DC brushless motor control system capable of being used for AC power supply

Abstract

The invention provides a DC brushless motor control system capable of being used for an AC power supply. The DC brushless motor control system can be electrically connected between a master control module and a DC brushless motor. The DC brushless motor control system at least comprises a switching power supply converting circuit, a voltage converting circuit, a central processing circuit, a motor driving circuit and a switching circuit. The switching power supply converting circuit is connected with an air conditioner master control module and receives an AC power. Furthermore the switching power supply converting circuit performs rectifying, voltage reduction and filtering on the AC power, thereby forming a stable DC power for operation of the DC brushless motor, so that the DC brushless motor control system converts an AC signal in an air conditioning system to a DC signal on condition that original pipeline wiring and control interfaces of a traditional air conditioning system are not changed, and furthermore the DC brushless motor is controlled for being driven, thereby realizing a purpose of saving electric power.

Description

technical field [0001] The present invention relates to a control system, in particular to a control system that converts the input AC signal into a DC signal, and then controls the DC brushless motor drive, so as to achieve the purpose of saving energy and electricity, and does not need to replace the old pipeline Control system for wiring and control interface. Background technique [0002] Nowadays, due to high energy prices and serious heat pollution, environmental protection issues continue to promote energy conservation and alternative energy sources, but the development of alternative energy sources is not easy, so the first priority is to save energy. For example, the air-conditioning system in a general building usually consumes electricity The air-conditioning system is equipped with multiple ventilation ducts and multiple blowers in each floor space to achieve the effect of adjusting the room temperature and circulating air, and the motors of these blowers are all...

AI Technical Summary

Problems solved by technology

[0005] From the above, it can be seen that because the traditional air-conditioning system uses AC signals, or other electrical equipment such as air filtration systems or dehumidification systems use AC signals, and DC brushless motors cannot read AC signals, so During construction, all pipeline wiring must be disassembled and replaced for the use of brushless DC motors. The cost of replacement is not only a waste, but the entire wiring replacement work is a complicated project. As far as the new system is concerned, it will cost a lot of control circuit costs, and it will not be possible for users to choose the control interface they are used to; therefore, how to make the old air conditioning system Switching to brushless DC motors with high power and low power consumption has always been a problem that the industry is waiting for a breakthrough.

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