Wind-solar complementary off-grid and grid-connected dual-mode system

A wind-solar complementary, dual-mode technology, applied in the direction of photovoltaic power generation, wind power generation, single-net parallel feeding arrangement, etc., can solve problems such as low solar energy utilization rate, power grid pollution, solar panels can not track the incident angle of sunlight in real time, etc. To achieve the effect of ensuring charging characteristics, improving adaptability, and ensuring life

Inactive Publication Date: 2017-02-01
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional grid-connected wind-solar hybrid controller has the following problems: (1) Most of the solar panels adopt a fixed power supply mode, and the solar panels cannot track the incident angle of sunlight in real time, and the utilization rate of solar energy is low; (2) and Most of the network feedback methods use the grid voltage as the given feedback current. The distortion of the grid voltage will cause a large number of harmonic components in the feedback current, resulting in grid pollution.

Method used

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  • Wind-solar complementary off-grid and grid-connected dual-mode system

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Embodiment 1

[0056] A wind-solar complementary off-grid and grid-connected dual-mode system, which consists of: a battery charger 1, the battery charger is composed of a solar battery circuit group 2 and a wind power generator 3, and the solar battery circuit group 2 and The wind power generating set 3 is respectively connected to the DC-DC step-up regulator 4 and the three-phase inverter circuit 5 in sequence.

Embodiment 2

[0058] According to the wind-solar complementary off-grid and grid-connected dual-mode system described in Embodiment 1, the solar battery circuit group is composed of a photoelectric detection circuit, a biaxial motor drive circuit, and a biaxial DC motor, and the photoelectric detection circuit detects solar The azimuth angle of the incident light, the photoelectric detection circuit includes a solar cell panel automatic tracking device and a maximum power tracking device, by controlling the rotation of the two-axis DC motor, the solar cell panel is perpendicular to the irradiation direction of the sun in real time; The above-mentioned wind power generating set is composed of a wind power generator, a permanent magnet synchronous generator, and a rectifier circuit; Battery connection in voltage regulator.

Embodiment 3

[0060]According to the wind-solar complementary off-grid and grid-connected dual-mode system described in Embodiment 1, the Boost boost chopper circuit in the DC-DC boost regulator is connected to the wind power generator set in the battery charger , the Boost step-up chopper circuit is connected with the voltage Hall one circuit, the voltage Hall one circuit is connected with the single-chip microcomputer PIC18-1, and the described single-chip microcomputer PIC18-1 is connected with the drive circuit, and the described drive circuit It is connected with the Boost boost chopper circuit, the storage battery is arranged between the wind power generating set and the Boost boost chopper circuit, the storage battery is connected with the voltage Hall 2 circuit, and the voltage The Hall two circuit is connected with the single-chip microcomputer PIC18-1.

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Abstract

The invention relates to a wind-solar complementary off-grid and grid connection dual-mode system. Mostly, a solar cell panel in a traditional grid connection type wind-solar complementary controller is in a fixed power supply mode, the solar cell panel cannot track the incident angle of sunlight in real time, and the utilization rate of solar energy is low. A power grid voltage is mostly used as a given feedback current in a grid connection feedback mode, the feedback current can contain plenty of harmonic components due to power grid voltage distortion, and accordingly electric network pollution can happen. The wind-solar complementary off-grid and grid connection dual-mode system comprises a solar cell circuit set and a wind generating set. The solar cell circuit set and the wind generating set are sequentially connected with a DC-DC boosting voltage stabilizer (4) and a three-phase inverter circuit (5) respectively. The wind-solar complementary off-grid and grid connection dual-mode system is used for wind-solar generating complementation.

Description

[0001] Technical field: [0002] The invention relates to a wind power and photovoltaic power generation complementary off-grid and grid-connected dual-mode operating equipment. [0003] Background technique: [0004] Because wind energy and solar energy have a certain complementarity in time and region, the wind is weaker when the sun is shining the strongest during the day, and the wind is generally stronger in the evening when there is almost no light, so solar power is mainly used for power generation during the day, and wind power is mainly used for evening power generation. The traditional grid-connected wind-solar hybrid controller has the following problems: (1) Most of the solar panels adopt a fixed power supply mode, and the solar panels cannot track the incident angle of sunlight in real time, and the utilization rate of solar energy is low; (2) and Most of the network feedback methods use the grid voltage as the given feedback current, and the distortion of the grid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCY02E10/56Y02E10/76
Inventor 高晗璎吕鑫丁磊陈凯杨仁德刘端增朱博李伟力
Owner HARBIN UNIV OF SCI & TECH
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