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A bidirectional DC converter with double transformer structure and its power control method

A dual-transformer, power control technology, applied in the field of high-frequency isolated DC-DC converter and its power control, high-frequency switching power supply direction, can solve the complex design of the controller, the converter can not achieve a wide range of soft switching and wide range Problems such as voltage gain, to achieve the effect of increasing the input voltage range, reducing on-state loss and circulation loss, and simplifying the circuit structure

Active Publication Date: 2019-08-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] In order to overcome the problem that the above-mentioned converter cannot realize wide-range soft switching and wide voltage gain under bidirectional power flow, and the controller design is complicated, the present invention discloses a bidirectional DC-DC converter based on a double transformer structure and its power control method

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  • A bidirectional DC converter with double transformer structure and its power control method
  • A bidirectional DC converter with double transformer structure and its power control method
  • A bidirectional DC converter with double transformer structure and its power 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 DC-DC converter based on a double transformer structure and its power control method are characterized in that it is mainly composed of a main circuit and a control circuit. Such as figure 1 As shown, the main circuit is mainly composed of the input side bridge arm, two high frequency transformers (T 1 , T 2 ) and the bridge arm on the output side, the input side is used for high-frequency inverter of the input voltage, the high-frequency transformer is used to achieve electrical isolation and gain adjustment; the output side is used to sha...

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Abstract

The invention discloses a bidirectional DC-DC converter based on a double transformer structure and a power control method thereof, belonging to the field of power electronics. The converter of the invention is composed of a main circuit and a control circuit; the main circuit is composed of an input side, an output side and two transformers; the control circuit includes a controller and a driving circuit. The present invention controls the transformer T 1 The input side voltage v AC , Transformer T 2 The input side voltage v AB and the output side voltage v FG and v AC , v AB The phase shift angle between them can realize a wide range of soft switching of the converter under a wide range of voltage input, and at the same time can reduce the loss of the converter and improve the efficiency of the converter. At the same time, the proposed power control method is simple in calculation, reliable in real time, and improves the reliability and implementability of the system.

Description

technical field [0001] A bidirectional DC-DC converter based on a double transformer structure and a power control method thereof disclosed in the present invention relate to a bidirectional DC-DC converter, in particular to a high-frequency isolated DC-DC converter and a power control method thereof, It 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; considering the safet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353H02M1/0058Y02B70/10
Inventor 沙德尚许国徐亚雄
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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