High-pressure washer driving system and method based on brushless direct current motor

Abstract

The invention discloses a high-pressure washer driving system and method based on a brushless direct current motor. The system comprises a power supply control module, an IPM driving module and the three-phase brushless direct current motor, wherein the power supply control module is used for being externally connected with an alternating current power supply and outputting direct voltage through EMI filtering, rectification and power factor compensation; the IPM driving module is used for controlling the rotating speed of the three-phase brushless direct current motor; the three-phase brushless direct current motor is used for outputting power to a high-pressure water pump; the power supply control module outputs and supplies the high direct voltage to the IPM driving module, the IPM driving module controls the three-phase brushless direct current motor to output the power to the high-pressure water pump, energy conversion efficiency of a high-pressure washer is improved, under limits of low input currents, high power output is achieved, energy consumption is effectively reduced, a free gear speed regulation function is achieved, the high-pressure washer outputs different types of pressure and flow values, and the system and method have good application prospects.

Description

technical field [0001] The invention relates to a high-pressure cleaning machine driving system and method based on a brushless DC motor, belonging to the technical field of cleaning tools. Background technique [0002] As a cleaning tool, high-pressure cleaners are very versatile, and can be used to clean cars, floors, walls, roofs, etc.; The tap water is boosted to a certain pressure required by the customer through the high-pressure water pump. We know that the loss of the AC motor is large. Generally, the output power of the AC motor with a power of 1000W is 600W, which is very inefficient and wastes energy. In the North American market, due to the mandatory current limit for household appliances (not greater than 15A), the power of the high-pressure cleaner has been unable to increase, and the output pressure and flow of the cleaner have also been limited; therefore, how to use the limited input current? Improving the system efficiency of the cleaning machine to obtain...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the existing high-pressure cleaning machine adopts AC motor, which is inefficient, wastes energy, and the efficiency of the high-pressure cleaning machine within a limited input current is low, and the output pressure and flow are also greatly restricted.

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