List of Articles

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  1 - Solving Security Constrained Unit Commitment by Particle Swarm Optimization
  Shiva Alipour Ghorbani Hossein Nasiraghdam
  The issue of unit commitment is one of the most important economic plans in power system. In modern and traditional power systems, in addition to being economical of the planning, the issue of security in unit operation is also of great importance. Hence power system op More

  The issue of unit commitment is one of the most important economic plans in power system. In modern and traditional power systems, in addition to being economical of the planning, the issue of security in unit operation is also of great importance. Hence power system operation confronts units’ participation and input considering network security constrains. The issue of units’ participation is defined as an optimization problem aimed at determining units' on or off condition and optimized level of units’ production Manuscript profile
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  2 - Design and Analyses of a PWM based Seven Level CascadeCombination Inverter
  Mortaza Sefidi Mehdi Jarahi
  Multilevel Inverters has big placement advantages in Power Electronics and its application can be mentioned to FACTS tools such as UPFC – D-STATCOM. Therefore, nowadays Multilevel Inverters have created vast field’s research and researchers are trying to pre More

  Multilevel Inverters has big placement advantages in Power Electronics and its application can be mentioned to FACTS tools such as UPFC – D-STATCOM. Therefore, nowadays Multilevel Inverters have created vast field’s research and researchers are trying to present appropriate structures with fewer keys and greater advantages. The main advantages of Multilevel Inverters mentioned are low-key voltage stress and low harmonic content of the output voltage. Multilevel Inverters, having many advantages, can be referred to have low volume, low EMI, low losses and high efficiency. In this study, all equations dominating the circuit have been investigated and main and effective parameters have been identified in suggested Invertors and this method has been extended for use in n levels Invertors. Then it has investigated the changes possibility in the Invertors’ structure aiming to reduce dc voltage and to increase the number of output voltage levels. The results of simulations have emphasized the suggested structures. Manuscript profile
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  3 - Mathematical Modeling of Cancer Cells and Chemotherapy Protocol Dealing Optimization Using Fuzzy Differential Equations And Lypunov Stability Criterion
  Hadi Abbasnejad
  Mathematical models can simulate the growth and proliferation of cells in the interaction with healthy cells, the immune system and measure the toxicity of drug and its effects on healthy tissue pay. One of the main goals of modeling the structure and growth of cancer c More

  Mathematical models can simulate the growth and proliferation of cells in the interaction with healthy cells, the immune system and measure the toxicity of drug and its effects on healthy tissue pay. One of the main goals of modeling the structure and growth of cancer cells is to find a control model suitable for administration among patients. In this study, a new mathematical model is designed to describe the changes in different phases of the cycle T cell proliferation, the population of immune cells, the proposed concentration of drug toxicity and treatment using differential equation and fuzzy Lyapunov stability, an optimal treatment protocol. One feature to consider is the rate of clearance of the drug in the body. Manuscript profile
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  4 - Raising Power Quality and Improving Reliability by Distribution Network Reconfiguration in the Presence of Renewable Energy Sources
  Mohamad Taghi Babajani BaghmisheZad Hosein NasirAghdam
  In this paper, reconfiguration problem of distribution network has been investigated toimprove reliability and reduce power loss by placement of renewable energy sources; i.e. solarcell and wind turbine. For this, four reliability indices are considered in objective fun More

  In this paper, reconfiguration problem of distribution network has been investigated toimprove reliability and reduce power loss by placement of renewable energy sources; i.e. solarcell and wind turbine. For this, four reliability indices are considered in objective function;which are as follows: System Average Interruption Frequency Index (SAIFI), System AverageInterruption Duration Index (SAIDI), Cost of Energy Not Supplied (CENS), and MomentaryAverage Interruption Frequency Index (MAIFI). By using a novel technique, the target functionwas normalized. Simulation has been performed on IEEE 69-bus test system. A genetic algorithmcould solve this nonlinear problem. Manuscript profile
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  5 - Novel Circularly Polarized Substrate Integrated Waveguide SLOT Antanna
  Omid Khodadad Pejman Mohammadi
  Circularly-polarized antenna is built based on a new SIW (substrate integrated waveguide)structure which contains cavity-backed resonator and a conventional polarized ring with twosquare slits in inner and outer ring that differ 90° at position and is proposed for r More

  Circularly-polarized antenna is built based on a new SIW (substrate integrated waveguide)structure which contains cavity-backed resonator and a conventional polarized ring with twosquare slits in inner and outer ring that differ 90° at position and is proposed for right-handedcircular polarization (RHCP) and fabricated in two separate layers. A broadband impedancebandwidth of 13.9% and a RHCP axial ratio of 0.5GHz have been obtained under the conditionof less than VSWR ≤2 and axial ratio≤ 3 dB, respectively Manuscript profile
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  6 - Increasing the Efficiency of Photovoltaic Systems by Using Maximum Power Point Tracking (MPPT)
  Alireza Tofigh Rihani Majid Ghandchi
  Using Photovoltaic systems is gradually expanded by increasing energy demand. Abundance and availability of this energy, has turned to one of the most important sources of renewable energy. Unfortunately, photovoltaic systems have two big problems: first, those have ver More

  Using Photovoltaic systems is gradually expanded by increasing energy demand. Abundance and availability of this energy, has turned to one of the most important sources of renewable energy. Unfortunately, photovoltaic systems have two big problems: first, those have very low energy conversion efficiency (in act between 12 and 42 percent under certain circumstances). Second, the power produced by the solar cell depends on nonlinear conditions such as solar radiation, temperature and charge feature. According to this, received power maximum of photovoltaic cells depends on different non-linear variables, it is necessary to be continuously traced, as maximum received power of the cell (by controller). In this research, the increasing efficiency of photovoltaic systems has been investigated by using Maximum Power Point Tracking (MPPT) in two different modes contained connected to the Grid and disconnected from the grid with simulation by MATLAB software. The obtained results showed that the proposed technique is able to improve the current, voltage and power output of photovoltaic cells. Manuscript profile