Brushless DC motor controller for fan in air conditioner end equipment and control method

Abstract

The present invention provides a fan used direct current brushless motor controller in the conditioner end equipment and a control method thereof. The motor controller comprises the following components: a filtering module; a commutating module; a power factor correcting module; a power module; a control module which is connected with the output end of the power factor correcting module and the power module, samples the current information of the motor of the direct current brushless fan and the power module, and outputs to a control information to the power module according to the voltage of the output end of the power factor correcting module and the sampled current information, wherein the power module controls the operation of the motor of the direct current brushless fan according to the control information; a storing module; an accessory power supply module and an interface module. The controller of the invention has excellent energy saving effect and outputs the operation state of the fan through the interface module. The centralized monitoring to the state of the motor is conveniently realized.

Description

technical field [0001] The invention relates to a DC brushless motor controller for a fan in an air conditioner terminal device and a control method thereof. Background technique [0002] The air-conditioning terminal device involved in the present invention refers to the terminal device of the centralized air-conditioning system, which usually includes a unit composed of a casing, a fan, a heat exchanger or a filter, and the fan usually includes a motor, an impeller, and the like. The fan usually uses a small AC fan with an output power of less than 200W, such as fan coil units, fan filter units (FFU), variable air volume (VAV) system terminal devices, duct fans, etc., often need to have the adjustment function of air volume during use However, due to the low efficiency of the small AC motor attached to the small fan, the commonly used method of reducing the pressure to adjust the air volume is even less efficient. With the increase of large-scale use of air-conditioning t...

AI Technical Summary

Problems solved by technology

The fan usually uses a small AC fan with an output power of less than 200W, such as fan coil units, fan filter units (FFU), variable air volume (VAV) system terminal devices, duct fans, etc., often need to have the adjustment function of air volume during use , however, due to the low efficiency of the small AC motor attached to the small fan, the commonly used method of reducing the pressure to adjust the air volume is less efficient

With the increase of large-scale use of air-conditioning terminal devices in office buildings, hotels, shopping malls, and electronics, medicine and other industries, fans using small AC motors can no longer meet the current needs of energy saving, emission reduction and network monitoring

Images