Bi-direction dual-input ZETA/BUCKBOOST direct current converter and method for distributing power of direct current converter

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 high cost and complex structure, achieve stability, realize energy feedback, and realize energy effect

CN103441671AInactive Publication Date: 2013-12-11YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-12-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a bi-direction dual-input ZETA / BUCKBOOST direct current converter and a method for distributing power of the direct current converter. The bi-direction dual-input ZETA / BUCKBOOST direct current converter comprises a ZETA impulse voltage source unit, a BUCKBOOST impulse current source unit and an output filter circuit. The ZETA 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 BUCKBOOST impulse current source unit comprises a second input direct current voltage source B, a third power switch tube M2, a fourth power switch tube M4 and a second inductor L2. The output filter circuit comprises an output filter capacitor c. The method for distributing the power of the direct current converter comprises the step of distributing power and controlling load feedback power of the ZETA impulse voltage source unit and the BUCKBOOST impulse current source unit. The bi-direction dual-input ZETA / BUCKBOOST direct current converter and the method for distributing the power of the direct current converter have the advantages of being capable of achieving the purposes of increasing and reducing voltage, feeding back energy and inversing output polarity, large in output voltage adjusting range, small in loss, high in circuit efficiency, small in ripple waves in output voltage waveform and the like, and an isolation transformer is not needed.
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Description

technical field

[0001] The invention relates to the field of power electronic converters, in particular to a bidirectional double-input ZETA / BUCKBOOST 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 forms of renewable energy power generation include photovoltaic power generation, fuel cell power supply, wind power generation, hydropower generation, geothermal power generation, etc., but these power generation forms have unstable, discontinuous power supply, and large changes with climatic conditions. Therefore, there is a special need for a distributed power supply system that ...

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0029] Such as figure 1 As shown, a bidirectional dual-input ZETA / BUCKBOOST DC converter includes a ZETA pulse voltage source unit, a BUCKBOOST pulse current source unit and an output filter circuit;

[0030] The ZETA 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 power switch tube M 1 The drain connection of the first power switch tube M 1 source of the first inductance L 1 One end of the first capacitor C 1 One end of the connection, the first capacitor C 1The other end and the second power switch tube M 3 connected to the drain, the first inductance L 1 The other end and the negative pole of th...