Unlock instant, AI-driven research and patent intelligence for your innovation.

Discharge control system, thyristor dimming phase angle detection circuit and method

A phase angle detection circuit and phase angle detection technology, applied in energy-saving control technology, electrical components, etc., can solve problems such as high cost and complex peripheral circuits, reduce system cost, save the number of chip pins, and simplify peripheral application circuits Effect

Active Publication Date: 2022-03-01
CRM ICBG (WUXI) CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a discharge control system, a silicon controlled rectifier dimming phase angle detection circuit and a method, which are used to solve the problems existing in the solution of controlling the discharge current in the prior art. High cost, complex peripheral circuits and other issues

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Discharge control system, thyristor dimming phase angle detection circuit and method
  • Discharge control system, thyristor dimming phase angle detection circuit and method
  • Discharge control system, thyristor dimming phase angle detection circuit and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Such as figure 2 As shown, this embodiment provides a thyristor dimming phase angle detection circuit 1, and the thyristor dimming phase angle detection circuit 1 includes:

[0076] A bus voltage detection module 11 , a first comparison module 12 , a conduction time signal generation module 13 , a digital filter module 14 , a second comparison module 15 and a reference voltage generation module 16 .

[0077] Such as figure 2 As shown, the bus voltage detection module 11 receives and detects the bus voltage Vin.

[0078] Specifically, in this embodiment, the bus voltage detection module 11 includes a third resistor R3 and a fourth resistor R4, and the third resistor R3 and the fourth resistor R4 are connected in parallel between the bus voltage Vin and Between the ground, the connection node of the third resistor R3 and the fourth resistor R4 outputs the detection voltage of the bus voltage.

[0079] Such as figure 2 As shown, the first comparison module 12 is con...

Embodiment 2

[0114] Such as Figure 5 As shown, the present embodiment provides a discharge control system, and the discharge control system includes:

[0115] The thyristor dimming phase angle detection circuit 1 and the discharge circuit 2 .

[0116] Such as Figure 5 As shown, the thyristor dimming phase angle detection circuit 1 detects the bus voltage Vin, obtains the conduction time signal Ton of the thyristor dimmer, and digitally filters the conduction time signal Ton to obtain the DC voltage Vb Compared with the bleed threshold voltage Bleed Set, the bleed control signal Bleed Control is obtained.

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

No PUM Login to View More

Abstract

The invention provides a discharge control system, a thyristor dimming phase angle detection circuit and a method, including: a bus voltage detection module; a first comparison module for generating a pulse width modulation signal; and generating a conduction time of a thyristor dimmer The conduction time signal generation module of the signal; the digital filter module for filtering the conduction time signal; the second comparison module for comparing the output voltage of the digital filter module with the discharge threshold voltage to generate a discharge control signal. When the DC voltage of the on-time signal is less than the discharge threshold voltage, a discharge current is generated; when the DC voltage of the on-time signal is greater than the discharge threshold voltage, the discharge current is turned off. The present invention uses a digital filter to integrate the phase angle detection circuit inside the chip, without external capacitors, which saves the number of chip pins and reduces system costs; at the same time, integrates the discharge circuit inside the chip to simplify peripheral application circuits; and the present invention can Dimming curves with different phase angles are set by the dimming control signal.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a discharge control system, a thyristor dimming phase angle detection circuit and a method. Background technique [0002] Thyristor is the abbreviation of silicon controlled rectifier element. It is a high-power semiconductor device with a four-layer structure of three PN junctions. It is generally composed of two thyristors connected in reverse. Its function is not only rectification, but also can be used as a non-contact switch to quickly turn on or off; to realize the inversion of direct current into alternating current; to change one frequency of alternating current into another frequency of alternating current and so on. SCRs, like other semiconductor devices, have the advantages of small size, high efficiency, good stability, and reliable operation. Its appearance has brought semiconductor technology from the field of weak electricity to the field of strong electri...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/325
CPCY02B20/40
Inventor 刘军吴泉清李亮
Owner CRM ICBG (WUXI) CO LTD