Elevator energy accumulation control device and method

Abstract

The invention provides an elevator energy accumulation control device and method. The device comprises a bus voltage dynamic control unit, a rectification control unit, an energy accumulation discharging unit and an inversion control unit. The bus voltage dynamic control unit is used for detecting the running state of an elevator, direct-current bus voltage of an elevator power supply system and energy accumulation voltage stored by the energy accumulation discharging unit in real time and sending out a rectification control instruction or a power supply control instruction. The rectificationcontrol unit is used for rectifying a commercial power alternative-current source into first direct current according to the rectification control instruction. The energy accumulation discharging unitis used for storing the first direct current or outputting second direct current according to the power supply control instruction. The inversion control unit is used for converting the second directcurrent into third direct current according to the power supply control instruction for use of a motor of the elevator. By means of the elevator energy accumulation control device, feedback electricenergy of the elevator can be stored and consumed in next time running, and feedback and contamination to a power grid can be avoided; and meanwhile, the electricity consumption of power meters of users can be reduced, and it is beneficial for users to configuration of power supply capacity.

Description

technical field [0001] The invention relates to the technical field of elevator operation, in particular to an elevator energy storage control device and a control method thereof. Background technique [0002] The elevator is an unbalanced system of the car and the counterweight, which belongs to the potential energy load, and the direction of the load moment changes with the load of the car. When the elevator goes up with no load (the weight of the car is less than the weight of the counterweight), goes down with a full load (the weight of the car is greater than the weight of the counterweight) or decelerates and stops before leveling, the drive motor is in the regenerative braking state. When mechanical energy is converted into electrical energy. In traditional elevators, during this process, high-power energy-consuming resistors are often used to consume this part of the electric energy, which not only wastes this part of electric energy, but also generates a lot of hea...

AI Technical Summary

Problems solved by technology

However, in the existing elevators equipped with energy feedback function, the output power will fluctuate greatly during acceleration and deceleration, which will have a large impact on the power grid; and the energy feedback technology in the existing elevators is real-time feedback, which will input harmonics to the power grid at the same time , which is a kind of pollution to the grid

Moreover, most of the existing power meters are one-way billing. The energy fed back by the elevator operation will not reverse the user’s electricity consumption, and the actual electricity bill will not be reduced. For the user, the energy fed back by the elevator does not produce actual economic value.

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