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Resonant inverter

一种换流器、谐振的技术，应用在电流馈电谐振换流器领域，能够解决复杂控制器、换流器启动困难等问题

Active Publication Date: 2008-09-17
AUCKLAND UNISERVICES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The start-up of this form of inverter is particularly difficult and requires complex controllers

Method used

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  • Resonant inverter
  • Resonant inverter
  • Resonant inverter

Examples

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Embodiment Construction

[0044] refer to figure 2 , showing a new converter design. In this converter, the above references are completely eliminated figure 1 The bulky and expensive DC inductor Ld, and shunt transformer Lsp are described. Two inductive elements such as coils (they can be track loops in ICPT systems) L1 and L2 are used instead of figure 1The circuit's original resonant inductor L, shunt transformer Lsp and DC inductor Ld. Each coil L1 and L2 may comprise half of the primary inductive path for the ICPT power system. Inductive elements L1 and L2 may comprise a single winding or a tapped winding with a center tap or connection. They can be positively coupled, negatively coupled, or not coupled at all. The inductance of each element need not be the same, although in most cases it is preferable to keep them balanced. as will be from figure 2 As seen, the power supply Vd is provided at an input terminal connected to the first terminal of each ideal element connected across a capaci...

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Abstract

A resonant inverter includes inductive elements (L1, L2) that allow the number of magnetic components in the inverter to be reduced. The elements (L1, L2) may be designed with a leakage inductance to eliminate the need for a large DC inductor. They may also perform the function of a current splitting transformer. The inverter switches may also be driven directly from the inverter circuit without a separate controller being required.

Description

technical field [0001] The present invention relates to current-fed resonant converters for converting direct current (DC) to alternating current (AC) for electrical applications. Background technique [0002] Inverters have a variety of uses in power supplies, including the generation of AC power, for example when used as an inverter to convert a DC output voltage to AC power (eg, an uninterruptible power supply). They can also be used in internal stages of DC to DC converters, induction heating, microwave generation, surface inspection, medical testing, high frequency radio systems, inductively coupled power transfer (ICPT) systems, etc. [0003] exist figure 1 The middle represents a conventional push-pull current-fed resonant converter. The operation of this inverter is discussed in US Patent Specification 5,450,305, the contents of which are incorporated herein by reference. These resonant converters have gained greater popularity due to their low switching losses an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/3384H02M7/53846Y02B70/1433Y02B70/1441Y02B70/10H02M7/538
Inventor 呼爱国
Owner AUCKLAND UNISERVICES LTD
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