The present invention relates to a device for recovering, storing and retrieving electricity for a handling door with a flexible curtain.
When an industrial system is produced driving a mechanical load via an electric motor with alternating current, we see two possible operating cases, namely:
To date, several possible solutions exist regarding the control mode for the electric motors of an industrial system, namely:
The device for recovering, storing and retrieving electricity according to the present invention aims on the one hand to store the energy from the decelerations of an electromechanical system, and on the other hand to retrieve that energy during the following acceleration of said electromechanical system during movements between an opening and closing position of the flexible curtain of a handling door.
The device for recovering, storing and retrieving electricity according to the present invention consists of a management interface connected on the one hand to a frequency inverter, and on the other hand to a logic control board controlling the opening and closing of the flexible curtain of a handling door, said management interface including at least two power capacitors connected to the grid by means of a first parallel connection, then connected to the grid during use of the energy by a serial connection in order to make it possible to store the energy from the decelerations and to retrieve said energy either during the following acceleration during opening of the flexible curtain or, in case of failure, to ensure sufficient opening of said flexible curtain of the handling door.
The device for recovering, storing and retrieving electricity according to the present invention comprises a management interface including a power transistor allowing voltage regulation.
The device for recovering, storing and retrieving electricity according to the present invention comprises a frequency inverter including a power supply input that is connected to the single- or three-phase alternating current power supply grid, a rectifier bridge for turning the alternating voltage into a direct voltage, and a solid-state system making it possible to re-transform the current into three alternating phases.
The device for recovering, storing and retrieving electricity according to the present invention comprises a frequency inverter including connection terminals allowing the connection of an electric motor belonging to a handling door to ensure movements between an open position and a closed position of a flexible curtain.
The following description, done in light of the appended drawings, provided as non-limiting examples, will make it possible to better understand the invention, the features thereof and the advantages it may procure:
The frequency inverter VF includes a power supply input 11 of the system that is connected to the single- or three-phase alternating current power supply grid.
The frequency inverter VF comprises a rectifier bridge 12 for rectifying the alternating voltage into direct voltage.
The frequency inverter VF includes a solid-state system 14 making it possible to re-transform the current into three alternating phases.
The frequency inverter VF is made up of a connection terminal 15 allowing the connection of an electric motor, not shown, belonging to a handling door to ensure the movements between an open position and a closed position of a flexible curtain.
The frequency inverter VF comprises a filtering and power supply element 16 of the ventilation and control system of the device for recovering, storing and retrieving electricity 10.
The management interface IG includes two power capacitors C1, C2 whereof the capacity is sufficient to provide a backup power supply in case of failure of the handling door and to allow opening of the flexible curtain.
The two capacitors C1, C2 of the management interface IG are connected to the grid by means of the first parallel connection, then connected to the grid during use of the energy by a serial connection.
The voltage regulation is done by a power transistor T1.
The management interface IG is connected to a control logic board CC connected to the opening and closing control system of the handling door.
Thus, the management interface IG must be capable of operating independently and making operating decisions on the basis of voltage fluctuations observable on the direct current grid inside the frequency inverter VF.
The normal operating voltage level U of the direct grid is set by the electric power supply through the rectifier bridge 12 of the frequency inverter VF.
The device for recovering, storing and retrieving electricity 10 according to the present invention makes it possible to store energy from decelerations and to retrieve said energy either during the following acceleration during opening of the flexible curtain, or in case of failure to ensure sufficient opening of the flexible curtain of the handling door.
It must also be understood that the preceding description has been provided solely as an example and that it in no way limits the scope of the invention; it would not be outside the scope of the invention to replace the described embodiment details with any other equivalent means.
Number | Date | Country | Kind |
---|---|---|---|
1354163 | May 2013 | FR | national |
Number | Date | Country | |
---|---|---|---|
61820250 | May 2013 | US |