Elevator energy recovery system and method based on energy storage battery
An energy storage battery and energy recovery technology, which is applied in sustainable buildings, elevators, transportation and packaging, etc., can solve the problems of calculating more power values, large control errors, and large power fluctuations in elevator operation cycles, so as to reduce grid connection Power fluctuations, high recovery efficiency, and the effect of improving grid-connected power quality
Active Publication Date: 2020-01-07
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
These inventions are all controlled by estimating the power value at each time point in the next cycle before the elevator runs, and there are disadvantages such as large power fluctuations in the elevator running cycle, more power values need to be calculated, and large control errors.
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[0033] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0034] Such as figure 1 As shown, the elevator energy recovery system based on the energy storage battery provided by the present invention includes an elevator operating power estimation module, an energy storage battery, a grid-connected converter, an elevator frequency converter and a bidirectional DC converter. The AC side of the grid-connected converter is connected to the grid, the DC side of the grid-connected converter is connected to the DC side of the elevator inverter, the DC bus side of the ...
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The invention provides an energy storage battery based elevator energy recovery system and method. The energy storage battery based elevator energy recovery system comprises an elevator power prediction module, an energy storage battery, a grid-connected inverter and a bidirectional DC / DC converter; the elevator power prediction module is used for predicting an average power required for a next running period of an elevator according to data information before elevator running; the grid-connected inverter is used for transmitting the average power required for the next running period of the elevator; the bidirectional DC / DC converter is used for driving the energy storage battery to absorb a peak power generated during elevator running; and the energy storage battery is used for charge-discharge control according to busbar voltage fluctuation. For the energy storage battery based elevator energy recovery system and method provided by the invention, by predicting the elevator running average power, the grid-connected inverter is controlled to perform constant-power running, grid-connected power fluctuation is reduced, and the grid-connected power quality is improved; by only predicting one numerical value of the elevator running period average power, a calculation amount of the elevator power prediction module is lowered, the calculation cost is lower, and the efficiency is higher; and by using the energy storage battery and the grid-connected inverter together to recovery an electric energy, the recovery efficiency is high.
Description
technical field [0001] The invention relates to the field of elevator energy recovery, in particular to an elevator energy recovery system and method based on an energy storage battery. Background technique [0002] In recent years, with the improvement of my country's economic level, the advancement of urbanization, and the improvement of people's quality of life, my country's elevator industry has achieved rapid development. At the same time, elevator energy-saving technology has become a research hotspot in the elevator industry, especially for the utilization of regenerative energy during regenerative operation of elevator motors. One way is to convert regenerative energy into alternating current through inversion, and feed it back to the same adjacent power grid or use it for other electrical equipment; the other is DC energy storage, where the energy storage battery stores regenerative energy when the motor is regeneratively running; When the motor runs electrically, ...
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IPC IPC(8): B66B1/30
CPCB66B1/302Y02B50/00
Inventor 陈俊尧王志新秦华包龙新
Owner SHANGHAI JIAOTONG UNIV