Maximum power extraction from a small wind turbine emulator using a DC-DC converter controlled by a microcontroller
Applications of renewable energy systems have a great potential to generate electricity for remote and isolated locations. However, before deploying any Wind Turbine (WT) system, it is necessary to evaluate its steady state and dynamic behavior and investigate the design of the power electronics and controller performances. In this research, an operational 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 controlled by a microcontroller. Wind turbine rotor and furling dynamics are incorporated in the emulator with the use of a PC based wind turbine model. Emulation of the wind turbine is confirmed by running the DC motor to track the theoretical rotational speed of the wind turbine rotor. A dynamic maximum power controller is implemented and tested. Test results indicate that the proposed system accurately emulates the behaviour of a small wind turbine system. There are several isolated areas are all over the Newfoundland and Labrador and wind power can be used to meet the local load demand. Such a test-rig can help the manufacturer as well installer to evaluate their system performances before deploying their wind turbine and associated controller power electronics.
30 Nov -0001
Computer and electronic product manufacturing
Electrical and Computer Engineering
Strategic Research Theme
Environment, Energy and Natural Resources