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Two-way two-input CUK direct-current converter and power distribution method thereof

A DC converter, dual-input technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of high cost and complex structure, and achieve the effect of maintaining stability, realizing energy feedback, and realizing energy

Inactive Publication Date: 2013-09-11
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Two-way two-input CUK direct-current converter and power distribution method thereof
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  • Two-way two-input CUK direct-current converter and power distribution method thereof

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0028] like figure 1 As shown, a bidirectional double-input CUK DC converter includes a first CUK pulse voltage source unit, a second CUK pulse voltage source unit and an output filter circuit;

[0029] The first CUK pulse voltage source unit includes a first input DC voltage source A (hereinafter referred to as power source A), a first power switch tube M 1 , the second power switch tube M 3 , the first inductance L 1 and the first capacitor C 1 , the positive pole of the power supply A and 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 1The drain, the first capacitor C 1 One end of the connection, the first capacitor C 1 The other end and the second power switch tube M 3 The source connection of the second power switch tube M 3 The drain and the negative pole of...

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Abstract

The invention discloses a two-way two-input CUK direct-current converter and a power distribution method thereof. The two-way two-input CUK direct current converter comprises a first CUK impulse voltage source unit, a second CUK impulse voltage source unit and an outputting filter circuit. The first CUK impulse voltage source unit comprises a first input direct-current voltage source A, a first power switch tube M1, a second power switch tube M3, a first inductor L1 and a first capacitor C1. The second CUK impulse voltage source unit comprises a second input direct-current voltage source B, a third power switch tube M2, a fourth power switch tube M4, a second inductor L2 and a second capacitor C2. The outputting filter circuit comprises an outputting filter inductor L and an outputting filter capacitor C. The power distribution method includes performing power distribution and load feedback power control on the two input direct-current voltage sources. The two-way two-input CUK direct-current converter and the power distribution method thereof have the advantages that the circuit structure is complex, output polarity is reversed, voltage increasing and decreasing can be realized, range of output voltage regulation is large, energy feedback can be realized, loss is low, the circuit is efficient, ripple wave in output voltage waveform is small, isolation transformers are not needed and the like.

Description

technical field [0001] The invention relates to the field of power electronic converters, in particular to a bidirectional double-input CUK 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 sources for joi...

Claims

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Application Information

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IPC IPC(8): H02M3/04H02M3/07
Inventor 孙孝峰李昕李伟松刘飞龙周悦
Owner YANSHAN UNIV
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