Rectification control method, air conditioner and computer readable storage medium
A control method and technology of an air conditioner, which are applied in the directions of climate sustainability, conversion of AC power input to DC power output, and output power conversion devices, etc., can solve the problems of high switching loss and unreasonable switching.
Active Publication Date: 2020-10-20
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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Problems solved by technology
[0006] The main purpose of the present invention is to provide a rectification control method, an air conditioner, and a computer-readable storage medium, aiming to solve the technical problem of high switching loss caused by unreasonable switching between synchronous rectification and diode rectification in existing air conditioners
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no. 1 example
[0121] Based on the first embodiment, a second embodiment of the rectification control method of the present invention is proposed. In this embodiment, step S120 includes:
[0122] Step S121, determining whether the apparent power is less than a first preset power threshold;
[0123] Step S122, when the apparent power is less than a first preset power threshold, determine that the first working state is a diode rectification state;
[0124] Step S123, when the apparent power is greater than or equal to a first preset power threshold, determine that the first working state is a synchronous rectification state.
[0125] In this example, refer to Figure 8, when the apparent power is obtained, it is determined whether the apparent power is less than the first preset power threshold, and when the apparent power is less than the first preset power threshold, it is determined that the first working state is the diode rectification state. When the power is greater than or equal to ...
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The invention discloses a rectification control method, comprising the following steps: obtaining the current apparent power of the FPC circuit or the active power of the compressor; based on the mapping relationship between the preset power threshold and the working state of the PFC circuit , determine the first working state that matches the apparent power or active power; determine whether the first working state is consistent with the current second working state of the PFC circuit; When the second working state is inconsistent, switch the working state of the PFC circuit to the first working state. The invention also discloses an air conditioner and a computer-readable storage medium. The present invention can reasonably realize the switching between the diode rectification state and the synchronous rectification state according to the apparent power or active power, and then reasonably switch the rectification mode of the FPC circuit according to the weight of the load, so as to reduce the switching loss of the FPC circuit and improve the performance of the air conditioner. energy efficiency.
Description
technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a rectification control method, an air conditioner and a computer-readable storage medium. Background technique [0002] With the development of power electronics technology, active PFC (Power Factor Correction, power factor correction) technology has been widely used due to its advantages of high power factor, small harmonic current, and stable output voltage. At present, the BOOST type PFC is generally used. This kind of PFC has a simple structure and convenient control, but its efficiency is relatively low. Therefore, in some occasions that require high efficiency, a bridgeless totem pole PFC circuit is used, which reduces the number of devices on the loop and improves efficiency. [0003] Currently, in an air conditioner equipped with a PFC circuit, the rectification methods of the outdoor unit include synchronous rectification and diode rectification. Amon...
Claims
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IPC IPC(8): H02M7/219H02M1/42
CPCH02M1/4208H02M1/4233H02M7/219H02M1/0048H02M7/2195Y02B70/10
Inventor 李曹磊
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD