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Hybrid energy-storage device for elevator and its controlling method

A hybrid energy storage, charge-discharge control technology, applied in circuit devices, battery circuit devices, motor-generator control, etc., can solve the problems of prolonging the discharge time of emergency power sources, not providing a combination scheme of energy storage devices and energy management methods, etc. , to achieve the effect of optimizing the charging and discharging process, good technical performance, and fast charging and discharging speed

Inactive Publication Date: 2010-05-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the elevator emergency power supply device disclosed in U.S. Patent US6938733B2, in order to prolong the discharge time of the emergency power supply, the patent proposes a design method using a combination of a rechargeable battery and a supercapacitor, but does not provide a specific combination of the two energy storage devices and energy management method

Method used

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  • Hybrid energy-storage device for elevator and its controlling method
  • Hybrid energy-storage device for elevator and its controlling method
  • Hybrid energy-storage device for elevator and its controlling method

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0047] like figure 1 As shown, the elevator device of the present invention includes a rectifier 200 , a DC bus 11 , a bus filter capacitor 300 , a discharge circuit 100 , a frequency converter 901 , a motor and its load 902 . Wherein, the bleed circuit 100 is connected in parallel with the DC bus 11 , and includes a bleed resistor 101 and a bleed control switch 102 . The three-phase AC power of the power grid is rectified by the rectifier 200, and the output is supplied to the DC bus 11. The bus filter capacitor 300 filters the bus 11. The input terminal of the frequency converter 901 is connected to the DC bus 11. The three-phase AC drive motor output by the frequency converter 901 and its Load 902.

[0048] The hybrid energy storage device for elevators of the present invention includes a supercapacitor bank 10, a battery pack 20, a superc...

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Abstract

The hybrid energy-storing device for elevator comprises: a super capacitor bank [10], a battery bank [20], a charge-discharge circuit [30] / [40] for [10] / [20], and a control circuit [50] / [60] for [30] / [40]. Wherein, connecting [10] with dc bus bar and [20] through [30] and [40] respectively. This invention improves performance, reduces cost, and prolongs battery lifetime.

Description

technical field [0001] The invention relates to a hybrid energy storage device and a control method thereof, in particular to a hybrid energy storage device for elevators and a control method thereof. Background technique [0002] In the drive system of the elevator, the inverter drive mode is generally used. The power grid is directly rectified and connected to the DC bus to form a DC power supply system, and the inverter is controlled to work in a variable voltage and variable frequency mode to output three-phase AC power to drive the elevator motor. In this DC power supply system, due to the strong non-resistive load of the elevator motor, it will absorb a large amount of power from the DC bus when starting or accelerating, resulting in a decrease in bus voltage; Feeds power to the DC bus in the power generation state, resulting in an increase in the bus voltage. If the DC bus voltage fluctuates too much, it will affect the working performance of the frequency converter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J7/34H02J15/00H02J7/14H02P3/18
Inventor 唐西胜齐智平冯之钺韦统振王司博
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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