Title:
ENERGY RECOVERY IN CAPACITOR DEVICES THAT OPERATE REPEATEDLY
Document Type and Number:
WIPO Patent Application WO/2019/114913
Kind Code:
A3
Abstract:
When piezoelectric actuators such as capacitors are used quickly and repeatedly, for example, for similar applications, they consume a large amount of energy. The dumping of the charge thereof upon discharging is a large loss if the charge is not stored and recovered again. This invention describes techniques for preventing this loss, as an example of such cases. An additional capacitor having a high capacitance compared to the capacitance of the actuator is used to discharge the actuator and store the charge, and to recover the charge and recharge the actuator, which is done by means of a DC booster. A DC source is used for initial charging and for controlling and compensating losses resulting from leakage. The full discharge of the actuator the into the earth can be used when necessary.
Inventors:
ELGAMIL MOHAMED AHMED (EG)
Application Number:
PCT/EG2018/000035
Publication Date:
October 24, 2019
Filing Date:
December 11, 2018
Export Citation:
Assignee:
ELGAMIL MOHAMED AHMED (EG)
International Classes:
H01G4/12; H01M14/00
Foreign References:
| EP0078404B1 | 1992-04-01 | |||
| US7289312B2 | 2007-10-30 | |||
| US8531409B2 | 2013-09-10 |
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