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Intelligent compensation device and control method thereof

A compensation device and control method technology, applied in reactive power compensation, circuit devices, reactive power adjustment/elimination/compensation, etc., can solve problems such as low accuracy and limited range, and achieve rapid response, wide adjustment range, and reduction The effect of small reactive power

Inactive Publication Date: 2020-02-21
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the defects of low accuracy and limited range of existing power factor control schemes, the present invention proposes an intelligent compensation device and its control method

Method used

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  • Intelligent compensation device and control method thereof
  • Intelligent compensation device and control method thereof
  • Intelligent compensation device and control method thereof

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Embodiment Construction

[0031] Such as figure 1 As shown, the intelligent compensation device proposed by the present invention includes: a variable capacitor 1, a detection device 2 and a controller 3. The variable capacitor 1 and the electrical equipment 4 are connected in parallel to the power supply phase line, and the electrical equipment 4 can be an air conditioner. system or low-power electrical equipment containing inductive loads, the detection device 2 is used to collect the power factor of the power supply phase line, which can be a power factor meter, the controller 3 is connected to the detection device 2 and the variable capacitor 1, and the detection device 2 sends The power factor adjusts the capacitance of variable capacitor 1.

[0032] Such as Figures 2 to 4 As shown, in the first embodiment, the variable capacitor 1 adopts a rotary variable capacitor, and the rotary variable capacitor includes: a fixed pole plate 11, a rotating pole plate 12 and a first power mechanism, a fixed p...

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Abstract

The invention discloses an intelligent compensation device and a control method thereof. The intelligent compensation device comprises a variable capacitor, a detection device and a controller, wherein the variable capacitor is connected to a power supply phase line in parallel with electric equipment, the detection device is used for collecting a power factor of the power supply phase line, and the controller is connected with the variable capacitor and the detection device and adjusts the capacitance of the variable capacitor according to the power factor sent by the detection device. According to the invention, the power factor of the electric equipment is collected in real time, and the capacitance capacity of the variable capacitor is adjusted in real time according to the power factor, so that the power factor of the electric equipment is improved, and the reactive power released by the electric equipment to a power grid is reduced. Compared with the traditional compensation mode, the device is more accurate, automatic in regulation and control in the whole process, rapid in response and wide in adjustment range.

Description

technical field [0001] The invention relates to the technical field of power factor adjustment, in particular to an intelligent compensation device for improving power factor and a control method thereof. Background technique [0002] Generally, there are inductive loads inside the electrical equipment when it is working. Taking the air conditioner as an example, there are a large number of inductive loads (compressors, outdoor fans, and indoor fans) inside. In the process of adjusting the temperature of the room, the air conditioner needs The inductive load will generate a large amount of reactive power during each start and stop process, resulting in a decrease in the power factor of the whole machine and poor power utilization of the air conditioner. [0003] In the prior art, there have been technical solutions to improve the power factor, by connecting fixed capacitors in parallel with electrical equipment. This method needs to configure specific parallel capacitors for...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCH02J3/1821Y02E40/30
Inventor 李秀元安瑜波刘振邦冯译飞何哲
Owner GREE ELECTRIC APPLIANCES INC
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