Purpose: In the first part of the article gives analysis of the impact of various types of the regulators (PI controller, relay and relay operating in sliding mode) on the quality of the transition process in the current loop. It is shown that the best performance in speed and overshoot has a relay regulator operating in sliding mode. In the second part of the article describes a three-loop control system of an electromagnetic bearing gas blower with the capacity of 16 MW The methodology of the work : to calculate the regulator used the method of transfer functions. A switch regulator operating in the sliding mode is used as a current regulator, and to determine the parameters of the speed controller and of the position controller, adjustment onto the modular optimum is performed. The analysis of the transition processes in the three-loop control system is performed in «MatlabSimulink» software. Results: in the result of modelling the electromagnetic bearing control system, transient phenomena by controlling and perturbation actions are obtained. The results are used in the construction of the control system electromagnetic bearing blower pumping unit at the compressor station «Pomarskaya»
Keywords: electromagnetic bearing, three-loop control system, the current loop, relay regulator, modular optimum.
The article describes the features of the design of control systems based on renewable and alternative energy sources. These are managed by a fuzzy logic element specially formed the basis of the rules. A new approach to improve the energy efficiency of autonomous systems by changing the management structure.
Keywords: Renewable energy sources, design, evaluation, planning, energy efficiency, monitoring, forecasting, development prospects
In article the main aspects of design of small power supply systems on the basis of renewables, questions of their introduction in the existing power supply system of the country and feature of this process are considered. The main actions for increase of efficiency and optimization of structure of renewables are considered.
Keywords: renewables, design, assessment, planning, energy efficiency, monitoring, forecasting, development prospects
A long term study of compensation converters allowed to solve the task of designing the structure, the calculation of its elements, the determination of static characteristics and energy performance. Thus remain undeveloped algorithms of their work to ensure a successful use of compensatory converters and independent control of active and reactive power consumption. An algorithm of their work to ensure the optimal use of compensatory converters. This article contains material from GC № 16.526.12.6016 11.10.2011.
Keywords: Site load electric network compensation converters; management algorithms ; controlled electric drive with compensation rectifier in section of the direct current of the converter of the frequency
An optimal control algorithm for compensating converters. This algorithm provides control of active and reactive components of power consumption. The algorithm allows to reach a balance between the values of the angles controls αi and αe . In the algorithm used is a method for solving equations by iteration. In article materials of the state contract № 16.526.12.6016 on 11.10.2011.
Keywords: compensation converter, frequency converter, control algorithm, objective function, iterative method
Discusses the features of mates renewable эергии (RES), and also technological platforms, as well as measures to support industry. Shows the results of modeling of wind power systems and the conclusions about the dependence of the output parameters of stochastically varying input parameters
Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production
The processes happening in system of power supply of the AVO electric drive of gas are considered. The analysis is carried out and the assessment of consumption of electric energy of AVO of gas is executed.
Keywords: compressor station, device of air cooling of gas, mathematical statistics