Self-coupling step-down compensation integrated soft start device

A soft start and self-coupling technology, applied to the starter of a single single-phase induction motor, motor generator/starter, etc., can solve the problems of excessive starting current and small size, and achieve fast response, small size, Smooth start-up performance

Active Publication Date: 2014-10-29
WUHAN UNIV
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  • Abstract
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AI Technical Summary

Benefits of technology

This new technology allows for better control over electrical devices such as electric motors or generators while reducing their power consumption compared to previous methods like solenoids. These improvements include reduced start up currents, less space needed, simpler construction without any leaks from other parts, improved efficiency at low temperatures, longer lifespan, easier manufacturing processes, etc., resulting in more reliable and efficient products that meet specifications set forth earlier.

Problems solved by technology

This patented technical problem addressed in this patents relates to developing an effective method or system that prevents damage to electricity grids due to rapid startup of electrical machines with multiple stages without causing any negative effects on their operation.

Method used

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Embodiment Construction

[0024] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0025] The invention includes a magnetic valve type controllable reactor, a thyristor excitation system, a controller and an additional parallel compensation capacitor bank. The invention couples the two functions of an autotransformer and a magnetic valve type controllable reactor together through circuit and magnetic circuit design, including a high-voltage side magnetic core, a low-voltage side magnetic core and a winding.

[0026] please see figure 1 , the technical solution adopted in the present invention is: an auto-coupling step-down compensation integr

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Abstract

The invention discloses a self-coupling step-down compensation integrated soft start device which couples the two functions of a self-coupling transformer and a magnetic-valve type controllable reactor together through an ingenious circuit and magnetic circuit design, and relates to the start-up of an extra-high/ultra-high capacity high-voltage motor. A high-voltage side magnetic core and a low-voltage side magnetic core are completely the same in structure, the high-voltage side magnetic core is composed of a first iron core, a second iron core and a first side yoke, a first coil and a second coil are wound on the first iron core, a third coil and a third coil are wound on the second iron core, and the other end of each of the first coil and the third coil is connected with the other end of each of the second coil and the fourth coil in parallel; one end of a high-voltage side winding is connected with the positive pole of an input power supply, the other end of the high-voltage side winding is connected with the input end of a low-voltage winding and accessed to one end of a motor, and the other end of the low-voltage side winding is connected with the negative pole of the power supply and the other end of the motor. The self-coupling step-down compensation integrated soft start device is capable of smoothly changing the impedances of a high-voltage side and a low-voltage side, low in start current, small in size, stable in start performance, fast in response speed, and long in service life.

Description

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Claims

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Application Information

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Owner WUHAN UNIV
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