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Brushless motor controller and method for controlling brushless motor

A motor controller, motor control technology, applied in control systems, AC motor control, single motor speed/torque control, etc., can solve problems such as large switching losses, achieve high-efficiency performance, less torque ripple, operation method smooth effect

Inactive Publication Date: 2017-02-01
RICH LIFE CONSULTANTS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the switching loss involved in sine wave drive is relatively large because of the frequent switching action during motor rotation

Method used

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  • Brushless motor controller and method for controlling brushless motor
  • Brushless motor controller and method for controlling brushless motor
  • Brushless motor controller and method for controlling brushless motor

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Embodiment Construction

[0045] In the claims and the foregoing description of the invention, unless the context requires (whether because of language express or necessary implication), the word "comprises" or other variations such as "comprises" are used in a broad sense, namely for Indicating that the specification has the stated features does not preclude having or adding other further features in various embodiments.

[0046] Unless otherwise stated, "coupled" or "connected" as used herein and in the claims means electrically coupled, or connected directly or indirectly via one or more electrical means.

[0047] refer to figure 1 The structure of the brushless motor 38 is shown. According to an embodiment of the present invention, the brushless motor 38 may be connected to a brushless motor controller (not shown). Brushless motor 38 includes first endshield 20 , motor fan 24 , rotor assembly 36 , stator assembly 26 , and second endshield 32 ; all aligned along the middle axis of motor 38 when as...

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Abstract

The invention describes a brushless motor controller. The brushless motor controller comprises a microcontroller and a plurality of motor driving circuits, wherein the microcontroller is suitably connected with one or more rotors of an external brushless motor, the plurality of motor driving circuits are suitably connected with a plurality of windings of the external brushless motor, the microcontroller is connected with plurality of the motor driving circuits and is suitably used for outputting one of a first motor control signal and a second motor control signal to the plurality of motor driving circuits according to an ideal speed of the external brushless motor so as to drive the external brushless motor, and the first motor control signal and the second motor control signal have different waveform shapes. The invention provides an elastic method for changing a control method of the brushless motor, and the advantages of sine wave driving and square wave driving are combined.

Description

technical field [0001] The invention relates to a brushless motor, in particular to a controller for the brushless motor and a control method for the brushless motor. Background technique [0002] As the world continues to focus on energy-saving issues, brushless direct current (DC) motors are increasingly used in various occasions, such as in modern home appliances. Compared with traditional brushed motors, brushless DC motors have the advantages of low noise, high energy efficiency and durability. [0003] A brushless DC motor is usually controlled in different phases by a motor controller connected to the motor windings. Since there is no brush and commutator structure in the brushless DC motor, the motor controller generates alternate control pulse control to maintain the motor rotation. A typical form of a control signal for a brushless motor is a Pulse Width Modulation (PWM) signal. Control signals generally come in two forms to drive a BLDC motor, square wave drive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08
CPCH02P27/08H02P6/08
Inventor 熊振声胡永健
Owner RICH LIFE CONSULTANTS LTD
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