Mitra Mirhosseini

• PhD in Electrical Engineering
• UNSW Sydney

Power outage is one of the significant problems for electricity distribution companies. Power outages cause customer dissatisfaction and reduce distribution companies' profits and revenues. Therefore, the electricity distribution companies are trying to moderate the leading causes of the outage. However, the dynamics of environmental conditions cre...

Developing the power plants in any country is considered an economic development strategy as it changes the country’s market despite the competitive pressures. However, to grow the electricity market, policymakers need to evaluate the domestic Strengths, Weaknesses, Opportunities, and Threats (SWOT) of electric power plants. So, the necessity of a...

This paper discusses the control of large-scale grid-connected photovoltaic power plants (GCPPPs) operating under unbalanced grid voltage sags. The positive and negative sequences of the output currents are controlled to achieve different targets: injecting constant power (i) to the grid, or (ii) to the ac side of the converter, i.e., including the...

Photovoltaic power plants are obliged to maintain power quality standards when interconnected to the grid based on the grid codes (GCs). Variations in grid frequency can be one of the main sources of harmonic distortions in a generated currents of a grid-connected photovoltaic power plant (GCPPP) as long as it is incorporated with frequency-dependa...

This paper discusses the control of large-scale grid-connected photovoltaic power plant (GCPPP) operating under unbalanced grid voltages. The positive and negative sequences of the grid currents need to be controlled to regulate the power injected into the grid during unbalanced grid voltages. This paper shows that the use of conventional proportio...

Independent current control of each phase of a three-phase voltage source inverter under unbalanced voltage sags is proposed to effectively meet grid code requirements for grid-connected photovoltaic power plants (GCPPPs). Under current grid codes, GCPPPs should support grid voltages by injecting reactive currents during voltage sags. Such injectio...

Grid-connected distributed generation sources interfaced with voltage source inverters (VSIs) need to be disconnected from the grid under: 1)excessive dc-link voltage; 2)excessive ac currents; and 3)loss of grid-voltage synchronization. In this paper, the control of single- and two-stage grid-connected VSIs in photovoltaic (PV) power plants is deve...

This letter proposes a phase-locked loop (PLL) able to operate as an independent single-phase PLL in the context of three-phase systems. Its key advantage is that the extracted information allows the independent control of both the active and reactive powers for each phase. The proposed PLL utilizes moving average filters and, hence, remains robust...

In grid-connected photovoltaic (PV) power stations, improving the life expectancy and long-term reliability of three-phase PV inverters is urgently needed to match the significantly higher lifetime of the PV modules. A key contribution towards such improvement is replacing the conventional electrolytic film capacitors inside the inverter with metal...

In this paper the control of a single-stage grid-connected photovoltaic power plant (GCPPP) is developed to address the issue of inverter disconnection under various grid faults. There are three main reasons for inverter disconnection which are (i) excessive dc-link voltage, (ii) excessive ac currents and (iii) loss of grid-voltage synchronization....

This paper discusses the control of the positive- and negative-sequence components of a large-scale grid-connected photovoltaic system (GCPS) under unbalanced voltage sag conditions in the grid. Some issues regarding stability and dynamic performance of the system occur when applying PI controllers in the current control loops. The reason is the de...

This paper discusses the performance of a large-scale grid-connected photovoltaic system (GCPS) under unbalanced voltage sag conditions in the grid. By applying the droop control to address the low-voltage-ride-through (LVRT) capability, the output currents are no longer sinusoidal due to the oscillations produced in the current references. To deal...

The interconnection of photovoltaic (PV) systems with electricity grid continues to increase significantly worldwide. These systems benefit firstly the grid by improving the reliability of the supply and secondly the owners through revenue earning. However, PV systems without energy storage are intermittent power sources. As a result they bring abo...

The paper discusses the performance of a 10 MVA grid-connected photovoltaic system (GCPS) under various grid faults. The faults include the typical three-phase symmetrical fault (3LG), the single-phase to-ground fault (LG), two-phases-to-ground fault (2LG) and the phase-to-phase fault (2L). The system is studied with and without reactive power supp...

Modelling of large-scale grid-connected photovoltaic systems (GCPSs) is needed for different time frameworks to assess different aspects of both component and system performance. The paper presents extended models of large-scale GCPSs with DigSILENT PowerFactory for static grid support using reactive power control. Grid codes are taken into account...

Transmission expansion planning (TEP) is now a significant power system optimization problem. The TEP problem is a complex and nonlinear combinatorial problem of mixed integer nature where the number of candidate solutions to be evaluated increases exponentially with system size. In this paper a heuristic approach for Transmission Expansion Plannin...

A fuzzy logic controller (FLC) formation with an efficient understanding and a small rule base that can be simply implemented in existing industrial controllers was proposed. It was depicted in both software simulation and hardware test in an industrial setting that the fuzzy logic control is much more capable than the current temperature controlle...