Research Title: A Comprehensive Review of Future Photovoltaic Systems

Author: Firas Abdullah Obeidat, Published Year: 2018

Solar Energy,

Faculty: Engineering and Technology

Abstract: This paper presents a comprehensive review of photovoltaic (PV) systems with more focus on PV inverters. At this stage, there is no consensus that this technology will play a major role or will be the first choice for energy generation in the future because of many reasons, the most important of which is its lack of efficiency. Different materials are used and other materials are expected to be used for developing PV cells, modules and power electronic devices in order to increase their efficiency and lifetime, and to reduce their costs. Future power electronic devices are expected to have reduced chip thickness, more specific converter topologies, better control of types of materials, improved nanotechnology, and inbuilt current bi-directionality. Different aspects will be discussed in this paper related to PV inverters including power electronic materials, topologies, grid codes, storage systems, and others.

Keywords: future PV system, PV inverters, PV cells, Power electronic devices, Grid codes

Research Title: PV Micro Inverter Reliability Prediction Based on RIAC

Author: Firas Abdullah Obeidat, Published Year: 2018

Water & Energy International Journal,

Faculty: Engineering and Technology

Abstract: This paper discusses the reliability prediction of a 250 W photovoltaic micro inverter. Using the bill of materials the reliabilities of the main, gate drive, power supply, current and voltage sensing and microprocessor circuits were investigated, and the failure rate calculated. To take the temperature into account, the hourly temperature has been recorded for four years to generate a histogram temperature versus percentage time spent at each temperature. The failure rate of the component was calculated at each inverter operating temperature, and multiplied by the percentage occurrence of this operating temperature to obtain a weighted failure rate. A similar procedure was used to calculate the failure rate of a 240 W photovoltaic micro inverter main circuit to compare the failure rate of the components for the two photovoltaic micro inverter main circuits. All calculations are based on Reliability Information Analysis Center (RIAC) method as one of the most recent reliability methods and show the influence of each inverter component on PV micro inverter reliability.

Keywords: Failure rate, PV micro inverters, Reliability prediction, RIAC

Research Title: ZeroNet Energy Building in Jordan

Author: Nadia Fayez Badarneh, Published Year: 2011

GCREDDER, Amman

Faculty: Engineering and Technology

Abstract: The Energy Need to atypical house in Jordan is analyzed and presented. The energy needs by the house includes electrical load for lighting and appliances and the electricity for cooling and hot water for heating to satisfy comfort conditions for the space>Renewable Energy system PV wind and SWH are selected and Sized to meet the energy requirements for house >Its found that insolation of external walls does not change the cooling load of the buildings, however it reduce 30%of the heating loads .On the other hand insulating the roof of the house significantly reduce the heating and cooling load of 70 % and 20% respectively Furthermore the effect if zoning is investigated and presented. It found splitting the house into two zones based on occupation time will significantly reduce the size of the RES needed to meet the requirements

Keywords: RES,PV,SWH,Wind,Thermal Comfort,Heating and Cooling Loads

Research Title: Wavelet Entropy Algorithm to Allocate the Extreme Power Peaks in WiMax Systems

Author: Qadri Jamal Al-Hamarsheh, Published Year: 2014

International Journal of interactive Mobile Technologies, 8

Faculty: Engineering and Technology

Abstract: This work proposes a solution to overcome the effect for one of the main drawbacks of these days’ wireless systems, where Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) combinations has been used. High peak-to-average power ratio (PAPR) arises after the OFDM stage and reduces the performance of the used nonlinear devices. Therefore, a new stage has been imposed between the MIMO and OFDM block. It is based on the entropy meaning of the wavelet transformation to trigger a proposed thresholding criterion and reconstruct the OFDM signal. As a result, the probability of high PAPR appearance will be limited and reduced; a promising result over our recently published work has been conducted; 15-25% extra reduction. This work could be denoted by MIMO-OFDM based on Entropy Wavelet Transform (MO-EWT) systems. The MO-EWT validity has been checked based on either numerical analysis or conducted simulation based on MATLAB; where 80% improvement of reducing the high PAPR has been achieved over the literature. These results have been reached using the same environment conditions and at additional cost and complexity of the transceivers structure

Keywords: Thresholding, Wavelet Entropy, MIMO, OFDM, PAPR

Research Title: Wavelet Transformation Method to allocate the DVB-T signals peaks

Author: Qadri Jamal Al-Hamarsheh, Published Year: 2017

International Journal of Digital Signals & Smart Systems, 1 no 1

Faculty: Engineering and Technology

Abstract: Terrestrial digital video broadcasting (DVB-T) is considered as one of the main two popular broadcasting standards, which facilitates the transmission of digital television in handheld receivers. In this work, a comparison will be held on the physical layer level in order to enhance the wireless systems’ performance. It is attained by exploiting a recently published work that is based on the wavelets entropy and a new proposition that is based on a special averaging technique. Those two propositions have been used to tackle the peak-to-average power ratio (PAPR) problem that is found in the used orthogonal frequency division multiplexing (OFDM) technique. This comparison asset from BER curves and CCDF curves in order to distinguish between them. A MATLAB simulation has been run in order to validate the numerical achieved results of the proposed work. At the same bandwidth occupancy of the speaker verification-based systems, the proposed technique shows additional enhancement in both of CCDF and BER curves. Moreover, it reduces the previously added complexity to the structure in the receiver side. An extra 25% reduction is achieved in the essence of PAPR and around 35% extra noise immunity.

Keywords: orthogonal frequency division multiplexing; OFDM; wavelet transform; peak-to-average power ratio; PAPR; entropy; clipping; selective mapping; SLM; signal processing.

Research Title: Sniffer Mobile Robot Performance Enhancement-based Averaging-Adaptive Wavelet Transform method

Author: Qadri Jamal Al-Hamarsheh, Published Year: 2017

Jordan Journal of Electrical Engineering (JJEE), 3 no 2

Faculty: Engineering and Technology

Abstract: In order to enhance the Sniffer Mobile Robot (SNFRbot) performance, proposed techniques have been imposed to improve the Multiple-Input Multiple-Output- Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems efficiency. This will be attained by combatting the effect of the peak-to-average power ratio (PAPR) problem. In this work a comparison has been made among different proposed published work; namely, pulse width modulation (PWM)-based, Neural Network-based, and special averaging adaptive wavelet transformation (SAAWT). In addition to a comparison between the published work and the work found in the literature. A MATLAB based simulation has been used to check the SNFRbot by making use of two different criteria; the BER and CCDF curves. This is true under the constraints of keeping the bandwidth and channel behaviors constants. The used data in this simulation has been extracted from a funded project entitled ECEM. This is in addition to a randomly generated data. As a result, the SAAWT work gives the best BER values of about 80%, where the PWM gives the best CCDF results 35%among the proposed work. The enhancement over the previously proposed work falls in the range between 30% and 80%.

Keywords: MIMO-OFDM; Special Averaging Techniques; Neural Network; Linear Codes; Wavelet; Moving Average Filter.

Research Title: PAPR effect remedy in OFDM-based wireless systems

Author: Qadri Jamal Al-Hamarsheh, Published Year: 2017

Journal of Communications Technology and Electronics, 62 no 10

Faculty: Engineering and Technology

Abstract: This work proposes two different criteria in order to enhance the Handheld Digital Video Broadcasting (DVB-T) systems enhancement. Based on the broadcasting standards, DVB-T physical layer uses a powerful technique namely Orthogonal Frequency Division Multiplexing (OFDM) technique. Although it has been used in order to enhance the wireless systems performance by combating the channel’s effect, it has a major drawback that degrades its efficiency; Peak-to-Average Power Ratio (PAPR) problem. Two criteria have been used for this purpose; BER curves and CCDF curves in order to distinguish the powerfulness of those propositions in reducing the PAPR effect. In fact, a powerful special averaging technique results are compared to previously published propositions, namely based on wavelet transformations and the one that is based on the pulse width modulation. A mathematical model has been drawn in order to check both of the CCDF and the BER curves, and simulated at same channel limitations and specifications. The results show an extra 35% noise immunity when using the proposed work over the entropy wavelet proposition, and a 25% PAPR reduction over the previously published work. Furthermore, reducing the reception complexity by decreasing the side information transmission in compared with the work in the literature.

Keywords: OFDM, PAPR, Wavelet Transform, Entropy, Clipping, SLM

Research Title: Orthogonal Wavelet Division Multiplexing- Comparison Study

Author: Qadri Jamal Al-Hamarsheh, Published Year: 2018

IEEE SSD'18, 15th International Multi-Conference on Systems, Signals & Devices,, Tunis

Faculty: Engineering and Technology

Abstract: This work deals with the enhancement of one of the main techniques that is used widely in number of communications systems these days; Orthogonal Frequency Division Multiplex (OFDM). Its powerfulness comes from improving the system's data rates even under harsh channels conditions by making use of the Inverse Fast Fourier Transform (IFFT) idea. However, it suffers from different drawbacks, which make it intrinsically obstinate, such as the Peak-to-Average Power Ratio (PAPR) and synchronization issues. Thus, an analysis of an alternative work will be provided in this work based on the wavelet transforms; wavelet packet transforms-based Daubechies 4 will be analyzed and compared to our previously published work in order to increase the OFDM-based work flexibilities. This comparison will be based on the bit error rates (BER) and exceeding the PAPR values a certain threshold. A MATLAB simulation has been performed in order to verify the reliability of the proposition in order to replace the FFT stage in the OFDM. As a result, the WPT work gives a 1 dB enhancement over the conventional OFDM at 10-3 probability, while the previously Haar based published work enhances this value by 8.8%. in addition to enhances the BER reliability over the proposed RoF channel link.

Keywords: OWDM, fiber, millimeter waves wavelet, packets, Haar.

Research Title: DVB-T Systems Performance Enhancement

Author: Qadri Jamal Al-Hamarsheh, Published Year: 2019

Accepted to be published in the Advances on Systems, Signals and Devices, (Issues on Communication, Signal Processing & Information Technologies), --

Faculty: Engineering and Technology

Abstract: In this work a proposition has been studied in order to check the Terrestrial Digital Video Broadcasting (DVB-T) enhancement. It deals with overcoming the effect of Peak-to-Average Power Ratio (PAPR) drawback on wireless systems? performances. For this purpose, a special averaging technique has been introduced in this work and consists of three different stages; signal?s noise removal, adaptively peak detection, and averaging filtration, consequently. In order to check the work efficiency, a MATLAB simulation has been conducted at the same bandwidth and channel conditions to deals with both of BER curves and CCDF curves. As a result, the proposed work shows promising results over the proposed work in the literature and over our previously published work. The proposed work gives extra immunity against the channel noise reaches up to 25% over the literature. Furthermore, it gives extra 15% reduction in combatting the PAPR effect.

Keywords: OFDM, PAPR, wavelet, averaging filtration, signal processing

Research Title: The role of the Royal Automobile Museum in tourism and heritage education in Jordan

Author: Rabia Hani Amin Haddad, Published Year: 2016

Taylor & Francis/ Automobile Heritage and Tourism, 39

Faculty: Nursing

Abstract: Tourism is thriving in Jordan since the peace treaty was signed with Israel in 1994, whereby tourists have flocked the country in millions (MOTA 2000). The number of tourists has doubled and tripled many times since then especially after Petra, Jordan’s foremost tourist attraction, won the second place of the World New Seven Wonders competition in 2007 (Harahsheh 2009). The latest statistics of the World Tourism Organisation (UNWTO) shows that the number of tourist arrivals to the country was 4.16 million in 2012, increased by 5.1% from 2011 (UNWTO 2013). Most of the tourists come to Jordan from the Middle East (48.2%) followed by Jordanians residing abroad (25.4%), Europe (14.2%), America (4.8%), East Asia/Pacific (4.2%), South Asia (1.9%) and Africa (1.3%). Jordan hosts a lot of natural and man-made attractions that are of great value for tourists to visit. Those include Petra, the new seven wonder of the world, the Dead Sea, the world’s lowest and saltiest natural spa, the Golf of Aqaba with its red corals as well as several Greco-Roman cities (known as the Decapolis) such as Amman (Philadelphia), Jerash (Gerasa) and Um Qais (Gadara) and Crusader castles such as Kerak, Showbak and Ajlun. Jordan hosts also a lot of important world-class museums such as the Royal Automobile Museum, the Children Museum and the Jordan Museum. This chapter in particular examines the Royal Automobile Museum (RAM) in Jordan and the role of that museum in tourism and heritage education as it hosts vintage cars, motorbikes and carting cars owned by the Royal family since 1915. The study focuses on those heritage vehicles as they are employed in the interpretation and presentation of the history of Jordan for almost now 100 years since the Hashemite rule.

Keywords: Jordan, muesums