A method for generating electricity using high wind pressure generated by fast moving vehicles channeling the induced wind in the direction of the wind turbine; converting the energy of the wind into mechanical energy by using wind turbine; and converting the mechanical energy into electrical energy by using a generating device and can be used for applications.
A modular converter for permanent magnet wind generator system is presented. Multilevel converters have many advantages such as the capacity to generate a very good quality of waveforms, the reduced switching frequency, the low energy loss and the low effort on power devices. The converter modules are cascaded to get medium voltage output 6 KV, thus eliminating the grid-side step up transformer, which is enviable for both onshore and offshore wind turbines. Each and every converter module is composed of a rectifier, dc-link and an inverter. Here the generator coils are 90 degree phase shifted which are then rectified through the power factor correction (PFC) circuit and linked in series to get unity power factor, stable dc-link power and higher dc-link voltage. The generator armature inductance is used as the AC-side PFC boost inductor, thus dipping the system size and cost. The inverter adopts a neutral point clamped (NPC) converter to match the dc-link voltage level and are cascaded to get multilevel medium voltage output. The vector control scheme is used to correct the converter active and reactive power transferred to the grid. Simulation results with a 1.5MW wind generator and converter system confirm the proposed topology and control method.
This paper proposes adaptive Maximum Power Point Tracking (MPPT) controller for Permanent Magnet Synchronous Generator (PMSG) wind turbine and direct power control for grid side inverter for transformer less integration of wind energy. PMSG wind turbine with two back to back voltage source converters are considered more efficient, used to make real and reactive power control. The optimal control strategy has introduced for integrated control of PMSG Maximum Power Extraction, DC link voltage control and grid voltage support controls. Simulation model using MATLAB Simulink has developed to investigate the performance of proposed control techniques for PMSG wind turbine steady and variable wind conditions. This paper shows that the direct driven grid connected PMSG system has excellent performances and confirms the feasibility of the proposed techniques. While the wind turbine market continues to be dominated by conventional gear-driven wind turbine systems, the direct drive is attracting attention. PM machines are more attractive and superior with higher efficiency and energy yield, higher reliability, and power-to-weight ratio compared with electricity-excited machines.
This paper presents the performance analysis of five levels and seven levels multi-string inverter using different PWM method. The proposed system components are modeled and simulated through computer software tool using MATLAB/SIMULINK. This work also describes the development of design, modeling and simulation of seven level multi-string inverters topology for industrial drive systems. The multi-string inverter based system gives better voltage regulation and efficiency compared to multi-level inverters. The output voltage of the drive system can be controlled and the THD reduced by using space vector modulation method. The advanced switching technique can be implemented for reducing the THD. A filter is also used in the output side to further reduce the harmonic values.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.