Silicon controlled rectifier detection device and method
A technology for detecting circuits and triggering signals, applied in measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as compressor burnout and load damage
Active Publication Date: 2018-12-07
MOSO POWER SUPPLY TECH
View PDF9 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, if power switching devices such as triacs are not quickly detected and correct protective measures are taken when they fail, it will cause major damage to the load in the circuit. For example, when using a triac to power a compressor When starting and variable speed control, if the diode failure mode occurs, the triac is equivalent to a diode, and the DC component in the compressor winding will cause the compressor to overheat and burn out through the damaged triac
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0045] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0046]It should also be understood that the terminology used i...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a silicon controlled rectifier work state detection device and method. The device comprises a driving circuit, a terminal voltage detection circuit and a processor; both the driving circuit and the detection circuit are connected with the processor; the driving circuit generates a trigger signal under control of the processor, and controls conduction of a bidirectional silicon controlled rectifier; the terminal voltage detection circuit detects a terminal voltage between first and second anodes of the bidirectional silicon controlled rectifier, and outputs a level signal according to the terminal voltage; and the processor determines whether to generate the trigger signal according to the level signal and the driving circuit, and identifies a work state, including ashort circuit state, a diode mode and an open circuit state, of the bidirectional silicon controlled rectifier. Whether the trigger circuit for triggering conduction of the bidirectional silicon controlled rectifier is generated and the terminal voltage of the two ends of the bidirectional silicon controlled rectifier is detected, so that the work state of the bidirectional silicon controlled rectifier can be identified, alarm is raised when the bidirectional silicon controlled rectifier has a fault, and the circuit safety is protected.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a thyristor detection device and detection method. Background technique [0002] Power switching devices such as bidirectional thyristors are widely used in control fields such as industrial control and home appliance control. However, if power switching devices such as triacs are not quickly detected and correct protective measures are taken when they fail, it will cause major damage to the load in the circuit. For example, when using a triac to power a compressor When starting and variable speed control, if the diode failure mode occurs, the triac is equivalent to a diode, and the DC component in the compressor winding will cause the compressor to overheat and burn out through the damaged triac. Therefore, real-time detection of the working status of power switching devices such as triacs has important practical application value. Contents of the invention [0003...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/3277
Inventor 戴训江
Owner MOSO POWER SUPPLY TECH