motor is drawn rotor windings by brush and slip ring system.Starting to realize larger starting torque, when starting, being generally resistance on rotor windings string, after starting completes, then resistance being removed, also can by this principle series connection frequency sensitive resistor.But rotor windings outer meeting resistance technology needs brush and slip ring mechanism, and need to control the access of resistance and disconnection.
Summary of the invention
The object of the invention is to need brush and slip ring mechanism to solve existing rotor windings outer meeting resistance technology, and need problem that access and the disconnection of resistance are controlled, a kind of electronic device from variable-resistance started wound rotor is provided.
From the electronic device of variable-resistance started wound rotor, it comprises wound rotor motor, rotor core coaxial rings is set in the inner chamber of stator, air-gap is left between the outer surface of rotor core and the inner surface of stator, three-phase windings correspondence is looped around the outer surface of rotor core, described three-phase windings is AX respectively, 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 are all placed in the inner chamber of rotor core, one end of a resistor is held with the A of AX winding by the normally opened contact of contactor and is communicated with, one end of No. two resistors is held with the B of BY winding by the normally opened contact of contactor and is communicated with, one end of No. three resistors is held with the C of CZ winding by the normally opened contact of contactor and is communicated with, 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 held with the C of CZ winding and is connected on the normally-closed contact of contactor simultaneously, one end of the coil of contactor is communicated with controller touch controls output, 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 one, controller and port initialization; Step 2, setting are a bit larger tham the variate-value MT of zero; Step 3, from P0.0 mouth output duty cycle be the pwm control signal of D; Step 4, get generator tachogenerator data from analog input mouth AIN0; Step 5, judge whether its rate of change is greater than MT, is, then perform step 6, no, then perform step 5; Step 6, from P0.1 mouth export high level; Step 7, judge whether the AIN0 rate of change that fetches data is zero, no, then perform step 6, be, then perform step 8; Step 8, from P0.1 mouth output low level; Step 9, judge whether continue, be then perform step 5, no, then terminate.
Resistance required during motor starting and controller are all placed into motor interior by the present invention, do not need the brush required for outer meeting resistance technology and slip ring mechanism, and integration is good, make motor become a holonomic system.Because resistance and controller are all pre-install line when motor manufactures, reliability is higher than existing electronic device 50%.
Accompanying drawing explanation
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: composition graphs 1, Fig. 2, Fig. 3 and Fig. 4 illustrates present embodiment, from the electronic device of variable-resistance started wound rotor described in present embodiment, it comprises wound rotor motor 1, rotor core 1-2 coaxial rings is set in the inner chamber of stator 1-1, air-gap 1-3 is left between the outer surface of rotor core 1-2 and the inner surface of stator 1-1, three-phase windings correspondence is looped around the outer surface of rotor core 1-2, described three-phase windings is AX respectively, 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 are all placed in the inner chamber of rotor core 1-2, one end of a resistor 2-3 is held with the A of AX winding by the normally opened contact K1 of contactor 2-2 and is communicated with, one end of No. two resistor 2-4 is held with the B of BY winding by the normally opened contact K1 of contactor 2-2 and is communicated with, one end of No. three resistor 2-5 is held with the C of CZ winding by the normally opened contact K1 of contactor 2-2 and is communicated with, 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 held with the C of CZ winding and is connected on the normally-closed contact K2 of contactor 2-2 simultaneously, 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 one, controller and port initialization; Step 2, setting are a bit larger tham the variate-value MT of zero; Step 3, from P0.0 mouth output duty cycle be the pwm control signal of D; Step 4, get generator tachogenerator data from analog input mouth AIN0; Step 5, judge whether its rate of change is greater than MT, is, then perform step 6, no, then perform step 5; Step 6, from P0.1 mouth export high level; Step 7, judge whether the AIN0 rate of change that fetches data is zero, no, then perform step 6, be, then perform step 8; Step 8, from P0.1 mouth output low level; Step 9, judge whether continue, be then perform step 5, no, then terminate.
One end of three resistors is connected by A, the B of contactor normally opened contact K1 respectively with three windings, C terminal, and A, B, C terminal are also connected 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 motor winding by contactor control resistor.
The physical circuit of controller is shown in that Fig. 3: DC is lithium battery, M1 is the switch controlled by the digital output terminal P0.0 of single-chip microcomputer C8051F020, M1 is operated on off state, make the curent change of the armature winding L1 flowing through transformer T, and induce sufficiently high voltage respectively in secondary two winding L 2 and L3.D1 is fly-wheel diode, provides discharge loop when M1 disconnects to L1.The induced voltage of transformer T level L2 is 24V after D2 rectification, is supplied to contactor L4 and switch M2 branch road electric energy.The induced voltage of transformer T level L3 is 3.3V after D3 rectification, powers to single-chip microcomputer.Single-chip microcomputer receives the signal after resistance R1 and R2 dividing potential drop of self generator tachogenerator S by analog input interface AIN0, according to the break-make of its signal amplitude situation by the coil of digital output terminal P0.1 control contactor L4.Resistance R1 selects 100 kilohms, and resistance R2 selects 5 kilohms.
Specific works process is: when motor is static, contactor L4 with normally-closed contact K2 close, and A, B and C tri-terminals are connected, are equivalent to short circuit, when motor just starts rotation, the rate of change of the signal of generator tachogenerator S can become large from zero, when the rate of change of the signal of the generator tachogenerator S that single-chip microcomputer receives from analog input mouth AIN0 is more than or equal to default MT value, just can judge the rotation that motor is real, just by the connection of the coil of digital output terminal P0.1 control contactor L4, and make contactor L4 with normally opened contact K1 close, make simultaneously contactor L4 with normally-closed contact K2 disconnect, therefore by A, B with C tri-terminals are not directly connected, and three resistance are received in a star fashion in three corresponding windings, achieve 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 is also close to zero, and disconnect contactor L4 coil, make contactor L4 with normally opened contact K1 disconnect, make simultaneously contactor L4 with normally-closed contact K2 close, therefore A, B and C tri-terminals to be directly connected, and three resistance are cut off three windings.
Embodiment two: present embodiment be to described in embodiment one from the further restriction of the electronic device of variable-resistance started wound rotor, generator tachogenerator S adopts ZCF121 transducer.
Embodiment three: composition graphs 3 illustrates present embodiment, present embodiment be to described in embodiment one from the further restriction of the electronic device of variable-resistance started wound rotor, controller 2-1 adopts C8051F020 single-chip microcomputer.
Fig. 4 is shown in by the control flow block diagram of single-chip microcomputer.
Embodiment four: present embodiment be to described in embodiment one from the further restriction of the electronic device of variable-resistance started wound rotor, 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), air-gap (1-3) is left between the outer surface of rotor core (1-2) and the inner surface of stator (1-1), three-phase windings correspondence is looped around the outer surface of rotor core (1-2), described three-phase windings is AX respectively, 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) are all placed in the inner chamber of rotor core (1-2), one end of a resistor (2-3) is held with the A of AX winding by the normally opened contact (K1) of contactor (2-2) and is communicated with, one end of No. two resistors (2-4) is held with the B of BY winding by the normally opened contact (K1) of contactor (2-2) and is communicated with, one end of No. three resistors (2-5) is held with the C of CZ winding by the normally opened contact (K1) of contactor (2-2) and is communicated with, 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, B end and the C of CZ winding of BY winding hold be connected to contactor (2-2) simultaneously normally-closed contact (K2) on, 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 one, controller and port initialization; Step 2, setting are a bit larger tham the variate-value MT of zero; Step 3, from P0.0 mouth output duty cycle be the pwm control signal of D; Step 4, get generator tachogenerator data from analog input mouth AIN0; Step 5, judge whether its rate of change is greater than MT, is, then perform step 6, no, then perform step 5; Step 6, from P0.1 mouth export high level; Step 7, judge whether the AIN0 rate of change that fetches data is zero, no, then perform step 6, be, then perform step 8; Step 8, from P0.1 mouth output low level; Step 9, judge whether continue, be then perform step 5, no, then terminate.
2. according to claim 1 from the electronic device of variable-resistance started wound rotor, it is characterized in that, generator tachogenerator (S) adopts 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 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.
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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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| 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 CN103390980A (en) | 2013-11-13 |
| CN103390980B true CN103390980B (en) | 2016-02-03 |
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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 |
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| Publication number | Publication date |
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| CN103390980A (en) | 2013-11-13 |
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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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