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Current fed power converter system including normally open switch

A technology of power converter and normally open switch, which is applied in the direction of output power conversion device, conversion of DC power input to DC power output, conversion of AC power input to DC power output, etc., and can solve problems such as system loss

Inactive Publication Date: 2008-07-30
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The efficiency of this two-stage inverter is an important parameter affecting the performance of the PV system, and is a multiple of the efficiency of each single stage, each stage usually results in half of the system losses

Method used

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  • Current fed power converter system including normally open switch
  • Current fed power converter system including normally open switch
  • Current fed power converter system including normally open switch

Examples

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Embodiment Construction

[0014] 1 is a block diagram according to one embodiment, wherein a system 10 includes an energy source 12 configured to operate as a current-limited source; and a DC-to-DC converter 14 including a normally open switch 15 . FIG. 2 is a more detailed schematic diagram of a DC-to-DC converter used in the embodiment of FIG. 1 .

[0015] A current-limiting source is a source that, when shorted, naturally limits the current to a level that is within or slightly beyond the operating range of the system, but not beyond that causing damage to the equipment. A current-limited source has a specified maximum current value and typically presents a high impedance across its terminals. Typically, a current-limited source also has a finite voltage. In one embodiment, energy source 12 includes a photovoltaic energy source. However, other forms of energy could be used, one example being fuel cells.

[0016] The DC to DC converter 14 typically comprises a current fed converter. A current-fed...

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PUM

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Abstract

A power converter system is fed with current comprising a normally open switch. The system (10) includes an energy source (12) configured to operate as a current limiting source; and a DC-to-DC converter (14) or current switching inverter (30) configured to receive current from the energy source and includes a constant Turn on switch (15).

Description

technical field [0001] The subject matter disclosed herein generally relates to power converter systems including semiconductor switches. Background technique [0002] Photovoltaic (PV) cells generate direct current (DC) power, the DC current level is dependent on solar irradiation, and the DC voltage level is dependent on temperature. When alternating current (AC) power is required, an inverter is used to convert the DC energy to AC energy. A typical PV inverter uses two stages for power processing, the first stage is configured to provide a constant DC voltage and the second stage is configured to convert the constant DC voltage to AC current. Typically, the first stage includes a boost converter and the second stage includes a single-phase or three-phase inverter system. The efficiency of this two-stage inverter is an important parameter affecting the performance of the PV system, and is a multiple of the efficiency of each single stage, each stage usually causing half ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/155H02M7/5387
CPCH02M3/155H02M3/158Y02E10/56
Inventor R·勒斯纳S·F·S·埃尔-巴巴里H·-J·克罗科斯青斯基M·A·德卢伊
Owner GENERAL ELECTRIC CO