Soft switching MPPT controller and photovoltaic power supply system

A controller and soft-switching technology, applied in control/regulation systems, photovoltaic power generation, instruments, etc., can solve the problems of inapplicability, increase the difficulty of control, increase the cost and occupy space, and reduce the overlap of voltage and current. , the effect of reducing control complexity and improving power density

Active Publication Date: 2022-06-03
RENOGY NEW ENERGY CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the above circuit structure requires an additional auxiliary circuit, especially the inductance and auxiliary switch in the auxiliary circuit, which not only increases the cost and space, but also increases the difficulty of control, thereby increasing the risk of circuit failure, so it is also not suitable for In power systems with high power density requirements
Furthermore, the BUCK converter does not consider the influence of the MPPT control process on the circuit control complexity, so it cannot be used in photovoltaic power systems

Method used

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  • Soft switching MPPT controller and photovoltaic power supply system
  • Soft switching MPPT controller and photovoltaic power supply system
  • Soft switching MPPT controller and photovoltaic power supply system

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Embodiment Construction

[0020] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

[0021] It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without furt...

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Abstract

The soft switching MPPT controller comprises an input sampling module, a control module and a power conversion module, the input sampling module is used for collecting the input voltage and / or the input current of a first power supply, and the control module is used for converting the input voltage and / or the input current of the first power supply according to the input voltage and / or the input current. The maximum power point of the first power supply is determined, a driving signal is generated, and the power conversion module enables an energy storage inductor L1 of the power conversion module to work in an intermittent conduction mode according to the driving signal; the invention also provides a photovoltaic power supply system. According to the soft switching MPPT controller, solar maximum power point tracking and soft switching of a circuit structure can be achieved at the same time through a simple circuit structure, circuit loss and control complexity are reduced, the power density of a system is improved, and a photovoltaic power source efficiently charges an energy storage battery or supplies power to an alternating current load.

Description

technical field [0001] The present application relates to the technical field of new energy, in particular to a soft-switching MPPT controller and a photovoltaic power supply system. Background technique [0002] In the field of photovoltaic power supply, MPPT (Maximum power point tracking, maximum power point tracking) controller is an important power conversion system, which can detect the power generation voltage of photovoltaic cells in real time, and track the maximum voltage and current value (VI) to make The system charges the battery with the maximum power, coordinates the work of the solar panel, the battery or the load, and is the brain of the photovoltaic system. [0003] Traditional power conversion systems usually have two technical routes, one is hard switching and the other is soft switching. The hard switching circuit has a simple structure and convenient control, but has low efficiency and serious electromagnetic interference, and is not suitable for power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M1/088G05F1/67H02J7/35H02J3/38
CPCH02M3/158H02M1/083H02M1/088G05F1/67H02J7/35H02J3/381H02J2300/26Y02E10/56
Inventor 蒋袁
Owner RENOGY NEW ENERGY CO LTD
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