Hall-free ceiling fan motor controller and starting method thereof

Abstract

The invention discloses a hall-free ceiling fan motor controller and a starting method thereof. Power is supplied by a power supply module, and an SOC control module controls a hall-free motor drive module to drive a hall-free motor to be started. The method comprises the steps that a, an inverter circuit drives any two phases of the hall-free motor to be switched on, thereby enabling a rotor to be located; b, an angle speed value is preset, subareas are determined according to the preset angle speed value, s switching sequence of six MOS transistors is obtained, a rotating magnetic field is generated, and the rotor is driven to rotate under the effect of the rotating magnetic field; and c, the SOC control module controls the hall-free motor drive module to be switched from an open loop state to a closed loop state, signals of a closed loop circuit are received, the location of the rotor is detected and the signals are fed back to the SOC control module for closed loop control. According to the design of the controller and the method, the motor can be started stably; reverse rotation is avoided; the hall-free brushless motor does not need to replace a hall sensor and an electric brush; the service life is greatly increased; and moreover, the labour force is reduced.

Description

technical field [0001] The invention relates to a motor controller and a starting method thereof, in particular to a Hallless ceiling fan motor controller and a starting method thereof. Background technique [0002] In the current field of industrial automation, brushed DC motors have been gradually replaced by brushless DC motors. Among the equipment imported from abroad, it is rare to see a system that uses a brushed DC motor as an executive motor. Related companies in some countries (such as the United States, the United Kingdom, Japan, Germany, etc.) have no longer mass-produced brushed DC motors for servo drives. brushed DC motor. Brushless DC motors have been widely used in aerospace, electric propulsion systems, industrial automation equipment, office automation equipment, electric vehicles, medical equipment, and computer peripheral equipment. At the same time, the application of DC brushless motors has also penetrated into the civilian field, and its quantity and ...

AI Technical Summary

Problems solved by technology

However, the disadvantage of using the Hall sensor is that it increases the size and cost of the motor, and the motor has many connections, which is susceptible to interference. Working in harsh working environments such as high temperature, high humidity, and dirty air will reduce the reliability of the sensor. The installation accuracy of the sensor is directly affect the performance of the motor

[0004] Today's brushless DC motors can be driven without a Hall sensor, but the biggest problem with this method is that there is no Hall sensor to detect the rotor position, resulting in poor startup or even failure to start

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