Modeling and simulation of the dual-power PV-grid energy system utilizing multilevel inverter

2011 ◽  
Author(s):  
I.R. Ibrahim ◽  
Z. Hussain ◽  
A.M. Omar
Keyword(s):  
Modeling And Simulation ◽  
Energy System ◽  
Multilevel Inverter ◽  
Pv Grid ◽  
Dual Power

Power Converter for Dual-Power PV-Grid Energy System Utilizing Cascaded Multilevel Inverter

2014 ◽  
Vol 925 ◽  
pp. 505-509 ◽  
Author(s):  
Intan Rahayu Ibrahim ◽  
Ahmad Maliki Omar ◽  
Zakaria Hussain
Keyword(s):  
Solar Energy ◽  
Electrical Energy ◽  
Energy System ◽  
Power Converter ◽  
Maximum Power ◽  
Multilevel Inverter ◽  
Grid System ◽  
Peak Period ◽  
Pv Grid ◽  
Dual Power

The dual-power PV-grid system was introduced to manipulate the lower tariff rate at off-peak period and to reduce the capital installation cost of PV energy system. The power converter in the PV energy system is used to process solar energy captured by PV modules into usable electrical energy. In the dual-power PV-grid system, the power converter component is consists of a boost regulator to boost and regulate PV outputs to fixed voltage of 240V, 50Hz, a maximum power point tracker (MPPT) to derive maximum power from PV panels and a three operation modes of the battery converter to regulate charging current/discharging current under various PV output and load variation. In this project, a reduced switch and increased level of cascaded H-bridge multilevel inverter was introduced to convert the direct current (DC) output of the solar energy to alternating current (AC) signal to supply an AC load or to be integrated to the grid system. By adapting selective harmonic elimination (SHE) switching strategy, the inverter produces 21 levels of stepped sinusoidal output signal with resultant total harmonics distortion (THD) of 3.90%.

Dual-Power PV-Grid Energy System - An Alternative to the Off-Grid PV Energy System

2014 ◽  
Vol 960-961 ◽  
pp. 1531-1535
Author(s):  
Intan Rahayu Ibrahim ◽  
Ahmad Maliki Omar ◽  
Zakaria Hussain ◽  
Mohd Najib Mohd Hussain ◽  
Siti Zaliha Mohammad Noor
Keyword(s):  
Energy System ◽  
Grid System ◽  
System Configuration ◽  
Peak Period ◽  
Electricity Bill ◽  
Cost Of Energy ◽  
Pv Grid ◽  
Installation Cost ◽  
Electrical Data ◽  
Dual Power

The Dual-power PV-grid energy system was initiated to reduce the capital installation cost of PV energy system and to make use the lower tariff rate offered at off-peak period. In this paper, the system configuration, architecture and operation of the system are described and discussed. The prototype has been developed and runs 24-hours to supply the load. Meteorological and electrical data collected prove the successful of such system. The system is expected to reduce 89% of electricity bill with estimated cost of energy (COE) of USD1.15/kWh. It is suggested that the dual-power PV-grid system is beneficial to serve as an alternative implementation of the off-grid PV energy system.

Dual-Power PV-Grid Energy System – An Alternative to the Off-Grid PV Energy System

2014 ◽  
Vol 925 ◽  
pp. 661-665
Author(s):  
Intan Rahayu Ibrahim ◽  
Ahmad Maliki Omar ◽  
Zakaria Hussain ◽  
Mohd Najib Mohd Hussain ◽  
Siti Zaliha Mohammad Noor
Keyword(s):  
Energy System ◽  
Grid System ◽  
System Configuration ◽  
Peak Period ◽  
Electricity Bill ◽  
Cost Of Energy ◽  
Pv Grid ◽  
Installation Cost ◽  
Electrical Data ◽  
Dual Power

The Dual-power PV-grid energy system was initiated to reduce the capital installation cost of PV energy system and to make use the lower tariff rate offered at off-peak period. In this paper, the system configuration, architecture and operation of the system are described and discussed. The prototype has been developed and runs 24-hours to supply the load. Meteorological and electrical data collected prove the successful of such system. The system is expected to reduce 89% of electricity bill with estimated cost of energy (COE) of USD1.15/kWh. It is suggested that the dual-power PV-grid system is beneficial to serve as an alternative implementation of the off-grid PV energy system.

scholarly journals Temporal load resolution impact on PV/grid system energy flows

2018 ◽  
Vol 240 ◽  
pp. 04003 ◽  
Author(s):  
Marek Jaszczur ◽  
Qusay Hassan ◽  
Janusz Teneta
Keyword(s):  
Temporal Resolution ◽  
System Analysis ◽  
Estimation Error ◽  
Energy System ◽  
Photovoltaic System ◽  
Acquisition Time ◽  
Storage Unit ◽  
Time Step ◽  
Energy Flows ◽  
Pv Grid

In this paper, an investigation of the electrical load temporal resolution on the PV/Grid energy system flows, and self-consumption is done in order to determine the optimum parameters for modelling and simulation. The analysed PV/Grid power systems include a photovoltaic system with the nominal power of Pmax@STC=1.5, 2.5, 3.5 kW without storage unit connected to the grid. The results show that the temporal load resolution may have a high impact on energy flows as well as can be a critical issue for the system analysis accuracy even for the single household. It has been found that the load temporal resolution for energy consumption of 1-min yields reliable results, while data resolutions of 5 and 15 min are still sufficient, however, in that case, the daily electrical energy flows and in consequence energy self-consumption estimation error for selected days may exceed 15%. Acquisition time step longer than 15-minutes may increase error above 20% and from the designer’s point of view should not be used. The high and low temporal resolution experimental data of the electricity consumption (load) for a household are available in digital form on the author’s website http://home.agh.edu.pl/jaszczur.

Towards a Data Calibrated, Simulation-Based Campus Energy Analysis Environment for Situational Awareness and Future Energy System Planning

2014 ◽  
Author(s):  
Scott Duncan ◽  
Michael Balchanos ◽  
Woongje Sung ◽  
Juhyun Kim ◽  
Yongchang Li ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
Visual Analytics ◽  
Distribution Systems ◽  
Situational Awareness ◽  
Energy System ◽  
Integrated Analysis ◽  
Test Bed ◽  
Energy Metering ◽  
Campus Energy ◽  
Analysis Environment

Researchers at Georgia Tech (GT) have recently begun the GT Smart Energy Campus initiative, which combines campus energy metering data with physics-based modeling and simulation to create an integrated analysis environment for campus energy. The environment consists of a digital representation of campus, which supports situational awareness, as well as a virtual test bed for analyzing emerging energy technologies and future scenarios. The first year of the initiative has focused on evaluating campus energy metering data using visual analytics and statistical analysis techniques. Data analysis is presented as having value for two main uses: (1) as attention-directing information to help system operators diagnose anomalies and (2) as a precursor to modeling and simulation (M&S) in future phases of the Smart Energy Campus initiative. The environment is explained using the initial study scoping of the campus thermal energy generation and distribution systems. Furthermore, a modeling and simulation approach leveraging the Modelica M&S language is described, and preliminary results in using it to represent the campus chilled water system are presented.

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