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Improved switching protection current assisted resonant circuit

A switching circuit and resonance technology, applied in the direction of converting irreversible AC power input into DC power output, irreversible DC power input into AC power output, output power conversion device, etc., can solve the problem of semiconductor material melting through transistor short circuit and other issues to achieve the effect of reducing cooling needs, cheap manufacturing, and high accuracy

Active Publication Date: 2019-11-15
COMSYS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The passing current causes the oxide layer to heat up, which further enables current to flow through the oxide layer, creating a chain reaction that eventually leads to melting of the semiconducting material and thus creating a short circuit within the transistor

Method used

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  • Improved switching protection current assisted resonant circuit
  • Improved switching protection current assisted resonant circuit
  • Improved switching protection current assisted resonant circuit

Examples

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Embodiment Construction

[0029] The basic principles of a power converter using resonant switching will now be described by way of example with reference to the accompanying drawings. It should be understood that the drawings are for purposes of illustration only and are not limiting in scope in any way.

[0030] In the following figures, a power converter is shown for an active filter. However, this embodiment is only considered as an example of one use of the power converter. The inventive concept defined by the claims can be used in all applications requiring a resonant power converter, such as for example in power converters.

[0031] A power converter within the active filter generates a compensation current that compensates the load within the harmonic generating power system. By reducing harmonics in the electrical system, the resulting reactance effects are reduced, and thus overall energy consumption is reduced. A further description of the details of active filters can be found, for examp...

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Abstract

A resonant power converter comprising an electrical safety assembly (29b) comprising a combination of a diode (Dn2) and a Zener diode (Zn) coupled between a DC conductor and an auxiliary switching circuit, the diode being adapted to block current flow from The auxiliary switching circuit flows to the negative DC conductor, and the zener diode is adapted to allow current flow from the negative DC conductor when the potential difference between the negative DC conductor and the phase conductor is above a threshold voltage flow to the auxiliary switching circuit. The zener diode is selected such that the threshold voltage of the zener diode is lower than the maximum blocking voltage of the transistor.

Description

technical field [0001] The present invention generally relates to power converters that use resonance to limit the power required for switching. Background technique [0002] In a power converter, losses occur because none of the components have ideal characteristics. Losses introduce heat into the power circuit, which, in addition to dissipating energy, introduces thermal strain into all components, reducing their lifetime. [0003] It is desirable to increase the operating frequency of a power converter because the output so produced can then be more precisely controlled. Increasing the switching frequency results in lower switching ripple and smaller component values, which in turn leads to a more compact, lightweight and cost-effective implementation of the invention. Additionally, lower switching ripple allows for potentially lower EMI, which matches the goal of glitch-free switching. Additionally, having a high switching frequency allows higher frequency currents to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/487
CPCH02M7/48H02M7/4811H02M7/4815Y02B70/10H02M7/4826H02M7/487H02M7/5152H02M7/5236H02M3/325H02M7/36H02M7/75H02M1/14H02M3/158
Inventor 丹·利耶格伦奥斯卡·哈拉德逊
Owner COMSYS