CN213367668U - Contactless motor control system - Google Patents
Contactless motor control system Download PDFInfo
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- CN213367668U CN213367668U CN202022502922.6U CN202022502922U CN213367668U CN 213367668 U CN213367668 U CN 213367668U CN 202022502922 U CN202022502922 U CN 202022502922U CN 213367668 U CN213367668 U CN 213367668U
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- reversing
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Abstract
A contactless motor control system comprises a motor operation loop, a reversing control loop and a voltage-regulating starting loop; the input end of the motor operation loop is correspondingly connected with the power supply through the reversing control loop, and the output end of the motor operation loop is connected with the voltage-regulating starting loop; the reversing control loop comprises two contactless reversing controllers and a control switch which are connected in parallel, the power supply input ends of the two contactless controllers are connected with a power supply through the control switch, and the power supply output ends of the two contactless controllers are correspondingly connected with the motor operation loop; the voltage regulation starting circuit comprises a speed regulation resistor and a corresponding non-contact cut resistance controller, the speed regulation resistor is formed by connecting a plurality of resistors in series, one end of the speed regulation resistor is correspondingly connected with a motor of the motor operation circuit, the other end of the speed regulation resistor is correspondingly connected with the non-contact cut resistance controller, and the control system can ensure the safe and stable operation of the crane.
Description
Technical Field
The utility model belongs to the technical field of motor control system technique and specifically relates to a contactless motor control system is related to.
Background
As is known, a crane motor usually needs to be frequently operated for reversing when in operation, the reversing of the motor is controlled by a contactor, and in addition, a crane suspended load object is generally heavy, so that the crane needs the motor to provide a large torque when in suspended load operation; however, the contactor is frequently switched on and off during working, and frequent switching can cause the contact or coil of the contactor to be adhered, so that the contactor fails and normal work of the crane is affected, and therefore, the contactor needs to be replaced periodically, and resource waste and cost increase are caused; in summary, there is a need in the market for a motor control system that operates stably.
Disclosure of Invention
In order to overcome the deficiency in the background art, the utility model discloses a contactless motor control system.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a contactless motor control system comprises a motor operation loop, a reversing control loop and a voltage-regulating starting loop; the input end of the motor operation loop is correspondingly connected with the power supply through the reversing control loop, and the output end of the motor operation loop is connected with the voltage-regulating starting loop; the reversing control circuit comprises two contactless reversing controllers and a control switch which are connected in parallel, the power supply input ends of the two contactless reversing controllers are connected with a power supply through the control switch, and the power supply output ends of the two contactless reversing controllers are correspondingly connected with the motor operation circuit; the voltage-regulating starting circuit comprises a speed-regulating resistor and a corresponding contactless cut-off resistor controller, wherein the speed-regulating resistor is formed by connecting a plurality of sections of resistors in series, one end of the speed-regulating resistor is correspondingly connected with a motor of the motor operation circuit, and the other end of the speed-regulating resistor is correspondingly connected with the contactless cut-off resistor controller;
preferably, the motor operation loop is provided with two synchronous motors arranged in parallel;
preferably, the contactless reversing controller and the contactless cut resistance controller are both silicon controlled controllers;
preferably, the control switch is a single-pole double-throw switch;
preferably, two contactless cutting resistance controllers are connected in parallel.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a contactless motor control system, which effectively prolongs the service life of the control system by using a contactless reversing controller and a contactless cutting resistance controller, improves the reliability and the safety of the control system, and further reduces the possibility of the system breaking down; in addition, the reliability of the reversing loop can be further enhanced through the two contactless reversing controllers, and when one of the contactless reversing controllers breaks down, the crane can continue to normally operate by switching to the other contactless reversing controller.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a motor operation loop; 2. a commutation control loop; 2.1, a contactless reversing controller; 2.2, controlling a switch; 3. a voltage regulating start-up loop; 3.1, a speed regulating resistor; 3.2, a contactless cut resistance controller.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The contactless motor control system described with reference to fig. 1 comprises a motor operation loop 1, a reversing control loop 2 and a voltage-regulating starting loop 3; the input end of the motor operation loop 1 is correspondingly connected with a power supply through a reversing control loop 2, and the output end of the motor operation loop 1 is connected with a voltage-regulating starting loop 3; the reversing control loop 2 comprises two contactless reversing controllers 2.1 and a control switch 2.2 which are connected in parallel, the power input ends of the two contactless reversing controllers 2.1 are connected with a power supply through the control switch 2.2, and the on-off of the two contactless reversing controllers 2.1 can be switched through the control switch 2.2, so that only one contactless reversing controller 2.1 works in the normal running process of the crane, and particularly, the control switch 2.2 is a single-pole double-throw switch, so that the crane is economical and practical and has higher reliability; the power output ends of the two contactless reversing controllers 2.1 are correspondingly connected with the motor operation loop 1, the positive and negative rotation of the motor in the motor operation loop 1 can be controlled by using the contactless reversing controllers 2.1, and two control means of the reversing control loop 2 are provided by the two contactless reversing controllers 2.1, so that even if one contactless reversing controller 2.1 fails, the operation of the crane can be immediately switched to the operation of the other contactless reversing controller 2.1, and the operation of the crane cannot be influenced; the voltage-regulating starting circuit 3 comprises a speed-regulating resistor 3.1 and a corresponding non-contact cut-off resistor controller 3.3, the speed-regulating resistor 3.1 is formed by connecting a plurality of resistors in series, one end of the speed-regulating resistor 3.1 is correspondingly connected with a motor of the motor running circuit 1, the other end of the speed-regulating resistor 3.1 is correspondingly connected with the non-contact cut-off resistor controller 3.3, and the non-contact cut-off resistor controller 3.3 is used for controlling the on-off of the plurality of resistors in the speed-regulating resistor 3.1, so that the voltage of the motor during starting is adjusted, the corresponding motor rotating speed is adjusted, and the motor running circuit 1 is provided with two synchronous motors which are arranged; in addition, by using the contactless reversing controller 2.1 and the contactless cut resistance controller 3.3, the service life of the control system can be effectively prolonged, the reliability and the safety of the control system are improved, the possibility of the system breaking down is further reduced, and the contactless phase-change controller 2.1 and the contactless cut resistance controller 3.3 are both set to be two, namely, the redundant backup of the system is realized, the stable operation capability of the system is further improved, in addition, the contactless reversing controller 2.1 and the contactless cut resistance controller 3.3 are both silicon controlled controllers, and the stability of the control system is ensured.
The part of the utility model not detailed is prior art.
Claims (5)
1. A contactless motor control system is characterized in that: comprises a motor operation loop (1), a reversing control loop (2) and a voltage-regulating starting loop (3); the input end of the motor operation loop (1) is correspondingly connected with a power supply through the reversing control loop (2), and the output end of the motor operation loop (1) is connected with the voltage regulating starting loop (3); the reversing control loop (2) comprises two contactless reversing controllers (2.1) and a control switch (2.2) which are connected in parallel, the power supply input ends of the two contactless controllers are connected with a power supply through the control switch (2.2), and the power supply output ends of the two contactless controllers are correspondingly connected with the motor operation loop (1); the voltage regulation starting circuit (3) comprises a speed regulation resistor (3.1) and a corresponding non-contact cut resistance controller (3.3), the speed regulation resistor (3.1) is formed by connecting a plurality of resistors in series, one end of the speed regulation resistor (3.1) is correspondingly connected with a motor of the motor operation circuit (1), and the other end of the speed regulation resistor (3.1) is correspondingly connected with the non-contact cut resistance controller (3.3).
2. The contactless motor control system according to claim 1, characterized in that: the motor operation loop (1) is provided with two synchronous motors which are arranged in parallel.
3. The contactless motor control system according to claim 1, characterized in that: the contactless reversing controller (2.1) and the contactless cut resistance controller (3.3) are both silicon controlled controllers.
4. The contactless motor control system according to claim 1, characterized in that: the control switch (2.2) is set as a single-pole double-throw switch.
5. The contactless motor control system according to claim 1, characterized in that: two contactless cutting resistance controllers (3.3) are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022502922.6U CN213367668U (en) | 2020-11-03 | 2020-11-03 | Contactless motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022502922.6U CN213367668U (en) | 2020-11-03 | 2020-11-03 | Contactless motor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213367668U true CN213367668U (en) | 2021-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022502922.6U Active CN213367668U (en) | 2020-11-03 | 2020-11-03 | Contactless motor control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213367668U (en) |
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2020
- 2020-11-03 CN CN202022502922.6U patent/CN213367668U/en active Active
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