IDENTIFICATION OF NONLINEAR PARAMETERS OF ROTOR’S IN THE EQUIVALENT CIRCUIT OF INDUCTION MOTOR WITH USE OF ENERGY STORAGES
Journal Title: Електромеханічні і енергозберігаючі системи - Year 2017, Vol 1, Issue 37
Abstract
Purpose. Substantiation of the possibility of identification of nonlinear parameters of the equivalent circuit of induction motor using energy storage devices. Methodology. The article proposes an approach to determining motor’s parameters taking into account the effect of current displacement in the rotor in the form of the dependence of the rotor's resistance on the current. To determine the parameters of induction motors, it is proposed to use the energy method, in accordance with which a system of identification equations of the balance of instantaneous power components is compiled. The system of identification equations is formed in accordance with the adopted equivalent circuit, which takes into account the dependence of the rotor's resistance on the rotor’s current. Results. It is shown that the proposed approach allows identifying electromagnetic parameters of induction motor with sufficient accuracy, taking into account the effect of current displacement in the rotor. The researches carried out by the authors of the efficiency of the energy method in the identification of EMP of IM showed that with the help of this method it is possible to determine resistance of the rotor at an angular velocity equal to zero. An increase in the stator current under these conditions leads to an increase in the rotor current, and, accordingly, to increase in the rotor’s resistance. Studies installed expediency identification of EMP of IM with taking into account effect of current displacement when supplying by decaying signal of DC voltage on the stator winding and followed harmonic analysis of the current and voltage, determining an actual value of the rotor’s resistance. Originality. The article suggests a variant of obtaining the necessary harmonic composition of the voltage and current signals when the induction motor is powered by energy storage devices. Practical value. Increase time between failures of repaired engines and improve their energy characteristics when operating in accordance with new passport data and permissible load values.
Authors and Affiliations
Dmytro Yosypovych Rodkin, Iurii Romashykhin, Myikita Rudenko
Keywords
Related Articles
- EP ID EP660444
- DOI -
- Views 131
- Downloads 0
MATHEMATICAL MODEL AND CONTROL ALGORITHM OF AN UNREGULATED WIND TURBINE AND IEIG-BASED ISOLATED ENERGY SYSTEM
Purpose. To develop the mathematical model and control algorithm of a stand-alone unregulated wind turbine energy system with inverter excited induction generator, dc main load and auxiliary switched dump load. Methodolo...
ANALYTICAL CALCULATION AND OPTIMIZATION OF THE BASIC ELECTROMAGNETIC LOSSES OF THE ENERGY OF THE FREQUENCY-REGULATED ASYNCHRONOUS ENGINE IN THE START-BRAKING REGIMES
Purpose. The purpose of the proposed article is to obtain analytical dependencies for calculation and optimization of the main electromagnetic energy losses and acceleration and deceleration times of frequency-controlled...
MEASURING INDICATORS OF ENERGY PROCESSES IN THE ASYNCHRONOUS GENERATOR ON THE BASIS OF THE VIRTUAL MODEL IN THE LABVIEW SOFTWARE
Purpose. To investigate the process of power generation in the autonomous sources of energy based on an asynchronous generator with capacitive excitation and creating easy to use and clearly virtual device performance po...
DESIGN AND REALIZATION OF COMPUTER BASED OSCILLOSCOPE USING DSP
Purpose. The design and implementation of a financially affordable computer-based oscilloscope using digital signal controller. Such survey will allow students to study principles of designing, development, programming a...
WIND GENERATORS SIMULATION USING SPECTRAL-CORRELATION THEORY OF RANDOM PROCESSES
Introduction. Currently, there is a significant development of the industry, which transforms the kinetic energy of the wind flow into electrical energy. Wind power plants are included in the common network, which leads...