Commercialization of High 600V GaN-on-Silicon Power Devices

2014 ◽  
Vol 778-780 ◽  
pp. 1174-1179 ◽  
Author(s):  
Primit Parikh ◽  
Yi Feng Wu ◽  
Li Kun Shen
Keyword(s):  
Power Systems ◽  
Energy Use ◽  
Lower Cost ◽  
Power Conversion ◽  
Electricity Consumption ◽  
Reducing Power ◽  
Electrical Energy ◽  
Performance Limits ◽  
Power Devices ◽  
Silicon Power Devices

With power conversion losses endemic in all areas of electricity consumption, broadlycategorized into motion control (accounting for around 50% of total electrical energy use), lighting,air conditioning, and information technology, consumers, governments and utilities are finding waysto achieve higher efficiency. Manufacturers of data servers, telecom systems, solar power invertersand drives for motor control are focused on reducing power conversion losses while simultaneouslyshrinking the size of power systems. Although silicon has historically been the base device materialused by the power conversion industry, it is rapidly reaching its physical performance limits. GaNsemiconductors solutions reduce power conversion loss by over 50% in a significantly smaller formfactor and at a lower cost, when device design, fabrication technology and application design areholistically combined to deliver superior end products.

scholarly journals Energy Consumption and Usage Reduction in Lecture Halls, Kwame Nkrumah University of Science and Technology

2021 ◽  
Author(s):  
Pius Nimoh ◽  
Daniel Duah ◽  
Alexander Marful
Keyword(s):  
Energy Consumption ◽  
Best Practices ◽  
Energy Use ◽  
Science And Technology ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
High Increase ◽  
Kwame Nkrumah ◽  
World Energy ◽  
Consumption Practices

All over the world energy is used for different purposes and hence its continuous high demand which has brought about an increase in crisis and prices of energy. Ghana has faced a lot of supply and high electricity consumption challenges over a period of time. The Energy Commission of Ghana has developed regulations and guidelines to help reduce high consumption challenges among users, these included the replacement of incandescent bulbs with fluorescent bulbs, ban of importation of low energy efficient appliances. In spite of the effort to reduce electricity wastage, there is still a high increase in electricity consumption. The research investigated what contributed to electricity consumption in Kwame Nkrumah University of Science and Technology with the lecture halls as the main focus, the research also analyzed the current occupant behavior characterized by the electrical energy consumption practices. And investigated how the contemporary theories for reducing energy consumption was used in the lecture halls. A questionnaire survey was conducted to investigate occupants on their energy use practices in lecture halls that causes wastages, observation was made to establish relevant data on the use of contemporary theories for energy reduction in lecture halls. In a total of 110 occupants that responded to the questionnaire, 79 occupants almost always turn off electrical fitting and fixtures when not in use. From the responses, a majority of the occupants claimed to comply to best practices of energy use. The research concluded that some contemporary theories to reduce energy consumptions was not used and considered in the lecture halls.

scholarly journals Exergy Analysis of Ship Power Systems

2018 ◽  
Author(s):  
G G Parker ◽  
E H Trinklein ◽  
R D Robinett III ◽  
T J McCoy
Keyword(s):  
Energy Storage ◽  
Power Systems ◽  
Electricity Consumption ◽  
Second Law Of Thermodynamics ◽  
Electrical Energy ◽  
Optimization Techniques ◽  
Exergy Destruction ◽  
Pulse Forming Network ◽  
Energy Flows ◽  
Operation Cycle

Ship subsystems and mission modules perform energy conversion during their operation resulting in a combination of electricity consumption, heat generation and mechanical work. These multi-physics subsystems often have opportunities for performing an energy storage role during their operation cycle. The kinetic energy stored in the rotating mass of a generator set or the electrical energy stored in a railgun pulse forming network are but two examples of energy storage aboard warships. Treating each subsystem as a disconnected entity reduces the potential for exploiting their inherent interactions and results in over-designed shipboard systems with excessive weight and volume. Exergy - the amount of energy available for performing useful work - provides a path for exploiting multi-physics energy flows. Utilizing the Second Law of Thermodynamics, by modeling and minimizing exergy destruction, a recent study, showed that exergy control increased the overall efficiency by 18% over traditional optimization techniques when applied to a terrestrial HVAC application. In this paper a notional, multi-physics ship power system is developed that explicitly captures the exergy flows. Particular attention is given to exergy destruction phenomena. Simulation of the system illustrates operational characteristics with greatest impact on exergy destruction highlighting areas for applying optimal, exergy-based control schemes. This approach will allow ship designers to minimize the size and weight of installed power generation, energy storage and thermal management systems, enabling the affordable implementation of advanced weapons and sensors. 

scholarly journals Analisis Tren Konsumsi Energi Listrik pada Penyulang Singkarak

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Erliza Yuniarti ◽  
Dian Tara ◽  
Andika Pratama ◽  
Deni Rahmadi Putra
Keyword(s):  
Distribution System ◽  
Energy Use ◽  
Peak Load ◽  
Electricity Consumption ◽  
Secondary Data ◽  
Electrical Energy ◽  
Load Factor ◽  
Small Range ◽  
Small Load ◽  
Generation Capacity

Electrical energy use is an interesting topic because it is related to the operational planning of the distribution system, maintenance of medium voltage networks, and prediction of electricity consumption, especially in  the short term. Trends are created based on historical data represented in the load  curves. This research aims to determine the characteristics of the load by making load groups according to   the type of day and calculate  the load factor based on secondary data from PT. PLN (Persero) Borang substation. The research uses comparative techniques in the load groups and calculates the load factor which is the benchmark for generation  capacity. The results of the study  showed that the load trendon Singkarak feeders in  overall is the same on weekdays as on weekends, namely that  minimum load occurs in the morning at 07.00, the load starts to increase but is not significant in relation to  the activities of the population after 08.00-16.00. The load trend increases significantly from 16.00 to the peak load that occurs at 19.00-21.00 and after that, the load goes down  to the minimum load. The trend  for higher than average peak loads on Mondays is more common and weekend loads on Saturdays and Sundays only relatively small  load fluctuationsoccur.. The load group for religious holidays and national holidays received good load factor scores, with a relatively small range of loads throughout the day.

scholarly journals ANALISIS KONSUMSI ENERGI LISTRIK UNTUK PENCAPAIAN EFISIENSI ENERGI DI KANTOR DEWAN PERWAKILAN RAKYAT DAERAH KABUPATEN TOJO UNA-UNA

Foristek ◽  
2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Duldes S. Lambey ◽  
Nurhani Amin ◽  
Yulius S. Pirade ◽  
Rudi Santoso
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
House Of Representatives ◽  
Air Conditioning ◽  
Energy Use ◽  
Electricity Consumption ◽  
Mineral Resources ◽  
Electrical Energy ◽  
The Republic ◽  
Consumption Intensity

Audit of Electrical Energy at the Regional House of Representatives of the Tojo Una-Una District is a comprehensive method in examining energy use in a building to find the value of Energy Consumption Intensity (IKE) and Energy Saving Opportunities (PHE) that can be obtained to reduce energy waste so that the consumption of electrical energy is more effective and efficient. The audit of Electrical Energy is carried out according to SNI 03-6196-2000 concerning Energy audit procedures in buildings and the Regulation of the Minister of Energy and Mineral Resources of the Republic of Indonesia Number 13 of 2012 concerning Savings Electricity Consumption. The results of the evaluation of the Energy Consumption Intensity Calculation conducted at the Office of the Regional House of Representatives of Tojo Una-Una District known that there are 16 rooms with the criteria for the Energy Consumption Intensity (IKE) value, namely an office building with air conditioning has efficient enough 8 rooms, wasteful 3 rooms and based on office buildings without Air-conditioning is quite efficient in 3 rooms and wasteful in 2 rooms. The results of Energy Saving Opportunities (PHE) that have been identified by using air conditioning and energy-saving lamps, reducing hours of use without reducing the quality of service in the office can save electricity consumption of 2.339,5165 kWh/month or save electricity bill payments of IDR. 3.379.899,60/month.

scholarly journals Perancangan Sistem Pengendali Jarak Jauh Berbasis Mikrokontroler Pada Rumah Cerdas

2021 ◽  
Vol 18 (2) ◽  
pp. 251
Author(s):  
Lewi Lewi ◽  
Abdul Rahman
Keyword(s):  
Energy Use ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Short Message ◽  
Control Center ◽  
Home Owner ◽  
Turn On ◽  
Increasing Demand ◽  
Save Energy ◽  
And Control

In the construction of a house, the model or design is often the main priority, while the electrical installation is not given much attention. As a result, the need for electrical energy is increasing rapidly. In addition, the increasing demand for electrical energy is also due to a lack of supervision and control over household electricity consumption. A simple solution to save energy while facilitating monitoring of electrical energy use is a system that integrated with various devices in the house. This system is also necessary because it can be controlled by the owner of the house remotely, namely by short message (SMS). This control system is controlled by an Arduino microcontroller as a control center connected to a device to turn on the lights. The microcontroller is connected to the GSM Shield which functions as a device that receives messages as short as those sent by the home owner. The contents of the message received by the GSM Shield will be read by the microcontroller and if the contents of the message are correct, the microcontroller can give instructions to the device to turn on the light.

scholarly journals Calculation of Consumption and Expenditures for Electricity Energy Costs at Lido Graha Hotel Lhokseumawe City Based on Electrical Power Measurement

2020 ◽  
Vol 1 (2) ◽  
pp. 73-79
Author(s):  
Arnawan Hasibuan ◽  
Widyana Verawaty Siregar ◽  
Elvy Sahnur Nasution ◽  
Rohana Ismail
Keyword(s):  
Energy Use ◽  
Electrical Power ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Energy Utilization ◽  
Power Measurement ◽  
Energy Audit ◽  
Air Conditioners ◽  
Analysis Technique ◽  
Direct Measurements

Evaluation of energy utilization and identification become energy saving opportunities, as well as recommendations for increasing efficiency, on energy use and use of energy sources in the context of energy conservation This paper aims to describe the audit of electrical energy in the Lido Graha Lhokseumawe Hotel room, by taking samples in different room types and conducting an electrical energy audit on the use of installed lights and air conditioners. The method used in this study is data collection, interviews, observations and direct measurements on the use of lights and AC (Air Conditioning). The data analysis technique used is to determine the estimated value of electricity consumption and how much it will cost for electricity. From the results of calculations and analysis obtained total electricity consumption needs based on the type of room with various types of loads used 855.62 kWh/days with costs that must be spent per day is Rp. 1,190,574.96, 25,668.6 kWh/month with a monthly cost of Rp. 35,087,608.60. Whereas for a year electricity demand is 308,494.8 kWh/year with a cost of Rp. 421,051,305.24.

Electricity consumption and economic growth in ASEAN

2017 ◽  
Vol 5 (2) ◽  
pp. 16
Author(s):  
Ahmad Ghazali Ismail ◽  
Arlinah Abd Rashid ◽  
Azlina Hanif
Keyword(s):  
Economic Growth ◽  
Energy Use ◽  
Electricity Consumption ◽  
Panel Estimation ◽  
Real Gdp ◽  
Long Run ◽  
Bidirectional Relationship ◽  
Short Run ◽  
Using Data ◽  
The Relationship

The relationship and causality direction between electricity consumption and economic growth is an important issue in the fields of energy economics and policies towards energy use. Extensive literatures has discussed the issue, but the array of findings provides anything but consensus on either the existence of relations or direction of causality between the variables. This study extends research in this area by studying the long-run and causal relations between economic growth, electricity consumption, labour and capital based on the neo-classical one sector aggregate production technology mode using data of electricity consumption and real GDP for ASEAN from the year 1983 to 2012. The analysis is conducted using advanced panel estimation approaches and found no causality in the short run while in the long-run, the results indicate that there are bidirectional relationship among variables. This study provides supplementary evidences of relationship between electricity consumption and economic growth in ASEAN.

Study of the operation of an artificial neural network that works in the electric network in order to prevent emergency conditions.

2020 ◽  
Vol 14 (1) ◽  
pp. 48-54
Author(s):  
D. Ostrenko ◽  
Keyword(s):  
Neural Networks ◽  
Learning Algorithm ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Energy System ◽  
Electrical Networks ◽  
Electric Networks ◽  
Electric Network ◽  
Time Dynamics ◽  
Emergency Situations

Emergency modes in electrical networks, arising for various reasons, lead to a break in the transmission of electrical energy on the way from the generating facility to the consumer. In most cases, such time breaks are unacceptable (the degree depends on the class of the consumer). Therefore, an effective solution is to both deal with the consequences, use emergency input of the reserve, and prevent these emergency situations by predicting events in the electric network. After analyzing the source [1], it was concluded that there are several methods for performing the forecast of emergency situations in electric networks. It can be: technical analysis, operational data processing (or online analytical processing), nonlinear regression methods. However, it is neural networks that have received the greatest application for solving these tasks. In this paper, we analyze existing neural networks used to predict processes in electrical systems, analyze the learning algorithm, and propose a new method for using neural networks to predict in electrical networks. Prognostication in electrical engineering plays a key role in shaping the balance of electricity in the grid, influencing the choice of mode parameters and estimated electrical loads. The balance of generation of electricity is the basis of technological stability of the energy system, its violation affects the quality of electricity (there are frequency and voltage jumps in the network), which reduces the efficiency of the equipment. Also, the correct forecast allows to ensure the optimal load distribution between the objects of the grid. According to the experience of [2], different methods are usually used for forecasting electricity consumption and building customer profiles, usually based on the analysis of the time dynamics of electricity consumption and its factors, the identification of statistical relationships between features and the construction of models.

Ground Transportation: Road and Rail

2017 ◽  
Author(s):  
Peter Rez
Keyword(s):  
Internal Combustion Engines ◽  
Energy Use ◽  
Rolling Resistance ◽  
Electrical Energy ◽  
Combustion Engines ◽  
Peak Efficiency ◽  
Railroad Tracks ◽  
Air Resistance ◽  
Thin Structure ◽  
Main Disadvantage

Everything that rolls along the ground uses energy to overcome both rolling resistance and air resistance. Air resistance is more significant at higher speeds. Repeated accelerations dominate energy use in stop–start city driving. Not surprisingly, heavy, large SUVs use more energy to go a given distance than lighter, more streamlined cars. Due to the mismatch between the torque required and the rotation rate of the drive wheels, internal combustion engines in cars or trucks do not operate at their peak efficiency. Trains are the most efficient form of ground transportation due to both the lower rolling resistance of steel wheels on railroad tracks and the lower air resistance of its long and thin structure. A further advantage is that rail with fixed tracks can take advantage of the efficient generation of electrical energy. This is also obviously the main disadvantage; trains can only go where tracks have been laid.

scholarly journals Critical Determinants of Household Electricity Consumption in a Rapidly Growing City

2021 ◽  
Vol 13 (8) ◽  
pp. 4441
Author(s):  
Sharif Shofirun Sharif Ali ◽  
Muhammad Rizal Razman ◽  
Azahan Awang ◽  
M. R. M. Asyraf ◽  
M. R. Ishak ◽  
...  
Keyword(s):  
Energy Use ◽  
Urban Expansion ◽  
Electricity Consumption ◽  
Critical Factor ◽  
Urban Ecosystem ◽  
Low Carbon ◽  
Monthly Income ◽  
Increase Energy Efficiency ◽  
Resource Sustainability ◽  
Technology Improvement

Despite growing urban electricity consumption, information on actual energy use in the household sector is still limited and causal factors leading to electricity consumption remain speculative due to urban expansion and its growing complexity, particularly in developing countries such as Malaysia. This study aims to examine the critical determinants of household electricity consumption by evaluating the patterns and flows of consumption and analysing relationships and their effects on electricity usage among 620 urban households in Seremban, Malaysia. Results suggest that the average urban household electricity consumption is 648.31 kWh/month; this value continues to grow with the increase in the household monthly income (r = 0.360; p < 0.01) and number of rooms (r = 0.360; p < 0.01) as quality of life improves. A large portion of electricity is allocated for kitchen/home consumption, followed by cooling and lighting. Multiple linear regressions revealed that married households with a high monthly income and living in spacious houses together with three to five people are important predictors of electricity consumption in Seremban. This study empirically identified that the number of rooms is the most critical factor of electricity consumption and strategies to increase energy efficiency, maintain resource sustainability and minimise greenhouse gas threat on the urban ecosystem are vital. Therefore, promoting low carbon initiatives for energy conservation and technology improvement and implementing policies in the domestic sector are essential to achieve the greatest potential energy consumption reduction in urban regions.

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