Bidirectional DC converter and its control method
A bidirectional DC conversion and control method technology, applied in the direction of DC power input conversion to DC power output, control/regulation systems, instruments, etc., to achieve large step-up or step-down ratio, easy to implement, and low cost effects
Active Publication Date: 2020-06-26
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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[0003] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem of how to meet the demand for high-voltage and high-power DC power conversion
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[0053] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.
[0054] The bidirectional DC converter provided by the present invention will be described below with reference to the accompanying drawings.
[0055] See attached figure 1 , figure 1 The main structure of the bidirectional DC converter in this embodiment is exemplarily shown. Such as figure 1 As shown, the bidirectional DC converter in this embodiment mainly includes a first DC port ( figure 1 Medium capacitance C 1 connected in parallel with the first DC port), the second DC port ( figure 1 Medium capacitance C 2 connected in parallel with the second DC port), the first switch module K, the second switch module R, the first capacitor C...
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The invention relates to the technical field of power electronic devices and in particular provides a bidirectional direct-current converter and a control method thereof, aiming at solving the technical problem of how to meet the requirements of high-voltage and high-power direct-current electric energy conversion. In order to realize the aim, the bidirectional direct-current converter provided bythe invention mainly comprises a first switching module and a second switching module. Specifically, the first switching module is connected with a positive electrode of a first direct-current port and is further connected with a negative electrode of the first direct-current port through an inductance module; the negative electrode of the first direct-current port is directly connected with thenegative electrode of a second direct-current port; the second switching module is connected with the positive electrode of the first direct-current port and is further connected with the positive electrode of the second direct-current port through an inductance module; a first capacitor is connected with the first switching module and the second switching module separately. Based on the structure, the bidirectional direct-current converter provided by the invention can be used for carrying out high-voltage and direct-current electric energy conversion through the first switching module and the second switching module, so that the high-voltage or high-power load direct-current electric energy requirements are met.
Description
technical field [0001] The invention relates to the technical field of power electronic devices, in particular to a bidirectional DC converter and a control method thereof. Background technique [0002] The DC converter based on the Super Boost topology has the characteristics of high power density, high efficiency and high reliability, and it can reliably convert DC power into DC power required by the load. However, the current DC converter based on the Super Boost topology is only suitable for low-voltage or low-power loads, and cannot meet the DC power requirements of high-voltage or high-power loads. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem of how to meet the demand for high-voltage and high-power DC power conversion. For this purpose, the present invention provides a bidirectional DC converter and a control method thereof. [0004] In the first aspect, the bidirectiona...
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IPC IPC(8): H02M3/335
CPCH02M3/33584
Inventor 霍群海熊佳旺尹靖元吴理心韦统振
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI