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

Three-level soft switching device

A technology of soft switching and converter, which is applied in the direction of conversion equipment with intermediate conversion to AC, high-efficiency power electronic conversion, and climate sustainability. It can solve problems such as harmful effects on circuit performance, improve conversion efficiency, and minimize voltage stress. , The effect of reducing power consumption

Inactive Publication Date: 2005-10-19
DELTA ELECTRONICS INC
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, increased leakage inductance and / or additional external inductors have detrimental effects on circuit performance

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
  • Three-level soft switching device
  • Three-level soft switching device
  • Three-level soft switching device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Figure 4 A preferred preferred embodiment of the three-level soft-switching DC / DC converter according to the present invention is represented. Figure 4 The three-level commutation converter in includes: four primary switches S connected in series 1 to S 4 , rail-splitting capacitor C c1 and C C2 , the "crossover capacitor" C B1 and C B2 , the isolation transformer TR, and the coupled inductor L C . In this embodiment, the load is coupled to the converter via a full-wave rectifier connected to the center-tapped secondary of the transformer. In addition, the clamping diode D C1 and D C2 Used to switch S on the outside 1 and S 4 After being turned off, the outside switch S 1 and S 4 voltages are clamped to V IN / 2, while blocking capacitors C are used in the case of volt-second imbalances across transformer windings that may ultimately arise from circuit parasitics and mismatches in switching characteristics and timing signals B to prevent transformer satura...

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 three stage soft switching converter with frequency stabilization provides the condition of the zero voltage switching (ZVS) for all primary switches going to the on state at wide range of the input voltage and the output load. The converter uses minimum loss of the duty factor and circulating current to realize ZVS. The ZVS of the primary switches is realized by the energy stored on the inductor on the primary side of the insulating transformer. The inductor and the transformer are so arranged that the changes of the phase shift between the two pairs (outer and inner switch pairs in four cascading four switches) are in opposite direction. In same eexamples, the primary inductor is coupled with the inductor, which possesses two windings. But in other examples, the said inductor only possesses one winding.

Description

[0001] Cross References to Related Applications [0002] This application is filed on August 31, 2000 with the United States Patent and Trademark Office, Serial No. 09 / 652869, entitled "Soft-Switched Full-Bridge Converter," and filed on February 5, 2001 with the United States Patent and Trademark Office Continuation of Patent Application Serial No. 09 / 775636 entitled "Soft-Switched Full-Bridge Converter" of the Office. technical field [0003] The invention relates to a power converter, in particular to a high-voltage power converter. Background technique [0004] Typically, high voltage power conversion applications require switching elements with high voltage ratings because the voltage rating of a switch is determined by the input and / or output voltage of the converter. For example, in a conventional isolated buck converter, ie in a transformer isolated converter with an output voltage higher than the input voltage, the voltage stress on the primary switching element is ...

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): H02M3/28
CPCY02B70/1491
Inventor 贾·扬塔克米兰·M·乔瓦诺维奇
Owner DELTA ELECTRONICS INC