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Single-primary winding voltage source type multi-input full-bridge converter

A technology of full-bridge converter and primary winding, which is applied in the direction of converting DC power input to DC power output, adjusting electrical variables, and output power conversion devices, etc., which can solve the problem of large number of switching tube devices, single control method, and complex structure etc. to achieve the effect of reducing the volume, simplifying the circuit structure, and increasing the control strategy

Inactive Publication Date: 2011-05-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The existing multi-input full-bridge converter can use magnetic flux coupling to realize multi-input, but the number of windings on the primary side of the converter is the same as the number of input sources, the number of switching tubes is large, the structure is complex and costly, and the control method is relatively simple

Method used

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  • Single-primary winding voltage source type multi-input full-bridge converter
  • Single-primary winding voltage source type multi-input full-bridge converter
  • Single-primary winding voltage source type multi-input full-bridge converter

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] The present invention introduces the concept of a pulsed voltage source cell (Pulsating Voltage Source Cell, PVSC), and directly replaces the input of the full-bridge converter after the Buck-type PVSC (input channel) is connected in series to form a single primary winding voltage source type multi-input full-bridge converter device.

[0019] Such as figure 1 As shown, the circuit structure of the converter of the present invention is composed of N input channel circuits, a full-bridge converter circuit 20 and an output rectifier circuit 30, where N is a natural number greater than 1, wherein: each input channel circuit is composed of an input source , a switch tube and a freewheeling diode, the anode of the input source is connected to the drain of the switch tube, the source of the switch tube is connected to the cathode of the freewheeling diode, and the anode of...

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Abstract

The invention discloses a single-primary winding voltage source type multi-input full-bridge converter, belonging to the field of power electronic converters. The converter consists of N input channel circuits, a full-bridge converter circuit (20) and an output rectifying circuit (30), wherein N is a natural number greater than 1; each input channel circuit consists of an input source, a switch tube and a fly-wheel diode; the N input channel circuits are connected in series by the fly-wheel diode; the full-bridge converter circuit (20) consists of four full-bridge switch tubes and a transformer; and the output rectifying circuit (30) consists of a full-bridge rectifying circuit, a filtering inductor and a filtering capacitor. The primary edge of the transformer of the converter is only provided with a winding, the number of the switch tubes can be 4+N, and the volume of the converter is small and the structure is simple; when the switch tubes in the input channels are switched on simultaneously, the input source is connected in series to the load for supplying electricity so as to realize that the multiple input sources supply electricity simultaneously or at the different time.

Description

technical field [0001] The invention relates to a single-primary winding voltage source type multi-input full-bridge converter in a power converter, belonging to the field of power electronic converters. Background technique [0002] With the continuous shortage of fossil energy and the continuous aggravation of environmental pollution, the development and utilization of new energy and renewable energy have received more and more attention. Distributed power generation systems have become a research hotspot, and direct-to-direct converters are an important component of them. part. However, new energy and renewable energy, such as: solar energy, wind energy, etc., vary greatly with climate and regional differences, and the power supply is unstable and discontinuous. In addition, the output voltage of fuel cells changes with changes in load, so in order to ensure Continuous and reliable power supply to loads requires multiple new energy sources to complement each other to for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
Inventor 王勤张杰阮新波周晨
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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