Method for implementing transmission and reception of carrier signal in solar power generation system
A carrier signal and power generation system technology, applied in distribution line transmission system, photovoltaic power generation, electrical components, etc., can solve problems such as interference and transmission power limitation
Active Publication Date: 2019-03-26
FONRICH NEW ENERGY TECH LTD
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Problems solved by technology
Sending power limitation Since the carrier current will radiate electromagnetic waves to the space when it is transmitted on the power line, which will interfere with broadcasting and navigation services such as flight and navigation in this frequency band, so the sending power is limited.
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[0055] Below in conjunction with each embodiment, the technical solution of the present invention is clearly and completely set forth, but described embodiment is only the embodiment that the present invention is used for describing description and not all embodiments, based on these embodiments, this invention The solutions obtained by those skilled in the art without creative work all belong to the protection scope of the present invention.
[0056] A photovoltaic power generation system usually consists of a whole array of module panels and a power inverter. In a conventional scheme, a low-frequency isolation transformer is set between the inverter and the mains AC network to achieve electrical isolation between the grid-connected part and the panel array. Photovoltaic power generation systems usually also include power equipment such as combiner boxes. It can ensure that the power generation system is easy to cut off the circuit during maintenance and inspection, and reduc...
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The invention mainly relates to a method for implementing transmission and reception of carrier signal in a solar power generation system. The method comprises the following steps of: a first inductoris arranged on a power line proximate an input end receiving electrical energy of the energy harvesting device; when the energy harvesting device sends a carrier signal to a power optimizer, the processor of the energy harvesting device controls a first switch coupled between the first DC voltage source and a terminal of a first inductor to periodically switch between on and off with high frequency, thereby injecting a series of high frequency pulses induced by periodic access and release of the first DC voltage source at the terminal of the first inductor; in addition, when the processor ofthe power optimizer receives a carrier signal from the power line, the inductive air-core sensor of the optimizer is used to sense a carrier signal from the power line, and then, the processor of theoptimizer receives a predetermined carrier signal.
Description
technical field [0001] The present invention mainly relates to the field of photovoltaic power generation. To be precise, it proposes a method for transmitting and receiving carrier signals in a power generation system containing various power electronic devices, and realizes data transmission between different power devices. Solar power generation systems Communication functions can also be integrated while achieving power optimization. Background technique [0002] In the field of new energy, photovoltaic power generation, a new energy source, has the advantages of cleanness, safety and reliability, low operating costs, simple daily maintenance, and on-site power generation, making photovoltaic power generation systems a new type of energy that is widely concerned and developed in countries around the world, especially in energy-deficient areas. The industry plays an indispensable role in solving the problem of electricity consumption due to energy shortage. The core equi...
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Login to View More IPC IPC(8): H04B3/54H02J3/38
CPCH02J3/385H04B3/54Y02E10/56
Inventor 张永胡晓磊
Owner FONRICH NEW ENERGY TECH LTD