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Control method and control apparatus for motor, and fan

A control method and control device technology, applied in the field of motor control devices and fans, can solve the problems of increased cost of the motor body and controller, complex control algorithm requirements, product reliability and stability effects, etc., to ensure accuracy, Reduce production costs and avoid the effects of control anomalies

Active Publication Date: 2016-12-07
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

DC frequency conversion technology usually uses permanent magnet synchronous motors. Compared with asynchronous motors and brushless DC motors, permanent magnet synchronous motors have better performance, but the cost of the motor body and controller has increased, and the requirements for control algorithms are also higher. quite complicated
[0003] At the same time, since the outdoor fans of the multi-connected air-conditioning system and heat pump air-conditioning system generally control the air volume with the frequency as the control target, it is also more complicated to be affected by the external environment, especially at the start-up stage. have a greater impact on stability

Method used

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  • Control method and control apparatus for motor, and fan
  • Control method and control apparatus for motor, and fan
  • Control method and control apparatus for motor, and fan

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Embodiment Construction

[0051] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0052] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0053] figure 1 A schematic flow chart of the motor control method according to the first embodiment of the present invention is shown.

[0054] like figure 1 As shown, the motor control method ac...

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Abstract

The invention provides a control method and a control apparatus for a motor, and a fan. The control method for the motor comprises the steps of detecting whether the phase current of the motor reaches a zero crossing point or not; and when it is detected that the phase current of the motor reaches the zero crossing point, adjusting the d-axis voltage of the motor to enable the phase voltage of the motor to be consistent with the phase of the phase current. By adoption of the technical scheme, the optimization of the motor efficiency can be ensured to satisfy the energy-saving control requirement; in addition, a hardware circuit also can be simplified, and the production cost of the product can be lowered; and meanwhile, the reliability and the stability of the product also can be improved.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular to a motor control method, a motor control device and a fan. Background technique [0002] As users have higher and higher requirements for energy saving, environmental protection and comfort of household appliances, DC frequency conversion technology is becoming more and more popular in the household appliance industry. DC frequency conversion technology usually uses permanent magnet synchronous motors. Compared with asynchronous motors and brushless DC motors, permanent magnet synchronous motors have better performance, but the cost of the motor body and controller has increased, and the requirements for control algorithms are also higher. quite complicated. [0003] At the same time, since the outdoor fans of the multi-split air-conditioning system and heat pump air-conditioning system generally control the air volume with the frequency as the control target, it is also m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/06
CPCH02P21/06
Inventor 周超
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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