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This paper describes a model of an autonomous public solar street lighting system powered by photovoltaic panels with energy storage battery and the lighting emission diodes consumer. The MATLAB simulating model was built for the system parameters study (voltages, currents and battery state of charge) under alternating solar intensity, photovoltaic converter efficiency and the system lighting load...
In this paper we proposed multi-stage algorithm of small wind turbine power plant control when it supports maximum extracted power independently on traditional tip speed ratio using the wind speed. We made measurements of wind turbine parameters on urban and prairie territories, showed the necessity of power controlling the turbine, and vindicated the efficiency of control of small wind turbines in...
The need for an emergency braking system for the wind turbine is discussed in this paper. This system should be installed as the addition to a general control system. To solve the problem of emergency braking we propose an electromechanical device. It is equipped with electric and manual drives. The assembly with small outline dimensions transmits a high braking torque value due to the specific kinematic...
The paper presents the approach to solving the task of development of algorithm of interaction between the adaptive digital combined current and voltage transformer and automated control systems of technological processes of digital substation. We provide technical parameters of experimental prototype of the adaptive digital combined current and voltage transformer, a general functional diagram of...
The paper presents the study of advantages and disadvantages of magnetic levitation support for wind turbines. There are many studies on the usage of these devices internationally; and the real wind turbines are being sold. However, we may see not only the advantages but also some negative sides of the so-called “magnetic bearing”. Thus, the question of their possible usage at bigger turbines and...
This paper describes research of influence of gate current and transistor commutation voltage on the switch operation efficiency in IGBT-transistor switch. At research and development of the high-effective energy-saving solutions, we often meet the task of modeling processes related to the electric pulse switch converters. In particular, the task of wind turbine power control cannot be solved today...
Analysis of excitation systems of generators for wind-power units is carried out, a software package for generator simulation is presented, and the sequence of the generator design is presented.
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