Check patentability & draft patents in minutes with Patsnap Eureka AI!

Voltage feedback single-stage power factor calibrating circuit

A technology of power factor correction and voltage feedback, applied in high-efficiency power electronic conversion, output power conversion devices, reactive power adjustment/elimination/compensation, etc., can solve the problems of miniaturization and rapid productization, and achieve simple control, Effects of cost reduction and simple circuit structure

Active Publication Date: 2009-03-25
INVENTRONICS HANGZHOU
View PDF0 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, problems such as how to reduce bus voltage, improve power factor, improve overall machine efficiency, and miniaturization caused by single-stage PFC still plague its rapid productization

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
  • Voltage feedback single-stage power factor calibrating circuit
  • Voltage feedback single-stage power factor calibrating circuit
  • Voltage feedback single-stage power factor calibrating circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Refer to attached figure 1 , The voltage feedback single-stage power factor correction circuit scheme one of the present invention, the voltage feedback single-stage power factor correction circuit includes a first rectifier, a second rectifier, a boost inductor La, a capacitor Cb, a transformer voltage feedback circuit, and a high-frequency switch tube Q1 and a transformer T1 with a center tap, characterized by:

[0024] The first rectifier includes a first diode D1 and a second diode D2, and forms a bridge rectifier circuit with the third diode D3 and the fourth diode D4 to rectify the input alternating current After the double-pulse direct current is transmitted to the positive terminal of the capacitor Cb, the capacitor Cb is precharged at startup to make the circuit fast and stable. After the circuit works stably, the reverse bias of the first diode D1 and the second diode D2 is cut off. The anodes of the first diode D1 and the second diode D2 are respectively con...

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 discloses a voltage feedback single stage power factor correcting circuit, which comprises a second rectifier, a boosting inductance, a capacitor, a transformer voltage feedback circuit, a high-frequency switch tube and a transformer with a centre tap. The input AC is transferred to the boosting inductance for charging after being rectified by the second rectifier circuit to double pulse DC; the boosting inductance transfers the output current of the second rectifier to the transformer with a centre tap, and transfers the power to the secondary side for outputting through the transformer; the capacitor is used for balancing the power, reducing the output ripple waves; and the transformer voltage feedback is used for coupling the bus voltage with the boosting inductance, so as to further limit over high bus voltage. The invention improves circuit efficiency, and has the advantages of simple structure, easy realization, low cost, low circuit loss, and the like.

Description

technical field [0001] The invention relates to a voltage feedback single-stage power factor correction circuit. More specifically, the present invention relates to a single-stage power factor correction circuit with center-tapped transformer voltage feedback, bridgeless rectification, and bypass power factor improvement. Background technique [0002] In recent years, international requirements for filtering of electrical equipment have become higher and higher, which has also prompted the rapid development of filtering technology and power factor correction technology. Among them, single-stage active PFC is particularly obvious. Internationally, single-stage PFC has become an emerging research hotspot, and domestic research has gradually shifted from research on single-stage PFC to product development and production. However, problems such as how to reduce the bus voltage, improve the power factor, improve the efficiency of the whole machine, and miniaturization caused by ...

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
IPC IPC(8): H02J3/18H02M1/42
CPCY02B70/126Y02E40/30Y02B70/10
Inventor 华桂潮吴新科邹剑华
Owner INVENTRONICS HANGZHOU
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com