Bidirectional hybrid bridge DC-DC converter and half-cycle volt-second area balance control method

A DC-DC, hybrid bridge technology, used in control/regulation systems, conversion of DC power input to DC power output, instruments, etc., can solve the complex design of the controller, the converter cannot achieve a wide range of soft switching and wide voltage gain And other issues

Active Publication Date: 2017-05-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] In order to overcome the problems that the above-mentioned converter cannot realize large-scale soft switching and wide voltage gain under bidirectional power flow, and the controller design is complex, the present invention discloses a bidirectional hybrid bridge DC-DC

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  • Bidirectional hybrid bridge DC-DC converter and half-cycle volt-second area balance control method

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with accompanying drawing and embodiment, also described the technical problem and beneficial effect that the technical solution of the present invention solves simultaneously, it should be pointed out that described embodiment is only intended to facilitate the understanding of the present invention, and It has no limiting effect on it.

[0030] A bidirectional hybrid bridge DC-DC converter disclosed in this embodiment is mainly composed of a main circuit and a control circuit. Such as figure 1 As shown, the main circuit is mainly composed of an input side, a high-frequency transformer and an output side. The input side is used for high-frequency inverter of the input low voltage, and the high-frequency transformer is used for electrical isolation and gain adjustment; the output side is used for the transformer AC voltage shaping to achieve rated voltage output; the input side is composed of high-f...

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Abstract

The invention discloses a bidirectional hybrid bridge DC-DC converter and a half-cycle volt-second area balance control method, and belongs to a high-frequency switching power supply in the electric power and electronic field. The bidirectional hybrid bridge DC-DC converter disclosed by the invention consists of a main circuit and a control circuit; the main circuit consists of an input side, a high-frequency transformer and an output side; and the control circuit comprises a controller and a driving circuit. Based on the proposed bidirectional hybrid bridge DC-DC converter, half-cycle volt-second area balance control is adopted; the leakage inductance current effective value in a power non-transfer stage can be reduced by adjusting the duty ratio of the input side and by performing the half-cycle volt-second area balance control at the same time, and reactive current can be decreased, thereby lowering circuit on-state loss and ring current loss caused by the current; meanwhile, wide-range soft switching of each switching tube device also can be realized; and in addition, by virtue of the half-cycle volt-second area balance control, real-time control of bidirectional power flow can be realized while the complexity level of the control unit also can be lowered.

Description

technical field [0001] The present invention relates to a bidirectional DC-DC converter and a half-period volt-second area method for controlling the converter, in particular to a high-frequency isolated bidirectional hybrid bridge DC-DC converter and its half-period volt-second area method The balance control method belongs to the direction of high-frequency switching power supply in the field of power electronics. Background technique [0002] With the development of power electronics technology, the demand for bidirectional, high-frequency isolation, and high-efficiency converters is gradually increasing, especially in various power supply systems such as solid-state transformers including energy storage units, high-voltage direct current transmission, and micro-grids. Because these systems need to control the energy of charging and discharging the energy storage unit, the converter is required to have the characteristics of bidirectional controllable power flow; consider...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCH02M3/3353H02M1/0058Y02B70/10
Inventor 沙德尚许国徐雅雄焉禹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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