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Motor control device and method

A motor control and phase current technology, applied in the direction of electronic commutation motor control, control system, electrical components, etc., can solve problems such as inability to meet application requirements, and achieve the effect of large active power, high efficiency, and reduced control costs

Active Publication Date: 2019-07-02
HANGZHOU SILAN MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the traditional lead angle control method has been unable to meet the existing application requirements

Method used

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  • Motor control device and method
  • Motor control device and method

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Embodiment Construction

[0060] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale. Also, some well-known parts may not be shown in the drawings.

[0061] In the following, many specific details of the present invention, such as structures, materials, dimensions, processes and techniques of components, are described for a clearer understanding of the present invention. However, the invention may be practiced without these specific details, as will be understood by those skilled in the art.

[0062] It should be understood that in the following description, a "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical or electromagnetic connections. When an element or circuit is said to be "connected to" another element or an...

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Abstract

The embodiment of the invention discloses a motor control device and method. The motor control device comprises a driving circuit for obtaining a three-phase output voltage according to an input voltage command and a stator angle to drive a motor; and an adjusting circuit for obtaining an advance angle according to a phase current signal flowing through the motor and a back EMF angle, and adjusting a stator angle according to the advance angle so that the phase current signal and the back EMF signal can automatically achieve in-phase change, thereby achieving the advance angle control in a wide working range.

Description

technical field [0001] The present invention relates to the technical field of motor control, and more particularly relates to a motor control device and a control method thereof. Background technique [0002] Brushless DC motor (Brushless Direct Current Motor) is a low-power DC motor with electronic commutation. It is structurally equivalent to a reverse-mounted DC motor, its armature is placed on the stator, and the rotor is a permanent magnet. Its armature winding is a multi-phase winding, generally three-phase, which can be connected in star or delta. The windings of each phase are respectively connected with the switching tubes in the electronic commutator circuit. [0003] The control methods of brushless DC motors are generally divided into square wave control and sine wave control. Sine wave control has the advantages of small torque fluctuation and low noise. Sine wave control includes: lead angle adjustment, vector control (Field-Oriented Control, FOC), direct t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/182
CPCH02P6/182
Inventor 何原明柳洲徐晖林建锋
Owner HANGZHOU SILAN MICROELECTRONICS
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