CN1945956A - Low voltage AC soft starting method - Google Patents
Low voltage AC soft starting method Download PDFInfo
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- CN1945956A CN1945956A CN 200610053993 CN200610053993A CN1945956A CN 1945956 A CN1945956 A CN 1945956A CN 200610053993 CN200610053993 CN 200610053993 CN 200610053993 A CN200610053993 A CN 200610053993A CN 1945956 A CN1945956 A CN 1945956A
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Abstract
This invention relates to a control method for belt transporting machines, especially to a low voltage AC soft start up method used in mines with methane and explosive grimes.
Description
Technical field
The present invention relates to a kind of belt conveyor control method, especially a kind of low voltage AC soft starting method.
Background technology
Machine tradition start mode has self-coupling decompression, and limit Δ decompression and the decompression of string reactor are prolonged in the decompression of Y/ Δ, and be promptly magnet controlled.Control circuit is simple, and starting torque is non-adjustable and the secondary pulse electric current is arranged, and load is had impact torque.Decline may cause stall as line voltage, and aforesaid way is snap action when shutting down, as does not have mechanical buffer unit and can cause damage to relevant device.
Summary of the invention
The objective of the invention is to make belt conveyor can realize the low voltage AC soft starting method of soft start in order to provide a kind of being used for to have in the mine of methane and explosive coal dust.
For realizing purpose of the present invention, this specification provides a kind of low voltage AC soft starting method, and being used for has in the mine of methane and explosive coal dust, makes belt conveyor can realize soft start.During starting with soft start equipment downtime, parameter initialization; By the user parameter is set according to actual needs; Between three phase mains and motor, seal in three thyristors that link; Utilize thyristor phase shifting control principle, motor terminal voltage rises from zero gradually with the angle of flow of thyristor during starting, and motor speed increases gradually, finishes starting process until reaching the requirement of satisfying starting torque; This moment, bypass contactor was connected, and motor enters the steady operation state; Cut off earlier bypass contactor during parking, then by the thyristor angle of flow in the soft starter by reducing greatly gradually, three phase supply voltage is reduced gradually, motor speed is by being reduced to zero greatly gradually.
Parameter is set comprises, select starting voltage between 10% to 100%, select start mode and auxiliary starter mode, between 10A to 400A, select the motor rated current, between 60 seconds, selected down time, between 60 seconds, selected the starting time at 0 second at 0 second.
Described start mode can be selected current limit starting, selectional restriction electric current between 100% to 550%; Described start mode can be selected starting on hill.
During voltage ramp soft-start mode actuating motor, the voltage of soft starter rises to U1 fast, rises gradually in the time t that sets then, and motor reaches rated voltage and rated speed along with the rising of voltage is constantly quickened.
During current limit starting mode actuating motor, the output voltage of soft starter increases sharply, and reaches limit value up to output current, keep output current to be not more than this value, voltage progressively raises, and motor is quickened, when reaching rated voltage, rated speed, output current is dropped rapidly to rated current.
During slope current limit starting mode actuating motor, output voltage steadily rose in the time of setting, and output current increases with certain speed simultaneously, and when starting current increased to limit value, holding current was constant.
When stopping motor under the soft stop mode, the output voltage of motor progressively is reduced to zero by in rated voltage is between the soft stopping time of setting.
This low voltage AC soft starting method is simple and convenient, can press actual needs and select suitable pattern, has protected belt conveyor not to be subjected to cranking current pulse easily.
Purpose of the present invention, feature and advantage will be in conjunction with the embodiments, are further described with reference to accompanying drawing.
Description of drawings
Fig. 1 is the voltage ramp Soft Start-up Process Parameter Map among the present invention;
Fig. 2 is the current limit starting procedure parameter figure among the present invention;
Fig. 3 is the slope current limit starting procedure parameter figure among the present invention;
Fig. 4 is the soft stop procedure parameter figure among the present invention;
Fig. 5 is the ramp voltage starting software flow pattern among the present invention;
Fig. 6 is the current limit starting software flow pattern among the present invention.
Embodiment
With reference to last figure, provide following embodiment.To help to understand the present invention by embodiment, but not limit content of the present invention.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
This low voltage AC soft starting method is used for having in the mine of methane and explosive coal dust, makes belt conveyor can realize soft start.During starting with soft start equipment downtime, parameter initialization; By the user parameter is set according to actual needs; Between three phase mains and motor, seal in three thyristors that link; Utilize thyristor phase shifting control principle, motor terminal voltage rises from zero gradually with the angle of flow of thyristor during starting, and motor speed increases gradually, finishes starting process until reaching the requirement of satisfying starting torque; This moment, bypass contactor was connected, and motor enters the steady operation state; Cut off earlier bypass contactor during parking, then by the thyristor angle of flow in the soft starter by reducing greatly gradually, three phase supply voltage is reduced gradually, motor speed is by being reduced to zero greatly gradually.
Parameter is set comprises, select starting voltage between 10% to 100%, select start mode and auxiliary starter mode, between 10A to 400A, select the motor rated current, between 60 seconds, selected down time, between 60 seconds, selected the starting time at 0 second at 0 second.
Described start mode can be selected current limit starting, selectional restriction electric current between 100% to 550%; Described start mode can be selected starting on hill.
During voltage ramp soft-start mode actuating motor, the voltage of soft starter rises to U1 fast, rises gradually in the time t that sets then, and motor is along with the rising of voltage is constantly quickened, and when reaching rated voltage and rated speed, starting process is finished.
During current limit starting mode actuating motor, the output voltage of soft starter increases sharply, reach limit value up to output current, keep output current to be not more than this value, voltage progressively raises, and motor is quickened, when reaching rated voltage, rated speed, output current is dropped rapidly to rated current, and starting process is finished.This mode is used for some load motor that needs Fast starting.
During slope current limit starting mode actuating motor, output voltage steadily rose in the time of setting, and output current increases with certain speed simultaneously, when starting current increases to limit value, holding current is constant, finishes this mode until starting and is applicable to pump class and fan-type load motor.
When stopping motor under the soft stop mode, the output voltage of motor progressively is reduced to zero in rated voltage is between the soft stopping time of setting, and docking process is finished.This mode is usually used in the water pump load, and it has successfully solved " water hammer " phenomenon in traditional docking process, and promptly instantaneous stop causes the acute variation of fluid original state, causes the impact of fluid to pipeline.
Sync break handling procedure and software timer interrupt handling routine are finished jointly to the triggering of 6 thyristor pulses with correct order, make the contactor closure after starting finishes, and the processing action under the various fault etc.Interrupt handling routine can be selected current limit starting, ramp voltage starting according to the start mode of keyboard input.
Claims (7)
1, a kind of low voltage AC soft starting method is used for having in the mine of methane and explosive coal dust, makes belt conveyor can realize soft start, it is characterized in that: during starting with soft start equipment downtime, parameter initialization; By the user parameter is set according to actual needs; Between three phase mains and motor, seal in three thyristors that link; Utilize thyristor phase shifting control principle, motor terminal voltage rises from zero gradually with the angle of flow of thyristor during starting, and motor speed increases gradually, finishes starting process until reaching the requirement of satisfying starting torque; This moment, bypass contactor was connected, and motor enters the steady operation state; Cut off earlier bypass contactor during parking, then by the thyristor angle of flow in the soft starter by reducing greatly gradually, three phase supply voltage is reduced gradually, motor speed is by being reduced to zero greatly gradually.
2, soft-start method according to claim 1, it is characterized in that: the described parameter that is provided with comprises, select starting voltage between 10% to 100%, select start mode and auxiliary starter mode, between 10A to 400A, select the motor rated current, between 60 seconds, selected down time at 0 second, between 60 seconds, selected the starting time at 0 second.
3, soft-start method according to claim 2 is characterized in that: described start mode can be selected current limit starting, selectional restriction electric current between 100% to 550%; Described start mode can be selected starting on hill.
4, soft-start method according to claim 3, it is characterized in that: during described voltage ramp soft-start mode actuating motor, the voltage of soft starter rises to U1 fast, in the time t that sets, rise gradually then, motor reaches rated voltage and rated speed along with the rising of voltage is constantly quickened.
5, soft-start method according to claim 3, it is characterized in that: during described current limit starting mode actuating motor, the output voltage of soft starter increases sharply, reach limit value up to output current, keep output current to be not more than this value, voltage progressively raises, and motor is quickened, when reaching rated voltage, rated speed, output current is dropped rapidly to rated current.
6, soft-start method according to claim 3, it is characterized in that: during the current limit starting mode actuating motor of described slope, output voltage steadily rose in the time of setting, and output current increases with certain speed simultaneously, when starting current increased to limit value, holding current was constant.
7, soft-start method according to claim 3 is characterized in that: when stopping motor under the described soft stop mode, the output voltage of motor progressively is reduced to zero by in rated voltage is between the soft stopping time of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610053993 CN1945956A (en) | 2006-10-27 | 2006-10-27 | Low voltage AC soft starting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610053993 CN1945956A (en) | 2006-10-27 | 2006-10-27 | Low voltage AC soft starting method |
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| CN1945956A true CN1945956A (en) | 2007-04-11 |
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| CN 200610053993 Pending CN1945956A (en) | 2006-10-27 | 2006-10-27 | Low voltage AC soft starting method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572522B (en) * | 2009-03-02 | 2011-10-19 | 卞光辉 | Fool type self-learning motor soft on-off control device |
| CN102291061A (en) * | 2011-08-25 | 2011-12-21 | 安徽鑫龙电器股份有限公司 | Braking method of soft starter |
| CN102294293A (en) * | 2011-06-13 | 2011-12-28 | 上海市东方海事工程技术有限公司 | Starting control method, system and equipment of coal pulverizer |
| CN101585324B (en) * | 2008-05-23 | 2013-02-20 | 李尔公司 | A motor vehicle electric motor speed control system |
| CN103814516A (en) * | 2011-09-13 | 2014-05-21 | 施耐德电器工业公司 | Method for controlling controlled switch operating power supply of electric motor |
| CN105680730A (en) * | 2016-03-17 | 2016-06-15 | 株洲变流技术国家工程研究中心有限公司 | Motor start control method with soft starter |
| CN107070365A (en) * | 2017-04-28 | 2017-08-18 | 麦克维尔空调制冷(武汉)有限公司 | Current limit control method under a kind of solid-state soft initiator voltage ramp control model |
| CN107769662A (en) * | 2017-11-13 | 2018-03-06 | 苏州艾克威尔科技有限公司 | The control method of asynchronous machine |
| CN117559845A (en) * | 2024-01-09 | 2024-02-13 | 广州市百福电气设备有限公司 | Starting control method and system for water pump motor |
-
2006
- 2006-10-27 CN CN 200610053993 patent/CN1945956A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585324B (en) * | 2008-05-23 | 2013-02-20 | 李尔公司 | A motor vehicle electric motor speed control system |
| CN101572522B (en) * | 2009-03-02 | 2011-10-19 | 卞光辉 | Fool type self-learning motor soft on-off control device |
| CN102294293A (en) * | 2011-06-13 | 2011-12-28 | 上海市东方海事工程技术有限公司 | Starting control method, system and equipment of coal pulverizer |
| CN102291061A (en) * | 2011-08-25 | 2011-12-21 | 安徽鑫龙电器股份有限公司 | Braking method of soft starter |
| CN102291061B (en) * | 2011-08-25 | 2013-10-30 | 安徽鑫龙电器股份有限公司 | Braking method of soft starter |
| CN103814516B (en) * | 2011-09-13 | 2017-04-12 | 施耐德电器工业公司 | Method for controlling controlled switch operating power supply of electric motor |
| CN103814516A (en) * | 2011-09-13 | 2014-05-21 | 施耐德电器工业公司 | Method for controlling controlled switch operating power supply of electric motor |
| CN105680730A (en) * | 2016-03-17 | 2016-06-15 | 株洲变流技术国家工程研究中心有限公司 | Motor start control method with soft starter |
| CN105680730B (en) * | 2016-03-17 | 2018-08-03 | 株洲变流技术国家工程研究中心有限公司 | A kind of motor starting control method with soft strater |
| CN107070365A (en) * | 2017-04-28 | 2017-08-18 | 麦克维尔空调制冷(武汉)有限公司 | Current limit control method under a kind of solid-state soft initiator voltage ramp control model |
| CN107769662A (en) * | 2017-11-13 | 2018-03-06 | 苏州艾克威尔科技有限公司 | The control method of asynchronous machine |
| CN107769662B (en) * | 2017-11-13 | 2020-04-21 | 苏州艾克威尔科技有限公司 | Control method of asynchronous motor |
| CN117559845A (en) * | 2024-01-09 | 2024-02-13 | 广州市百福电气设备有限公司 | Starting control method and system for water pump motor |
| CN117559845B (en) * | 2024-01-09 | 2024-04-26 | 广州市百福电气设备有限公司 | Starting control method and system for water pump motor |
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