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Control circuit and method of motor phase

A control circuit and motor controller technology, applied in the direction of DC motor speed/torque control, control system, electrical components, etc., can solve the problem of low operating efficiency of brushless DC motors, and the inability to adjust the phase of the controller of brushless DC motors, etc. question

Active Publication Date: 2018-02-06
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Embodiments of the present invention provide a motor phase control circuit and method to at least solve the technical problem of relatively low operating efficiency of the brushless DC motor caused by the inability to adjust the phase of the controller of the brushless DC motor

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  • Control circuit and method of motor phase
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Embodiment Construction

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a motor phase control circuit and method. Wherein, the motor controller is connected to the motor, the motor controller includes a three-phase inverter and a main chip, the three-phase inverter is connected to the motor, the main chip is connected to the three-phase inverter, and the motor phase control circuit is also Including: sampling resistor, one end is connected to the three-phase inverter, and the other end is grounded; filter circuit, connected between the sampling resistor and the main chip, is used to filter out the voltage interference signal of the sampling resistor, obtain the voltage signal, and convert the voltage The signal is sent to the main chip for the main chip to adjust the phase of the motor according to the voltage signal. The invention solves the technical problem that the operation efficiency of the brushless direct current motor is relatively low due to the inability to adjust the phase of the controller of the brushless direct current motor.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor phase control circuit and method. Background technique [0002] With the development of permanent magnet materials, power electronics technology, and advanced control technology, brushless DC motors are widely used in national defense, industrial and agricultural production, and daily life due to their advantages such as simple structure, light weight, small size, low loss, and high efficiency. . Due to the excellent characteristics of brushless DC motors, various household appliances such as refrigerators, air conditioner compressors, and fans have replaced the previous motors with brushless DC motors. The efficiency of the brushless DC motor is related to its phase, and the phase of the existing brushless DC motor is mainly related to its Hall position. Since the Hall position of the brushless DC motor must be fixed, its phase cannot be adjusted, so the brushless DC motor can on...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P7/298
Inventor 光宣亮郭伟林胡安永吴文贤张敏
Owner GREE ELECTRIC APPLIANCES INC
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