A hybrid inverter and its control method

A control method and inverter technology, which can be applied to current collectors, single-network parallel feeding arrangements, photovoltaic power generation, etc., and can solve problems such as load power restrictions

Inactive Publication Date: 2015-10-28
NINGBO ZIHUA ELECTRIC APPLIANCE
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Problems solved by technology

[0003] The grid-connected inverter can only be used for grid-connected power generation, while the off-grid inverter has the disadvantage that the load power consumption is limited when the sunlight is weak, and neither of them can be adjusted according to the actual situation to meet the needs of users. Actual needs, so its structure needs to be further improved

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  • A hybrid inverter and its control method
  • A hybrid inverter and its control method
  • A hybrid inverter and its control method

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Such as Figure 1 to Figure 5 In the shown embodiment, the figure numbers illustrate: inverter body 1, load 21, photovoltaic cell 22, storage battery 23, public power grid 24, main control machine 3, interface circuit 31, measuring device 4, A / D converter 41, Digital signal processor 5 , storage chip 6 , relay group 7 , drive circuit 71 , thyristor 8 , and display 9 .

[0031] this invention

[0032] A hybrid inverter, including an inverter body 1 connected to a load 21, the inverter body 1 is connected to a main control machine 3, wherein the inverter body 1 is connected to a photovoltaic cell 22 and a storage battery 23 respectively and the public power grid 24 are connected, and the inverter body 1 is provided with a digital signal processor 5 for receiving and processing the physical quantity measured by the measuring device 4, a ...

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Abstract

The invention discloses a hybrid inverter. The hybrid inverter comprises an inverter body connected with a load, wherein the inverter body is connected with a main control computer; the inverter body is connected with a photovoltaic cell, a storage battery and a public power grid respectively; a digital signal processor for receiving and processing physical quantity measured by a measuring device, a storage chip for storing operating data of the inverter and a relay set for converting a control signal are all arranged in the inverter body; a thyristor is connected to the relay set in parallel, the digital signal processor and the storage chip are in signal connection, the relay set is in signal connection with the digital signal processor through a driving circuit, and the storage chip and the driving circuit are in signal connection. The hybrid inverter is simple in structure, can independently regulate work modes according to power generation conditions and power utilization conditions, improves utilization rate of solar energy while guaranteeing the power utilization needs of the load, and can guarantee uninterruptible power supply for the load.

Description

technical field [0001] The invention relates to the technical field of solar power generation equipment, in particular to a hybrid inverter and a control method. Background technique [0002] Inverters, also known as power regulators, can be divided into off-grid inverters and grid-connected inverters according to their use in photovoltaic power generation systems; off-grid inverters are used for independent power supplies inverter. According to the waveform modulation method, it can be divided into square wave inverter, ladder wave inverter, sine wave inverter and combined three-phase inverter. For inverters used in grid-connected systems, they can be divided into transformer-type inverters and non-transformer-type inverters according to the presence or absence of transformers. During my country's "Eleventh Five-Year Plan" period, photovoltaic power generation supporting equipment such as inverters are mostly in the research and development and innovation stages, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J7/35H02J13/00
CPCY02E10/56Y02E40/70Y04S10/123
Inventor 宋子华虞海贤杨红梁杨江灵樊恩德
Owner NINGBO ZIHUA ELECTRIC APPLIANCE
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