Wind-solar hybrid controller and system with continuously-controllable output power

A technology of wind-solar complementarity and output power, applied in the field of electrical control, can solve the problems of the inability to realize the protection function of the energy storage battery and the reduction of the capacity utilization rate of the energy storage battery, so as to improve the SOC utilization rate, improve the service life, and the current can be completely control effect

Inactive Publication Date: 2015-11-04
SHANGHAI ELECTRICGROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, it can be seen that although the current topological discharge control method of wind-solar hybrid controller uses the discharge resistance to consume the unnecessary energy of the battery, it cannot realize the current due to the formation of a square wave current on the battery. The protection function of the energy storage battery under high charging current also leads to a large reduction in the capacity utilization of the energy storage battery due to high current charging

Method used

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  • Wind-solar hybrid controller and system with continuously-controllable output power
  • Wind-solar hybrid controller and system with continuously-controllable output power
  • Wind-solar hybrid controller and system with continuously-controllable output power

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Embodiment 1

[0037] Such as Figure 4 As shown, a wind-solar hybrid controller with continuously controllable output power, including:

[0038] Wind turbines for converting wind energy into electricity;

[0039] Photovoltaic panels, which convert light energy into electricity;

[0040] a three-phase rectifier bridge circuit connected to the fan for converting the alternating current output by the fan into direct current, and the three-phase rectifier bridge circuit is connected in parallel with the photovoltaic panel;

[0041] A switch DC boost circuit is respectively connected in parallel with the three-phase rectifier bridge and the photovoltaic panel, and is used to continuously control the input current of the energy storage battery;

[0042] An energy storage battery, the positive pole of the energy storage battery is connected in series with the positive terminal of the three-phase rectifier bridge and the positive terminal of the photovoltaic panel respectively, and its negative p...

Embodiment 2

[0051] According to the wind-solar hybrid controller with continuously controllable output power proposed in the first embodiment, this embodiment proposes an off-grid wind-solar hybrid power supply system.

[0052] Such as Figure 7 As shown, the off-grid wind-solar hybrid power supply system includes a wind-solar hybrid controller, a power load, and a battery control module. The electric load is connected to the energy storage battery through a DC bus, and the battery control module is connected to the electric load and the energy storage battery respectively.

[0053] The battery control module calculates the output current iref required by the wind-solar hybrid controller according to the real-time power of the electric load and the charging current value required by the working characteristics of the energy storage battery, so that the power generation of distributed energy can be realized to meet the electric load Under the premise, the charging current of the energy st...

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Abstract

The invention provides a wind-solar hybrid controller and system with continuously-controllable output power. The controller comprises a fan; a three-phase rectifier bridge circuit which is connected with the fan; an energy storage battery of which the positive electrode and the negative electrode are connected with the positive end and the negative end of the three-phase rectifier bridge circuit respectively and which is used for storing electric energy; and a switching direct-current boost circuit which is connected in parallel with the three-phase rectifier bridge circuit and the energy storage battery respectively and is used for controlling the input current of the energy storage battery and realizing continuous controllability of the input current. The wind-solar hybrid system comprises the wind-solar hybrid controller, a power load and a battery control module, wherein the battery control module is used for controlling the charging current value of the energy storage battery according to the practical situation of the energy storage battery. Through adoption of the wind-solar hybrid controller and system, the effects of completely controllable current and continuous current of the energy storage battery are achieved, and the SOC (State of Charge) utilization ratio of the energy storage battery is increased greatly. Meanwhile, the service life of the energy storage battery is prolonged.

Description

technical field [0001] The invention relates to the field of electric control, in particular to a wind-solar complementary controller system with continuously controllable output power. Background technique [0002] The wind-solar hybrid controller regulates and controls the electric energy generated by photovoltaic panels and wind generators. On the one hand, it sends the adjusted energy to DC load or AC load; The battery pack is charged. After the battery is fully charged, the controller discharges the electricity generated by the fan (or fan and photovoltaic panel), that is, consumes excess energy through a resistor to ensure that the battery is not overcharged. [0003] The topological structure of existing wind-solar hybrid controllers is as follows: figure 1 with figure 2 As shown, the basic principle is the same, the difference is that figure 1 The topological structure of the wind turbine only carries out the discharge control for the energy emitted by the fan, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S10/12H02S10/20
CPCY02E10/50Y02E70/30
Inventor 殷志柱张霞
Owner SHANGHAI ELECTRICGROUP CORP
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