Multi-level series series generating unit group and its bypass protection circuit
A power generation unit, bypass protection technology, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, battery circuit devices, etc., can solve the problem of increasing the internal resistance of power generation unit groups, Schott Problems such as large voltage drop of the base diode and lower power generation efficiency of the photovoltaic power generation unit achieve the effect of improving power generation efficiency and voltage drop
Active Publication Date: 2020-11-10
SHANGHAI NATLINEAR ELECTRONICS CO LTD
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Problems solved by technology
However, the voltage drop of the Schottky diode is large, which increases the internal resistance of the entire power generation unit group, thereby reducing the power generation efficiency of the entire photovoltaic power generation unit
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[0062] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0063] see Figure 2 to Figure 8 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, so that only the components related to the present invention are shown in the diagrams rather than the number, shape and Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the...
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The invention provides a multistage series power generation unit group and a bypass protection circuit thereof. The bypass protection circuit comprises an NMOS power tube, a first capacitor, a capacitor voltage detection module, a positive electrode voltage detection and driving module, a capacitor charging module, a first NMOS tube and a second NMOS tube. Only the capacitor voltage detection module and the anode voltage detection and driving module on the first capacitor consume power, so that static current can be very small; the duty ratio of the conduction time of the NMOS power tube is enabled to be very large, for example, more than 95%, the time for the light-emitting current of the power generation unit to pass through the body diode of the NMOS power tube of the bypass protectioncircuit is very short; equivalently, the average voltage drop of the light-emitting current of the power generation unit passing through the bypass diode is very small and is much lower than the voltage drop of an existing Schottky diode, so that the overall power generation efficiency of the multi-stage series power generation unit group is effectively improved.
Description
technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a multi-stage series series generating unit group and a bypass protection circuit thereof. Background technique [0002] With the shortage of energy and the pollution of the environment, more and more people pay attention to solar energy as a pollution-free and pollution-free green energy, and the application of solar photovoltaic power generation is also becoming more and more extensive. With the development of renewable energy, the application of solar photovoltaic power generation has attracted more and more attention, and solar power generation has also become a hot research field. [0003] In the current application of solar photovoltaic power generation, multi-level power generation units need to be connected in series. If one of the power generation units fails to generate power due to accidental reasons, it will become a resistor with a large resista...
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IPC IPC(8): H02S40/30H02H9/00H02J7/35G01R19/00G01R27/26
CPCG01R19/0084G01R27/2605H02H9/005H02J7/35H02S40/30Y02E10/50
Inventor 霍晓强刘桂芝王冬峰赵寿全
Owner SHANGHAI NATLINEAR ELECTRONICS CO LTD