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

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...

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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

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