CN104362905A - Double speed motor soft starter and control method thereof - Google Patents
Double speed motor soft starter and control method thereof Download PDFInfo
- Publication number
- CN104362905A CN104362905A CN201410690021.0A CN201410690021A CN104362905A CN 104362905 A CN104362905 A CN 104362905A CN 201410690021 A CN201410690021 A CN 201410690021A CN 104362905 A CN104362905 A CN 104362905A
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- 239000007858 starting material Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 13
- 239000003999 initiator Substances 0.000 claims description 20
- 230000006870 function Effects 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007659 motor function Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/32—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by star/delta switching
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention discloses a double speed motor soft starting circuit. A power source is connected with a soft starter which is connected with a motor through a power supply circuit provided with a contactor KM1, the soft starter and the motor are in star connection through a circuit provided with a contactor KM3 and a power supply line, and the soft starter and the motor are in triangular connection through a circuit provided with a contactor KM2 and the power supply line. The double speed motor soft starting circuit comprises two start-stop command terminals which control a high-speed state and a low-speed state of the motor respectively, a complex secondary connection loop is not needed, complete program control is adopted, and safety and reliability are achieved; a program has two sets of different setting parameters which correspond to the high-speed state and the low-speed state of the motor respectively, start and stop of motors of different powers can be achieved, and a soft stop function of the motors can be achieved.
Description
Technical field
The present invention relates to the soft starter for Electric Machine Control equipment, particularly relate to a kind of soft initiator and the control method thereof with double-speed motor control.
Background technology
Soft initiator is a kind of Electric Machine Control equipment integrating soft start, soft stop, light-load energy saving and multifunction protection.Realize starter motor level and smooth without impacting in whole start-up course, and the various parameters in start-up course can be regulated according to the characteristic of motor load, as cut-off current, start-up time etc.
Soft initiator is mainly made up of the three-phase inverse parallel brake tube be serially connected with between power supply and controlled motor and electronic control circuit thereof.Using specific control algolithm, control the angle of flow of three-phase inverse parallel brake tube, the input voltage of controlled motor is changed by different requirements, just can realizing the function smoothly started without impacting of motor.
Existing soft initiator is only the design of electrical motor determined for a parameter; if need to utilize existing soft initiator to realize controlling double-speed motor function; need two soft initiators and need to carry out complicated secondary circuit control design case; because the starting voltage of starting process; starting current; peak current is protected, and over-and under-voltage etc. need to arrange.
Summary of the invention
Technical problem to be solved by this invention realizes a kind of soft initiator and the control method thereof with double-speed motor control, makes soft initiator have double-speed motor control and defencive function with lower production cost, simple external cabling.
To achieve these goals, the technical solution used in the present invention is: a kind of double-speed motor soft starting circuit, power supply connects soft starter, soft starter connects motor through the supply line containing contactor KM1, form star connection by the circuit containing contactor KM3 and supply line between described soft starter and motor, between described soft starter and motor, form delta connection by the circuit containing contactor KM2 and supply line.
The control unit of described soft initiator has intake contact K1, K2, and described intake contact K1 control contactor KM1 and contactor KM2 break-make are fast mode, and described intake contact K2 control contactor KM1 and contactor KM3 break-make are low-speed mode.
Based on the control method of double-speed motor soft starting circuit, during startup, soft starter judges that whether starting command is effective, if effectively, after loading controling parameters, the contactor of closed fast mode or low-speed mode carries out startup control.
After having started, controller still works online and carries out motor protection control, if there is fault, disconnects the amount of outputing and carries out fault alarm.
When needs soft stop, first judge that whether halt command is effective, if effectively, realize soft stop after being loaded into controling parameters and control, shut down rear disconnection contactor.
The invention has the advantages that 1, have two start stop command terminals, control high speed, the lower-speed state of a motor respectively; 2, without the need to the secondary connection loop of complexity, complete program control, safe and reliable; 3, program has the different parameters of two covers, correspond to the high speed of a motor, lower-speed state respectively, can realize the start and stop of different capacity motor; 4, the soft stop function of motor can be realized respectively.
Accompanying drawing explanation
Below the content that width accompanying drawing every in specification of the present invention is expressed is briefly described:
Fig. 1 is the circuit diagram of the soft initiator of double-speed motor controlling functions;
Fig. 2 is the circuit diagram of the soft initiator control terminal of double-speed motor controlling functions;
Fig. 3 is the circuit diagram of the soft initiator secondary connection of double-speed motor controlling functions;
Fig. 4 is the flow chart of the soft initiator start-up routine of double-speed motor controlling functions;
Fig. 5 is the flow chart of the soft initiator soft stop program of double-speed motor controlling functions;
Embodiment
As Figure 1-3, the soft starter input of double-speed motor soft starting circuit connects power supply, output connects motor, output is supply line and is provided with the contactor KM1 of control circuit break-make, star connection is formed by the circuit containing contactor KM3 and supply line between soft starter and motor, namely being star connection when contactor KM1, KM3 closes, is now low-speed mode; Form delta connection by the circuit containing contactor KM2 and supply line between soft starter and motor, being delta connection when namely KM1, KM2 close, is now high speed fast mode; The control unit of soft initiator controls soft, soft stop operation that intake contact K1, K2 control high speed, slowspeed machine respectively as required respectively.
Soft initiator, without the need to the startup stop botton connection in series-parallel by the auxiliary contact of contactor and soft initiator, enormously simplify the complexity of secondary connection, reduces the workload of designer, improve the reliability of device.
Control method based on above-mentioned double-speed motor soft starting circuit is as follows:
As shown in Figure 4; after system electrification; judge that whether starting command (K1, K2) is effective; after loading controling parameters, closed high speed, low speed control contactor (KM1, KM2, KM3) carry out startup and control; after having started, controller still works online and carries out motor protection control.
As shown in Figure 5, during soft stop, first judge that whether halt command (K1, K2) is effective, realize soft stop after input control parameter and control.Soft stop terminates rear disconnection contactor (KM1, KM2, KM3).
In control method when starting command is effective, at a high speed, low speed parameter only has a set of controling parameters limited, and when K1, K2 are simultaneously closed, software is judged as malfunction.KM1, KM2, KM3 are failure to actuate.
The lower-speed state that the closed amount of outputing 1X:03,1X:04 and 1X:07 of control method, 1X:08 realize motor controls; The fast state that the closed amount of outputing 1X:03,1X:04 and 1X:05,1X:06 realize motor controls; These two amounts of outputing of 1X:05,1X:06 and 1X:07,1X:08 are not allowed simultaneously effectively.
The present invention, mainly for the soft initiator design with double-speed motor controlling functions, has two start stop command terminals, controls a motor fast state, lower-speed state start and stop respectively, without the need to the secondary connection loop of complexity, and complete program control, safe and reliable.Program has the different parameters of two covers, correspond to the fast state of a motor, lower-speed state respectively, can realize the start and stop of different capacity motor.And the soft stop function of motor can be realized respectively.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (5)
1. a double-speed motor soft starting circuit, power supply connects soft starter, soft starter connects motor through the supply line containing contactor KM1, it is characterized in that: between described soft starter and motor, form star connection by the circuit containing contactor KM3 and supply line, between described soft starter and motor, form delta connection by the circuit containing contactor KM2 and supply line.
2. double-speed motor soft starting circuit according to claim 1, it is characterized in that: the control unit of described soft initiator has intake contact K1, K2, described intake contact K1 control contactor KM1 and contactor KM2 break-make are fast mode, and described intake contact K2 control contactor KM1 and contactor KM3 break-make are low-speed mode.
3. the control method based on double-speed motor soft starting circuit described in claim 1 or 2, it is characterized in that: during startup, soft starter judges that whether starting command is effective, if effectively, after loading controling parameters, the contactor of closed fast mode or low-speed mode carries out startup control.
4. the control method of double-speed motor soft starting circuit according to claim 3, is characterized in that: after having started, and controller still works online and carries out motor protection control, if there is fault, disconnects the amount of outputing and carries out fault alarm.
5. the control method of the double-speed motor soft starting circuit according to claim 3 or 4; it is characterized in that: when needs soft stop; first judge that whether halt command is effective, if effectively, realize soft stop after being loaded into controling parameters and control, shut down rear disconnection contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690021.0A CN104362905A (en) | 2014-11-25 | 2014-11-25 | Double speed motor soft starter and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690021.0A CN104362905A (en) | 2014-11-25 | 2014-11-25 | Double speed motor soft starter and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104362905A true CN104362905A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410690021.0A Pending CN104362905A (en) | 2014-11-25 | 2014-11-25 | Double speed motor soft starter and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104362905A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026782A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Control line for soft starting of double-speed motor |
| CN106026783A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control method for soft starting of double-speed motor |
| CN106026785A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control line for soft starting of double-speed motor |
| CN106026784A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control device for soft starting of double-speed motor |
| CN106059395A (en) * | 2016-06-25 | 2016-10-26 | 黄志强 | Soft-starting control device for double-speed motor |
| CN106100454A (en) * | 2016-06-25 | 2016-11-09 | 黄志强 | Double-speed motor soft start control method |
| CN108468643A (en) * | 2018-05-18 | 2018-08-31 | 麦克维尔空调制冷(武汉)有限公司 | It can determine the screw compressor capacity control system and method for the operation of frequency speed-changing |
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| CN2443530Y (en) * | 2000-09-30 | 2001-08-15 | 卢培铨 | Double protecting system controller for motor |
| CN201039053Y (en) * | 2007-04-17 | 2008-03-19 | 太原惠特科技有限公司 | Soft starter for dual-speed motor start |
| CN202334403U (en) * | 2011-11-22 | 2012-07-11 | 昆山市五洲电子电器设备厂 | Motor start-up control device |
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-
2014
- 2014-11-25 CN CN201410690021.0A patent/CN104362905A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| CN2443530Y (en) * | 2000-09-30 | 2001-08-15 | 卢培铨 | Double protecting system controller for motor |
| CN201039053Y (en) * | 2007-04-17 | 2008-03-19 | 太原惠特科技有限公司 | Soft starter for dual-speed motor start |
| CN202334403U (en) * | 2011-11-22 | 2012-07-11 | 昆山市五洲电子电器设备厂 | Motor start-up control device |
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Non-Patent Citations (3)
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| 王海军等: "QJR-350/3.3S软启动器在刮板输送机上的应用", 《煤炭科学技术》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026782A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Control line for soft starting of double-speed motor |
| CN106026783A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control method for soft starting of double-speed motor |
| CN106026785A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control line for soft starting of double-speed motor |
| CN106026784A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control device for soft starting of double-speed motor |
| CN106059395A (en) * | 2016-06-25 | 2016-10-26 | 黄志强 | Soft-starting control device for double-speed motor |
| CN106100454A (en) * | 2016-06-25 | 2016-11-09 | 黄志强 | Double-speed motor soft start control method |
| CN108468643A (en) * | 2018-05-18 | 2018-08-31 | 麦克维尔空调制冷(武汉)有限公司 | It can determine the screw compressor capacity control system and method for the operation of frequency speed-changing |
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Application publication date: 20150218 |