Elevator energy-saving device based on cooperative control mode

Abstract

The invention discloses an elevator energy-saving device based on a cooperative control mode, which comprises an energy storage device (20), an energy storage device state detector (21), a charging and discharging circuit (19), an energy storage device controller (22), an energy consumption circuit (5), an energy consumption controller (18) and a cooperative controller, wherein the cooperative controller is used for realizing the cooperation and matching of a charging process of the energy storage device and an energy consumption process of the energy consumption circuit; instruction values of the energy storage device controller and the energy consumption controller are generated by the cooperative controller according to a running condition of an elevator; and according to the instruction values, the charging process of the energy storage device (20) and the energy consumption process of the energy consumption circuit (5) are performed in the cooperative control mode. The elevator energy-saving device can be used for realizing the energy conservation of the elevator, efficiently relieving fierce fluctuation of a bus voltage and coping with a specific situation that a regenerated current or regenerated power of an elevator motor is beyond an allowed scope of the energy storage device (20) and the charging and discharging circuit (19).

Description

technical field [0001] The invention relates to an elevator energy-saving device, in particular to an elevator energy-saving device that controls an energy storage device and a regeneration circuit in a coordinated manner. Background technique [0002] In recent years, it has become a research hotspot in the elevator industry to use the energy storage device added in the main loop of the elevator drive to process the regenerative energy generated during the operation of the elevator and realize the energy saving of the elevator. Such as Chinese Invention Patent Application Publications CN 101381046A, CN 1845417A, CN1946625A, Chinese Invention Patent Specifications CN 100593504C, CN 100450907C, CN1229275C and International Application Specifications WO2010 / 019122A1, WO2010 / 019123A1, WO2010 / 019271WO, etc. [0003] Through proper control, the energy storage device stores regenerative energy during the regenerative operation of the elevator motor, and releases the stored energy ...

AI Technical Summary

Problems solved by technology

This control method simultaneously controls the power supply power of the electric energy storage device and the power supply power of the mains, showing the embryonic form of the collaborative control idea. Unfortunately, there is also the "duty cycle of the preset value" in the Chinese invention patent specification CN1229275C. Basically, it is adjusted by increasing or decreasing a variable amount of DT instead of continuous change" and "the current control method is too simple, and the overall control performance needs to be improved" and other shortcomings

In addition, this control method is only a recessive embodiment of the idea of ​​collaborative control, and it does not carry out in-depth, clear, and detailed analysis and elaboration of the idea of ​​collaborative control, and it is only for the power supply of electric energy storage devices and the power supply of mains power. The power control problem does not involve the coordinated control of the charging process of the energy storage device and the energy consumption process of the energy consumption circuit

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