Dual-direction dual-input ZETA/SEPIC direct-current converter and power distribution method thereof

A DC converter, dual-input technology, applied in the direction of conversion equipment, collectors, transportation and packaging without intermediate conversion to AC, can solve the problems of complex structure and high cost, and achieve energy feedback, low loss, and optimal utilization Effect

Inactive Publication Date: 2013-10-09
CHANGZHOU RUIHUA POWER ELECTRONICS DEVICES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In the traditional new energy joint power supply system, each energy form usually requires a DC / DC converter to convert various energy sources into DC output, and connect them in parallel to the common DC bus to supply DC loads, but its structure is more complicated. and higher cost

Method used

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  • Dual-direction dual-input ZETA/SEPIC direct-current converter and power distribution method thereof
  • Dual-direction dual-input ZETA/SEPIC direct-current converter and power distribution method thereof
  • Dual-direction dual-input ZETA/SEPIC direct-current converter and power distribution method thereof

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Embodiment Construction

[0029]Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0030] Such as figure 1 As shown, a bidirectional dual-input ZETA / SEPIC DC converter includes a ZETA pulse voltage source unit, a SEPIC pulse current source unit and an output filter circuit;

[0031] The SEPIC pulse current source unit includes a first input DC voltage source V 1 , the first power switch tube M 1 , the third power switch tube M 3 , the first inductance L 1 , the second inductance L 2 and the first capacitor C 1 , the first input DC voltage source V 1 The positive pole of the first inductor L 1 One end of the connection, the first inductor L 1 The other end of the first power switch tube M 1 The drain, the first capacitor C 1 One end of the connection, the first capacitor C 1 The other end of the third power switch tube M 3 The source, the second inductance L 2 One end of the connection, the first input DC voltage so...

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Abstract

Provided is a dual-direction dual-input ZETA/SEPIC direct-current converter and a power distribution method of the dual-direction dual-input ZETA/SEPIC direct-current converter. The direct-current converter comprises a ZETA impulse voltage source, an SEPIC impulse current source and an output filtering circuit. The SEPIC impulse current source comprises a first input direct voltage source A, a first power switching tube M1, a third power switching tube M3, a first inductor L1, a second inductor L2 and a first capacitor C1. The ZATA impulse voltage source comprises a second input direct voltage source B, a second power switching tube M2, a fourth power switching tube M4, a third inductor L3 and a second capacitor C2. The ZETA impulse voltage source is embedded into the SEPIC impulse current source. The output filtering circuit comprises an output filtering capacitor C. The power distribution method includes the steps of conducting power distribution and load feedback power control on the two input sources. The dual-direction dual-input ZETA/SEPIC direct-current converter and the power distribution method of the dual-direction dual-input ZETA/SEPIC direct-current converter can achieve voltage boosting, voltage reduction and energy feedback, are high in circuit efficiency, allow the converter not to be isolated, and are suitable for small and medium-size power new energy joint power supply systems.

Description

【Technical field】 [0001] The invention relates to the field of power electronic converters, in particular to a bidirectional double-input ZETA / SEPIC DC converter and a power distribution method thereof. 【Background technique】 [0002] With the increasingly prominent environmental protection issues, people pay more and more attention to the development and utilization of renewable energy. Renewable energy has the characteristics of cheap, reliable, clean and pollution-free, and abundant energy, so renewable energy power generation has shown a good market prospect. At present, the most widely used renewable energy power generation forms include photovoltaic power generation, fuel cell power supply, wind power generation, hydropower generation, geothermal power generation, etc., but these power generation forms have the characteristics of unstable power supply, discontinuity, and changes with climate conditions. , so a distributed power supply system using multiple energy sour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/10H02J7/35
Inventor 颜辉陈雪筠孙祥玉邵凌翔孙孝峰
Owner CHANGZHOU RUIHUA POWER ELECTRONICS DEVICES
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