Control method for preventing motor from being switched into short-circuit fault

A control method and short-circuit fault technology, applied in circuit devices, emergency protection circuit devices, electrical components, etc., can solve problems such as low voltage of power supply systems, economic losses of factories and enterprises, and motor insulation burning, and achieve the effect of ensuring safe operation.
CN103972865AInactive Publication Date: 2014-08-06BAOSTEEL STAINLESS STEEL
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BAOSTEEL STAINLESS STEEL
Publication Date
2014-08-06
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention belongs to the field of running control and discloses a control method for preventing a motor from being switched into a short-circuit fault. The control method includes that by improving a motor control loop and adopting double locking logic of switch quantity and analog quantity, after a spare power source automatic switch fails to lock, the motor can be effectively prevented from being mistakenly switched into the short-circuit fault; the motor can run safely and reliably to meet requirements of industrial and enterprise production under the circumstance that a spare power source power-losing automatic switch is enabled to act normally. The control method is safe, reliable, easy to implement and used for motor running, has a double locking function and can be widely used in the field of running control of the motors.
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Description

technical field

[0001] The invention belongs to the field of motor operation control, in particular to a control method for motor operation of an important production unit in a power supply system. Background technique

[0002] With the continuous development of industrial enterprises, the reliability requirements of the power supply system are getting higher and higher. In order to improve the reliability of power supply, manufacturers generally use two power supplies that can serve as backups for each other. The two power supplies (that is, the first power supply and the second power supply) are respectively connected to an independent bus section, the industry customarily calls these two power supplies a first-stage power supply and a second-stage power supply, and for these two independent busbar sections, it is usually customary to call them a first-stage busbar and a second-stage power supply. The two-section busbar (referred to as "one section" and "second section", t...

Claims

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