High efficiency power conversion device and control method
A technology of power conversion and power converter, which is applied in the direction of output power conversion device, conversion equipment without intermediate conversion into AC, conversion of DC power input into DC power output, etc.
Active Publication Date: 2022-03-18
NUVOLTA TECH (HEFEI) CO LTD
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Problems solved by technology
More particularly, achieving high-efficiency wireless power transfer under various input and output conditions (e.g., different load currents and / or different rated input voltages of receivers) has become a significant problem, which has significant implications for the system of wireless power transfer systems. design challenges
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[0024] The making and use of the presently preferred embodiments are discussed in detail below. It should be appreciated, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.
[0025] The present invention will be described with respect to preferred embodiments in a specific context, namely various control methods applied to high efficiency power converters to increase the efficiency and performance of wireless power transfer systems. However, the present invention is also applicable to various power systems. Hereinafter, various embodiments will be explained in detail with reference to the accompanying drawings.
[0026] figure 1 A block diagram of a wireless power transfer system according to various embodiments of the invention is sho...
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The present invention relates to the technical field of power conversion, and in particular to a high-efficiency power conversion device and a control method. The high-efficiency power conversion device includes: a rectifier configured to convert an AC voltage into a DC voltage, wherein the AC voltage is configured to be magnetically coupled to Receiver coil generation of a transmitter coil of a wireless power transfer system; a high efficiency power converter connected to a rectifier, the high efficiency power converter comprising a first stage and a second stage connected in cascade; and configured to sense a plurality of operating parameters and a controller that generates control signals that are applied to the control loop of the first stage. In the manner described above, the present invention can improve the efficiency of power conversion equipment.
Description
technical field [0001] The present invention relates to power converters and control methods applied to power converters, and in particular embodiments, to various output voltage control methods of high-efficiency power converters applied in receivers of wireless power transmission systems. Background technique [0002] As the technology develops further, wireless power transfer emerges as an efficient and convenient mechanism for powering or charging battery-based mobile devices such as mobile phones, tablet PCs, digital cameras, MP3 players, and / or similar devices. A wireless power transfer system typically includes a primary side transmitter and a secondary side receiver. The primary side transmitter is magnetically coupled to the secondary side receiver by magnetic coupling. The magnetic coupling may be realized as a loosely coupled transformer with a primary side coil formed in the primary side transmitter and a secondary side coil formed in the secondary side receiver...
Claims
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IPC IPC(8): H02M7/217H02M3/158H02M3/07H02J50/10
CPCH02M7/217H02M3/1584H02M3/07H02J50/10
Inventor 李锃陈俊晓黄金彪王新涛
Owner NUVOLTA TECH (HEFEI) CO LTD