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A Calculation Method of Inverter Air Conditioner Power Consumption

A technology of power consumption and calculation method, which is applied in the direction of refrigeration safety arrangements, refrigerators, lighting and heating equipment, etc., can solve the problems of inverter air conditioners not calculating their own power consumption and increasing the cost of air conditioning, so as to improve market competitiveness and facilitate energy saving Controlled, easy-to-achieve effects

Active Publication Date: 2019-09-17
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The current inverter air conditioner does not have the function of calculating its own power consumption. If an external power meter is used to detect the power consumption of the air conditioner, the cost of the air conditioner will be increased.

Method used

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  • A Calculation Method of Inverter Air Conditioner Power Consumption
  • A Calculation Method of Inverter Air Conditioner Power Consumption

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Embodiment Construction

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] The method for calculating the power consumption of the frequency conversion air conditioner of the present invention is a power calculation method performed on the hardware of the existing frequency conversion air conditioner. see figure 1 As shown, the frequency converter of the existing air conditioner mainly includes a power supply 4, a rectifier 5, a filter capacitor 6, a frequency conversion module 7, and a compressor 8 connected in sequence, and a current detection element for detecting the input current of the compressor 8 is provided on the frequency converter; The current detection element is a current sensor 1 or a sampling resistor 2 connected in series with the lower bridge arm of the frequency conversion module or a sampling...

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Abstract

The invention discloses a method for calculating power consumption of a variable-frequency air conditioner. An electric current detection element for detecting input electric current of a compressor is arranged in the air conditioner. The method comprises steps as follows: the input electric current of the compressor is acquired and subjected to Clark conversion and Park conversion, and d-axis electric current and q-axis electric current are acquired; d-axis voltage and q-axis voltage are calculated; input power of the compressor is calculated; input power of a frequency converter is calculated; a preset fan speed-fan power consumption comparison table is inquired, and fan power consumption is obtained; a sum of the input power of the frequency converter and the fan power consumption is calculated. According to the method for calculating the power consumption of the variable-frequency air conditioner, under the condition that hardware cost of the air conditioner is not increased, total power consumption of the air conditioner is conveniently obtained by an air conditioner controller, the market competitiveness of the air conditioner is improved, and follow-up energy conservation control of the air conditioner is facilitated; besides, the method adopts a magnetic-field oriented vector control technology for calculation, and is simple, easy and convenient to implement.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a method for calculating the power consumption of a variable frequency air conditioner. Background technique [0002] At present, air conditioners are installed in most buildings or homes. In order to save energy and to use electricity safely, during peak electricity consumption, it is necessary to determine energy-saving control strategies based on the power consumption of various electrical appliances including air conditioners to reduce energy consumption. The electricity load is prevented from exceeding the upper limit of the electricity load of the building or family. Therefore, it is necessary to obtain the power consumption information of the inverter air conditioner. [0003] The current inverter air conditioner does not have the function of calculating its own power consumption. If an external power metering device, such as a power meter and an elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/47F25B49/02
Inventor 耿焱时斌朱东涛肖成进国德防
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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