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Fool type self-learning motor soft on-off control device

A start-stop control, self-learning technology, applied in motor generator control, motor generator/starter, control system, etc., can solve problems such as unfavorable customer management and maintenance, high technical support personnel overhead, and large power grid impact, etc. Achieve the effect of reducing customer management and maintenance costs, unmanned operation, and foolish use

Inactive Publication Date: 2009-11-04
卞光辉
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The three-phase squirrel-cage asynchronous motor is the most widely used motor in the market because of its simple structure, low cost and convenient use. However, when starting, if the rated voltage is directly applied, the starting current will be It reaches 8 to 100 times the rated current, and it will generate a very high current peak in an instant, which will have a very large impact on the power grid, and the resulting mechanical vibration will damage the motor rotor, shaft connector, intermediate gear, and load, etc.
However, due to the particularity of the principle of the motor, different powers, different loads, and different start-stop curves, it is difficult to use one or several mathematical models to realize its automatic operation, so that it can be fooled in field application control. Soft start and stop operation without manual intervention is more difficult
[0003] The solid-state motor starters usually called "soft starters" mostly adopt the slope voltage method with fixed slope, the constant current method and the combination of the two, and the slope + constant current method is realized. Due to the particularity of the principle, in order to achieve an ideal start-stop operation and fully adapt to the motor to be started and stopped, there are many parameters related to the start and stop of the motor, such as soft start mode, soft start voltage, soft start time, start rotation speed, etc. distance, current amplitude, soft stop time, soft stop voltage, etc., it must be designed as a completely open mode, and these parameters are debugged and set according to the specific control motor. Therefore, when the general product leaves the factory, it will be Add an additional parameter setting process to preset relevant parameters for a certain type of motor, which increases the production cost and wastes the configuration of resources; and the set standard is only set according to the type of fixed load
However, due to the wide range of motor applications and the relative technical difficulty in operating requirements, for some practical applications, it is often encountered that the motor parameter setting of the soft starter and stop does not match the load type, and debugging is required. In the case of lack of technical talents, the manufacturer can only provide professional technical debugging personnel to be responsible for technical debugging every time the product is used; and the open parameter design method will also bring follow-up maintenance problems to the use of the product. Customers who use unknown products will inadvertently modify the technical parameters originally set by the manufacturer, which is not conducive to customer management and maintenance, and also increases the maintenance cost of the manufacturer a lot
In this way, many manufacturers will face more problems such as high cost of technical support personnel, difficult training, and unreasonable optimization of resources, which consumes a lot of manpower and financial resources.
The present invention aims to solve the above problems, and can technically realize "fool-like" discrimination of load types, "self-learning" and "following" load changes, and provides an accurate technical parameter for the start and stop of the motor system; The application can be greatly simplified, and it truly realizes unmanned operation, foolish use, free debugging, and free maintenance. So far, there is no similar background technology in the field of motor soft start and soft stop control, and it has very important research and development. significance

Method used

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  • Fool type self-learning motor soft on-off control device
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  • Fool type self-learning motor soft on-off control device

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Embodiment Construction

[0018] Such as figure 1 As shown, the device of the present invention is connected in series between the power supply 1 and the motor 2, adopts three reverse-parallel semiconductor controllable rectifiers SCRs 3 as power components, and a high-speed central processing unit 4 controls the acquisition circuit to acquire motor parameters, including current acquisition 5, Voltage collection 6, phase sequence collection 7, synchronous signal collection 8 and power factor collection 9, etc., central processing unit 4 processes and analyzes according to the data sampled back, applies the phase shift technology of SCRs 3, controls the conduction angle of SCRs 3, makes The voltage added to the motor 2 gradually reaches the full voltage according to the calculation rule, and the 3 groups of different color LEDs in the display part 12 indicate the operating status of the system in real time, such as soft start, soft stop, fault alarm and other information, Make the system status clear at...

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Abstract

The invention discloses a fool type self-learning motor soft on-off control device, which can realize 'de-skilled' judgment of load types and 'self-learning' 'closely following' load to change, and provide correct technical parameters for the on and off of a motor system. When the device is used, parameters are unnecessary to set and operation is also unnecessary in the using process, the device is only connected to a power supply and a motor for use, and the device can achieve the optimal on-off control for the motor, realize de-skilled use, unmanned operation, debugging free and maintenance free of products in field application, reduce the cost of user management and maintenance, and save manpower, material resources and financial resources of manufacturers. The device is also provided with multiple motor protection and communication, can be configurable networked for work, has high adaptability to various motors, can be widely used in the industries such as agriculture, textile, metallurgy, petrochemical industry, water treatment, shipping, transportation, medicament, food processing, mining, mechanical equipment and the like, and has high application value and economic value.

Description

technical field [0001] The invention belongs to a motor soft start and soft stop control device, which is mainly used in asynchronous motors, and is specifically a fool-style self-learning motor soft start and stop control device, which adopts a full-digital fuzzy self-learning algorithm and has its own protection. Configure motor controls for networked operation. Background technique [0002] The three-phase squirrel-cage asynchronous motor is the most widely used motor in the market because of its simple structure, low cost and convenient use. However, when starting, if the rated voltage is directly applied, the starting current will be It reaches 8 to 100 times the rated current, and it will generate a very high current peak in an instant, which will have a very large impact on the power grid, and the resulting mechanical vibration will damage the motor rotor, shaft connector, intermediate gear, and load, etc. . Therefore, in general, the starting current and starting t...

Claims

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Application Information

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IPC IPC(8): H02P1/28H02P3/18
Inventor 卞光辉
Owner 卞光辉
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