M. Tariq Iqbal

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Wind is one of the cheapest and cleanest sources of energy. However, large and frequent fluctuations in wind intensity and directions can cause serious problems in harvesting this energy. Wind turbines are subjected to many unexpected environmental loads, which can be catastrophic in nature for the wind turbine system. Like any other industrial equipment(More)
This paper presents a comprehensive conversion loss analysis of the Power Conditioning System (PCS) for a grid connected Permanent Magnet Generator (PMG) and a Wound Rotor Induction Generator (WRIG) based small wind turbine system. The main focus of the loss analysis is the conduction and switching losses in the semiconductor devices and PCS. The analysis(More)
This work presents a reliability analysis of the Power Conditioning System (PCS) for both the Permanent Magnet Generator (PMG) and Wound Rotor Induction Generator (WRIG)-based small wind turbine generation systems. The PCS for grid connection of the PMG-based system requires a rectifier, boost converter and a grid-tie inverter, while the WRIG-based system(More)
This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Abstract—This paper presents an embedded frequency response analyzer (EFRA) for Fuel Cells (FC) based on a robust measurement technique with simple implementation. Frequency response analysis(More)
Fuel cells (FC) are power sources that convert electrochemical energy into electrical energy in a clean and efficient manner. FC technology presents one of the most promising solutions to reduce fossil fuel consumption. FC simulators are expected to play a key role in the development of FC systems due to their low cost and flexibility. This paper presents(More)
Microwave repeaters are one of the main energy consumers in the telecommunication industry. These repeaters are powered using diesel generators and batteries, particularly when they are located in remote areas. Diesel generators require higher maintenance cost and for remote sites this cost will be more due to the added oil transportation cost. The aim of(More)
This paper investigates the most feasible configuration of a hybrid energy system for a typical electric-heated home in St. John's, Newfoundland. Available renewable energy resources data i.e. hourly wind speed, solar insolation and flow rate in Waterford River and electric power consumption data of an electric-heated house is used for sizing the hybrid(More)
Generation of electricity using diesel is costly for a small remote isolated system. At a remote location electricity generation from renewable energy such as wind can help to reduce the overall operating costs by reducing the fuel costs. Siting of wind turbines connected to the diesel in a remote location effects wind penetration and power quality. In this(More)
An isolated small wind turbine emulator is described in this paper. The system consists of a PC controlled variable speed DC motor coupled to a synchronous generator. Dump load is connected to the generator through a microcontroller controlled DC-DC converter. The varying aerodynamic torque of the wind turbine due to furling action and its resulting(More)
An isolated small wind turbine emulator based on a separately excited DC motor is developed to emulate and evaluate the performance of a small wind turbine using different control strategies. The test rig consists of a 3HP separately excited DC motor coupled to a synchronous generator. A dump load is connected to the generator through a buck-boost converter(More)