RETRACTED: Design of New Power Management Circuit for Light Energy Harvesting System

Abstract

Nowadays, it can be observed that Wireless Sensors Networks (WSN) are taking increasingly vital roles in many applications, such as building energy monitoring and control, which is the focus of the work in this paper. However, the main challenging issue with adopting WSN technology is the use of power sources such as batteries, which have a limited lifetime. A smart solution that could tackle this problem is using Energy Harvesting technology. The work in this paper will be focused on proposing a new power management design through harvesting indoor light intensity. The new approach is inspired by the use of the Fractional Open Circuit Voltage based Maximum Power Point tracking (MPPT) concept for sub mw Photo Voltaic (PV) cells. The new design adopts two main features: First, it minimizes the power consumed by the power management section; and second, it maximizes the MPPT-converted output voltage and consequently improves the efficiency of the power conversion in the sub mw power level. The new experimentally-tested design showed an improvement of 81% in the efficiency of MPPT conversion using 0.5 mW input power in comparison with the other presented solutions that showed less efficiency with higher input power.

Modeling of WSN Energy Consumption Supplied by iPV Microsystem

“…In [28], the author adopted an a-Si 55mm x40mm Sanyo AM1815/16 module series PV cell and in [29] they used a Schott Solar 1116929 amorphous silicon PV cell placed on an office desk under 200-700 lux and the size of the adopted PV modules is greater than 20cm.…”

Effect of Sensors on the Reliability and Control Performance of Power Circuits in the Web of Things (WoT)

“…The processors and transmitters of such WoT devices can successfully function using the energy that is harvested and processed by the power circuits. Since power circuits and different types of power sources are commonly used in the WoT devices [ 7 , 8 ], their design engineers should not overlook the effect of power circuits (e.g., energy harvesting interfaces) on system performance factors such as reliability [ 9 ], cost [ 10 ], and efficiency [ 11 ]. Examples of power sources for WoT applications that are considered in this paper include batteries [ 2 ] and solar cells [ 1 , 7 ].…”

“…Since power circuits and different types of power sources are commonly used in the WoT devices [ 7 , 8 ], their design engineers should not overlook the effect of power circuits (e.g., energy harvesting interfaces) on system performance factors such as reliability [ 9 ], cost [ 10 ], and efficiency [ 11 ]. Examples of power sources for WoT applications that are considered in this paper include batteries [ 2 ] and solar cells [ 1 , 7 ]. To enable the effective and efficient operation of different power sources, the system designers should consider the reliable circuit control strategies and power management algorithms for power circuits used in WoT devices.…”

RETRACTED: Jafer et al. Design of New Power Management Circuit for Light Energy Harvesting System. Sensors 2016, 16, 270

“…We have recently discovered that the majority of the text and figures in the title paper [1] is copied from a previously published thesis [2]. We consider this a serious breach of publication ethics and the paper will be marked as retracted.…”

“…We have been unable to verify the identity of the third author, Kevin MacNamee, and University College Cork do not have a record of a former student or employee of that name. Contact details that the editorial office was provided for the second and third authors are not valid and they are not considered responsible for the preparation, submission or publication of [1]. …”