STATISTICAL OPTIMIZATION OF FREQUENCY REGULATED INDUCTION ELECTRIC DRIVES WITH SCALAR CONTROL
Journal Title: Електротехніка і Електромеханіка - Year 2017, Vol 0, Issue 1
Abstract
Purpose. Working out of technique of synthesizing statistically optimal controllers of induction electric drives with frequency scalar control operating under stochastic loads. Methodology. It is shown, that one of the ways of increasing the energy efficiency of induction electric drives at random changes of loads is to create closed systems of electric drives with statistically optimal regulators that would take into account the stochastic nature of the disturbances and acted as filters of occasional high frequency fluctuations. The structure of such controls depends on the statistical characteristics of stochastic loads – correlation function and spectral density. In this mode, the minimum loss in dynamic mode with random intensive changed loads is provided by criterion of minimum mean square error of optimal parameter control. In the case of frequency controlled electric drive such a parameter is the optimum rotor flux. Results. The optimal structures of regulators of electric drives under stochastic loads according to type of random disturbances are identified. Originality. The technique of statistically optimal synthesis with feature of the expansion of a random process load on average, served as a useful signal, and high-frequency fluctuations around the average value, served as barrier, is developed. Practical value. On an example of simulation of work of the electric drive of a crusher of grain it is shown efficiency of a filtration by statically optimal regulator of the high-frequency components of random torques of load, reduction of dispersions of its outlet parameters, increase of cyclic indicators of energy efficiency of the electric drive, such as cyclic efficiency and power factor.
Authors and Affiliations
Yu. V. Shurub
Keywords
Related Articles
- EP ID EP291693
- DOI 10.20998/2074-272X.2017.1.05
- Views 114
- Downloads 0
A COMPUTER PROGRAM FOR INTERPRETATION OF THE DATA OF VERTICAL ELECTRICAL SOUNDING VEZ-4A
Purpose. Creating a computer program for interpreting the results of vertical sounding the soil in the form of multilayer model most typical for Ukraine. Methodology. The algorithm of the program is constructed on determ...
AN OPTIMIZATION APPROACH TO THE CHOICE OF PARAMETERS OF LINEAR PULSE INDUCTION ELECTROMECHANICAL CONVERTER
Purpose. The purpose of the paper is to select the main parameters of the linear pulse induction electromechanical converters (LPIEC) for high-speed and power use with the use of the optimization approach, which provides...
POWER DESCRIPTIONS OF A STORM CLOUD OF TROPOSPHERE OF EARTH: FEATURES OF THEIR CALCULATION AND APPLIED UTILIZATION
Purpose. Implementation of calculation estimation of such basic power descriptions of the system is a «storm cloud - earth», as total charge of qΣ, electric potential of φr, electric energy of W0 and amplitude-temporal p...
MAGNETIC-PULSE CAR BODY PANELS FLATTENING. THEORETICAL ASPECTS AND PRACTICAL RESULTS
The aim of the article is to provide theoretical and experimental studying of the «induction system with an attractive screen» prac-tical effectiveness with the excited magnetic pulse attractive forces numerical estimati...
MONITORING OF ELECTRICAL ENERGY QUALITY ON THE TRACTION SUBSTATION INPUT
For the implementation of measures to maintain the quality of the energy industrial enterprises have to spend a significant material and monetary assets. In this regard, significant is the feasibility study of the alloca...