Thyristor detecting method for semiconductor motor dicing resistance controller

Abstract

The invention provides a thyristor detecting method for a semiconductor motor dicing resistance controller. A main board is arranged; and a display board is arranged on the main board. A microprocessor and an acceleration controller are arranged at the main board; the microprocessor is connected with a power source and commercial power is provided for the microprocessor through the power source; and a fan driving circuit is connected to the microprocessor and the microprocessor is connected with and controls a fan through the fan driving circuit. A startup control signal detecting module is arranged at the microprocessor; the microprocessor is connected to the acceleration controller through a thyristor driving circuit; the acceleration controller is connected to the microprocessor througha thyristor state detecting module; and the acceleration controller is connected to the microprocessor through a voltage detecting circuit. According to the invention, a forward control input signaland a reverse control input signal are inputted simultaneously without conduction, so that simultaneous conduction is avoided and thus a sending short-circuit risk is prevented. Moreover, the accelerated contactor control is realized and the quality of an internal silicon controlled rectifier is measured additionally.

Description

technical field [0001] The invention relates to the technical field of crane motor control, in particular to a thyristor detection method of a semiconductor motor resistance cutting controller. Background technique [0002] A thyristor is a high-power semiconductor device with a four-layer structure of three PN junctions. The thyristor has the characteristics of small size, relatively simple structure, and strong function, and is one of the more commonly used semiconductor devices. The device is widely used in various electronic equipment and electronic products, and is mostly used for controllable rectification, inverter, frequency conversion, voltage regulation, non-contact switch, etc. Dimming lamps, speed-adjusting fans, air conditioners, televisions, refrigerators, washing machines, cameras, combined audio systems, sound and light circuits, timing controllers, toy devices, radio remote controls, cameras and industrial controls in household appliances are widely used T...

AI Technical Summary

Problems solved by technology

[0003] Although the thyristor is widely used, the fault detection method is limited. In the actual operation process, only the abnormal operation of the controlled equipment can be used to judge whether the thyristor is in a fault state, which is very unfavorable for the safe operation of electrical appliances. However, in actual operation, if the thyristor Damage or short circuit will directly affect the normal operation of electrical equipment, and even cause serious damage to electrical equipment. Therefore, timely detection of thyristors is very important

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