Novel energy-saving elevator using super capacitor

Abstract

The invention discloses a novel energy-saving elevator using a super capacitor. The novel energy-saving elevator comprises a cage, a traction device, an electric motor, and a control system; the control system comprises a direct current bus, a brake unit, an electric motor driving circuit, a charging circuit, a discharging circuit, and at least one super capacitor assembly; the charging circuit and the discharging circuit are connected with the super capacitor assembly through a direct current (DC) / DC bidirectional voltage converter; a sampling control driving module is used, and after operation, the voltage of the bus and the super capacitor are detected by using a pulse width modulation conversion control circuit, and voltage reduction charging and voltage raising discharging pulse-width modulation (PWM) control signals are output to the charging circuit and the discharging circuit; when the elevator reduces speed, ascends in an underloading way and descends in an overloading way, the electricity energy is stored by using the super capacitor assembly during electricity generation; and when the elevator runs, the super capacitor assembly release electricity energy to the motor, and by using direct current electricity energy stored on the super capacitor assembly, an emergency power supply is provided for the elevator through a DC / alternated current (AC) module.

Description

Technical field: [0001] The invention relates to the field of electricity, in particular to the electric power control technology of an elevator, in particular to a novel energy-saving elevator using a supercapacitor. Background technique: [0002] Elevators are devices that consume a lot of power at present. When the elevator is running with a heavy load going down, a light load going up and decelerating, it will generate potential energy and braking energy, which will be output to the busbar in the form of electric energy, which will increase the busbar voltage. The IGBT (insulated gate bipolar power tube) in the inverter has a withstand voltage limit. If the voltage is too high, the power module will be damaged and the inverter will be damaged. In the prior art, the main solutions to this problem are as follows: first, discharge through the braking resistor. This solution has simple structure, convenient installation, and low cost; the energy is consumed in the form of ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of energy-saving elevator using supercapacitors. The new type of energy-saving elevator using supercapacitors should solve the problem of the energy generated by the elevator in the prior art when it is decelerating, going up with a light load, and going down with a heavy load. Technical issues properly addressed and exploited

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