Variable-speed fan group power supply device and energy management method thereof

Abstract

A power supply with electrical energy management, applied to variable speed blowing devices includes a rectification unit with a power factor correction function, a DC voltage stabilizing unit, a control unit, an input unit, a communication unit, at least one DC voltage regulator unit with an electrical energy measuring function, and at least one variable speed blowing devices. The rectification unit and the DC voltage stabilizing unit can use AC and DC as the power sources, respectively. The control unit utilizes the input information of the input unit and the electrical energy measuring information of the at least one DC voltage regulator unit to adjusts the output terminal voltages of the at least one DC output voltage regulator unit via applying a priority method, so that the load-shedding operation of the variable speed blowing device can be performed to meet the optimal regional demand control.

Description

technical field [0001] The invention relates to a power supply device and a control method for energy management, in particular to a power supply device and an energy-saving control method applied to variable-speed fan groups, which can optimize energy-saving control conditions to achieve regional demand control. Background technique [0002] The power supply and control architecture of the existing variable speed fan group, such as figure 1 As shown, when the fan group controls the air volume, if the cooling and heating air volume is adjusted according to the set temperature value, the central control system can send the fan speed command to the communication unit of the fan in each area or the control unit (such as from the control panel) Select air volume strong, medium, weak) to manually input a speed command, and then make the variable frequency drive unit adjust the fan speed to change the air volume. [0003] At present, most of the existing variable frequency drive ...

AI Technical Summary

Problems solved by technology

The scheduling control command of the existing variable-speed fan group is inflexible, which may destroy the original fan speed command set by the energy management system according to the regional environmental conditions, and the energy management system will fail as a result, resulting in overcooling or overheating of the ambient temperature in some regions The abnormal rise and fall situation makes the air-conditioning environment uncomfortable and cannot achieve the demand control mechanism

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