Micro power consumption elevator

Abstract

The invention relates to a micro power consumption elevator, which comprises a motor, a frequency converter and an encoder. The micro power consumption elevator is characterized by further comprising a super-capacitor component, wherein an positive electrode of the super-capacitor component is connected with a positive electrode input end of the frequency converter; an negative electrode of the super-capacitor component is connected with a positive electrode input end of the frequency converter; in a motor power generation state, the super-capacitor component stores the electric energy generated by the motor, and in a motor electro-motion state, the super-capacitor component supplies power to the motor for running; and an energy supplement device charges the super-capacitor component when the working voltage of the super-capacitor component is lower than a designed voltage lower limit value. The micro power consumption elevator has the advantages that the super-capacitor component is used as a main power supply carrier for continuously supplying power to the elevator and the super-capacitor component not only serves as an energy storage element but also serves as a battery and makes full use of the electric energy generated in the running process of the elevator so that a brake unit (or a brake resistor) is unnecessary to be arranged in the elevator, an inverter is also unnecessary to be arranged in the elevator, not only the equipment cost is saved, but also thermal pollutions and harmonic noise pollutions are avoided, and the micro power consumption elevator is more energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to an elevator device, in particular to an elevator with low energy consumption using a supercapacitor as an energy storage carrier. Background technique [0002] The elevator has two states during operation: the state of "electric operation" and the state of "power generation operation". When the elevator is fully loaded, the elevator is in the electric running state (electrical energy is converted into mechanical energy), and the main power supply is usually industrial power (such as 380V AC) as the continuous power supply, in order to ensure that the elevator can be normally leveled when the power is cut off instantly. , it is necessary to configure an uninterruptible power supply. In order to ensure that the elevator can operate normally during a power failure, a backup power supply (such as a self-contained generator) is configured on the elevator system; Converted into electrical energy), the electrical energy passes throug...

AI Technical Summary

Problems solved by technology

However, in the above two patents, the main power supply for continuous power supply to the elevator is still a traditional AC power supply, and the main power supply system of the elevator still depends on the power grid. The reliability and stability of the power grid determine the operating performance of the elevator. Most of the time, the supercapacitor does not work, and the energy stored in the supercapacitor must be released after it is fully charged, or the battery is used for secondary storage, resulting in waste of resources and electric energy; Used as an auxiliary power supply and a backup power supply, it supplies power to the elevator only when the elevator has a power failure or power failure. The supercapacitor stores the electric energy generated during the operation of the elevator. The main power supply equipment and auxiliary power supply equipment must be installed at the same time, which makes the power supply system bulky, and requires complex peripheral circuits such as voltage regulators, which increases the cost.

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