Operation control method, device, circuit, home appliance and computer storage medium
A technology for operation control and drive control circuits, which is applied in the field of home appliances and computer-readable storage media, and can solve problems such as large fluctuations in DC bus voltage, rising costs, and large fluctuations in load current.
Active Publication Date: 2021-05-11
GD MIDEA AIR CONDITIONING EQUIP CO LTD +1
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Problems solved by technology
[0004] First, the DC bus voltage fluctuates greatly, causing the load current to fluctuate greatly and the peak value of the load current to be high. Therefore, it is necessary to set a higher specification overcurrent protection for the power module, resulting in an increase in cost;
[0005] Second, there is a periodic phenomenon that the voltage of the bus with the same power frequency is insufficient and unable to output power, resulting in problems such as beat frequency noise
Method used
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[0217] (1) The filter inductance L is also provided with an inductive element, and the inductive element is connected in series to at least one AC line (such as Figure 29 and Figure 30 as shown, Figure 35 and Figure 36 As shown), the inductive element is a filter inductor L, through which the clutter in the power supply signal carried by the AC line is filtered.
[0218] (2) The filter inductor L is connected in series with the high-voltage bus (such as Figure 33 and Figure 34 as shown, Figure 37 and Figure 38 shown) and / or the low-voltage busbar (such as Figure 31 and Figure 32 as shown, Figure 39 and Figure 40 shown), the DC line carrying signal is the DC signal, wherein the inductance of the inductive element ranges from 200uH to 25mH.
[0219] In this embodiment, the inductive element is connected in series on the voltage busbar and / or the low-voltage busbar of the DC measurement in the drive control circuit, the inductive element is a filter inductor...
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The present invention provides an operation control method, device, circuit, home appliance and computer storage medium, wherein the method includes: detecting the power supply signal and the load voltage of the first capacitive element; comparing the power supply signal and the load voltage of the first capacitive element in real time The size relationship between the power supply signal thresholds; according to the size relationship and the voltage of the first capacitive element, determine whether to control the first capacitive element to perform voltage compensation on the inverter, wherein the inverter An inverter is connected between the first capacitive element and the load, and the inverter is configured to drive the load to run. By performing voltage compensation on the inverter, the occurrence of the periodic phenomenon that the bus voltage is insufficient and unable to output power in the related art is avoided, thereby avoiding the occurrence of beat frequency noise.
Description
technical field [0001] The present invention relates to the field of drive control, in particular to an operation control method, an operation control device, a drive control circuit, a household electrical appliance, and a computer-readable storage medium. Background technique [0002] Generally speaking, the power factor of a passive PFC (Power Factor Correction, power factor correction) circuit is very low, and a capacitor with a large capacity needs to be used, resulting in a high cost of the passive PFC circuit. [0003] For the general circuit method without electrolytic capacitors, it has the following disadvantages: [0004] First, the DC bus voltage fluctuates greatly, causing the load current to fluctuate greatly and the peak value of the load current to be high. Therefore, it is necessary to set a higher specification overcurrent protection for the power module, resulting in an increase in cost; [0005] Second, there is a periodic phenomenon that the voltage of ...
Claims
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IPC IPC(8): H02M1/42
CPCY02B70/10
Inventor 黄招彬时崎久曾贤杰梁国强霍军亚
Owner GD MIDEA AIR CONDITIONING EQUIP CO LTD