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Adjusting circuit, control method and device, control circuit, household appliance and medium

A control method and voltage regulation circuit technology, applied in motor control, motor generator control, AC motor control, etc., can solve the problems of low operating efficiency of permanent magnet motors and inability to meet bus voltage regulation, and achieve the effect of improving operating efficiency

Pending Publication Date: 2020-07-03
MIDEA GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For loads such as permanent magnet motors, the higher the bus voltage output by the drive control circuit, the greater the iron loss of the motor, and the lower the bus voltage, the smaller the iron loss of the motor. Therefore, the iron loss can be reduced by reducing the bus voltage. However, the power factor correction circuit in the related art only has a step-up function or a step-down function, which cannot meet the demand for bus voltage regulation, thus resulting in low operating efficiency of the permanent magnet motor

Method used

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  • Adjusting circuit, control method and device, control circuit, household appliance and medium
  • Adjusting circuit, control method and device, control circuit, household appliance and medium
  • Adjusting circuit, control method and device, control circuit, household appliance and medium

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Embodiment 1

[0113] Such as figure 1 As shown, in the above embodiment, the first electrode of the first power transistor Q1 is connected to the high voltage output terminal DC+, the second electrode of the first power transistor Q1 is connected to the first electrode of the second power transistor Q2, and the second power transistor The second electrode of Q2 is connected to the low-voltage output terminal DC-; the designated position is the connection point between the first power transistor Q1 and the second power transistor Q2; the first electrode of the third power transistor Q3 and the first electrode of the fourth power transistor Q4 The two electrodes are configured as output ends of the bus voltage, the second electrode of the third power transistor Q3 is connected to the first electrode of the fourth power transistor Q4, and the second electrode of the fourth power transistor is connected to the second power transistor.

[0114] In this embodiment, as the first arrangement of the...

Embodiment 2

[0118] Such as figure 2 As shown, in the above embodiment, the first electrode of the second power transistor Q2 is connected to the high voltage output terminal DC+, the second electrode of the second power transistor Q2 is connected to the first electrode of the first power transistor Q1, and the first power transistor The second electrode of Q1 is connected to the low-voltage output terminal DC-; the designated position is the connection point between the first power transistor Q1 and the second power transistor Q2; the first electrode of the fourth power transistor Q4 is connected to the first electrode of the third power transistor Q3 The two electrodes are configured as output terminals of the bus voltage, the second electrode of the fourth power transistor Q4 is connected to the first electrode of the third power transistor Q3, and the second electrode of the fourth power transistor is connected to the second power transistor.

[0119] In this embodiment, as the second...

Embodiment 3

[0124] Such as image 3 As shown, in the above embodiment, the first electrode of the second power transistor Q2 is connected to the high voltage output terminal DC+, the second electrode of the second power transistor Q2 is connected to the first electrode of the first power transistor Q1, and the first power transistor The second electrode of Q1 is connected to the low-voltage output terminal DC-; the designated position is the first electrode of the second power transistor Q2; the first electrode of the third power transistor Q3 and the second electrode of the fourth power transistor Q4 are configured as the bus voltage The second electrode of the third power transistor Q3 is connected to the first electrode of the fourth power transistor Q4, and the second electrode of the fourth power transistor is connected between the first power transistor and the second power transistor.

[0125] In this embodiment, as the third arrangement of the power factor correction module 20, co...

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PUM

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Abstract

The invention provides an adjusting circuit, a control method and device, a control circuit, household appliances and a medium. The adjusting circuit comprises an uncontrolled rectification module. The uncontrolled rectification module is suitable for configuring an alternating current signal of an alternating current power supply into a direct current signal. The uncontrolled rectification moduleis provided with a low-voltage output end and a high-voltage output end for outputting direct-current signals; and the power factor correction module is electrically connected with the uncontrolled rectification module, comprises a first half-bridge assembly and a second half-bridge assembly, and is suitable for configuring the direct-current signal into a bus voltage according to the switch control signal, and the bus voltage is boosted or reduced relative to the direct-current signal. According to the technical scheme provided by the invention, by reasonably setting the switch control signal, the stable change of the current when the PFC module is switched between buck and boost can be ensured, and the PFC efficiency can be improved.

Description

technical field [0001] The present invention relates to the field of switch control circuits, in particular, to a voltage regulation circuit, a control method of the voltage regulation circuit, a control device of the voltage regulation circuit, a drive control circuit, a household appliance and a computer readable storage medium. Background technique [0002] For loads such as permanent magnet motors, the higher the bus voltage output by the drive control circuit, the greater the iron loss of the motor, and the lower the bus voltage, the smaller the iron loss of the motor. Therefore, the iron loss can be reduced by reducing the bus voltage. However, the power factor correction circuit in the related art only has a step-up function or a step-down function, which cannot meet the requirement for bus voltage regulation, thus resulting in low operating efficiency of the permanent magnet motor. Contents of the invention [0003] In order to solve at least one of the above tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08H02P23/26H02M5/458H02P25/022H02P6/08
CPCH02P27/085H02P23/26H02M5/458H02P25/022H02P6/08H02P2207/05H02P2201/15
Inventor 龙谭黄招彬赵鸣文先仕徐锦清张杰楠曾贤杰胡斌井上薰
Owner MIDEA GRP CO LTD