Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hybrid accumulator for elevator and control method thereof

A hybrid energy storage and charging control technology, applied in circuit devices, battery circuit devices, motor generator control, etc., can solve the problems of not providing energy storage device combination scheme and energy management method, prolonging the discharge time of emergency power supply, etc. Achieve the effect of reducing the number of small charge and discharge cycles, optimizing the charging and discharging process, and fast charging and discharging speed

Inactive Publication Date: 2006-09-20
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF2 Cites 25 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid accumulator for elevator and control method thereof
  • Hybrid accumulator for elevator and control method thereof
  • Hybrid accumulator for elevator and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0052] Such as 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 grid is rectified by the rectifier 200, the output terminal is connected to the DC bus 11, the bus filter capacitor 300 filters the DC bus 11, the input terminal of the frequency converter 901 is connected to the DC bus 11, and the output three-phase AC drives the motor and its load 902.

[0053]The hybrid energy storage device for elevators of the present invention includes a supercapacitor bank 10, a battery pack 20, a supercapacitor charging...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The mixed energy storage device for elevator includes super capacitor bank, accumulator set, super capacitor charging and discharging circuit, charging and discharging circuit for accumulator, circuit for controlling charging and discharging super capacitor, circuit for controlling charging accumulator, and circuit for controlling discharging accumulator. Through super capacitor charging and discharging circuit, DC bus is connected to super capacitor bank; and through charging circuit for accumulator, the super capacitor bank is connected to the accumulator set. Thus, energy flows to the accumulator set from the super capacitor bank. Through discharging circuit for accumulator, accumulator set is connected to DC bus; and energy flows to DC bus from the accumulator set. The invention realizes uninterrupted power supply and power buffering. Features are: minimizing installed capacity of super capacitor bank and accumulator set, optimizing working state, and prolonging service life.

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 frequency converter is controlled to work in a variable voltage and frequency conversion mode to output three-phase AC power to drive the elevator motor. In this power supply system, due to the strong nonlinearity of the motor, large power will be drawn from the DC bus during startup and acceleration, resulting in a decrease in bus voltage; In this state, power is fed to the DC bus, causing the bus voltage to increase. If the DC bus voltage fluctuates too much, it will affect the working performance of the frequency converter and elevator auxiliary equipment. Th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02J7/00H02J7/32H02J7/34H02J15/00H02P3/18
Inventor 齐智平唐西胜冯之钺韦统振王司博
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com