ANALYTICAL CALCULATION AND OPTIMIZATION OF THE BASIC ELECTRMAG-NETIC LOSSES OF THE ENERGY OF THE FREQUENCY-CONTROLLED PERMANENT MAGNET SYNCHRONOUS MACHINE IN START-BRAKING REGIMES
Journal Title: Електромеханічні і енергозберігаючі системи - Year 2018, Vol 2, Issue 42
Abstract
Purpose. The article is devoted to the analytical calculation of the frequency-controlled permanent magnet syn-chronous machine for various types of control during the start-braking regimes of the main electromagnetic energy losses: for maintaining the zero value of the longitudinal projection of the generalized stator current vector; at the nominal value of the modulus of the generalized vector of stator flux coupling or with the best relation between the electromagnetic moment and the modulus of the generalized stator current vector of this machine. Metodology. In the course of the research, methods of mathematical interpolation, similarity theory, and imitation computer modeling were used. Results. Interpolated mathematical dependencies for the listed types of control are proposed for changing the current value of the module of the generalized vector stator current of the machine from the current value of the electromagnetic moment developed by it, which makes it possible to simplify the mathematical form of these dependences. Originality. Analytic dependences for calculating the main electromagnetic losses of the energy of the said machine in the start-braking regimes under different forms (linear, parabolic and quasi-optimal) of the trajectory of its velocity are obtained. On the basis of these dependencies, optimization (minimization) of the main electromagnetic losses of the energy of the considered machine in the start-braking regimes was carried out and analytical dependences were obtained for calculating the optimum values of the acceleration and deceleration times of this machine for the mentioned control types with different specified types of velocity trajectories. Practical value. The practical value of the obtained results consists in the quantitative estimation for the frequency-controlled permanent magnet synchronous machine of the minimum possible (with different types of control and various velocity trajectories) of the main electromagnetic energy in the start-braking regimes, as well as the optimum values of the acceleration and deceleration times of the machine, at which the basic electromagnetic energy losses are minimal.
Authors and Affiliations
Volodimir Volkov
Keywords
Related Articles
- EP ID EP659768
- DOI 10.30929/2072-2052.2018.2.42.8-22
- Views 198
- Downloads 0
TEMPERATURE DEPENDENCE OF THE DIELECTRIC LOSS FACTOR OF OIL-IMPREGNATED CONDENSER INSULATION FOR THE DIAGNOSIS OF HIGH-VOLTAGE APPARATUS IN THE ONLINE MODE
Purpose. To assess the possibility of using of temperature dependences of the basic diagnostic parameters of main insulation of apparatus with condenser oil impregnated paper insulation during estimation of their technic...
FEATURES OF CONTROLLED START OF SYNCHRONOUS MOTOR AS PART OF GROUP ELECTRIC DRIVE
Modern mining and metallurgical complexes are equipped with a group of identical technological units with a powerful synchronous electric drive. The starting of group synchronous electric drives, which are connected by a...
REACTIVE POWER CONSUMPTION OF A SIX-PHASE INDUCTION GENERATOR
Purpose. The purpose of this work is to estimate reactive consumption of a six-phase induction generator in comparison with three-phase induction generator at identical conditions. Methodology. Theoretical research of th...
COMPREHENSIVE MODEL OF AUTOMATED CONTROL SYSTEM OF HEATING IN MULTI-STOREY BUILDING
Purpose. To create a comprehensive model that describes the functioning of the control system in the district heating substation. Methodology. We have applied the passive multifactorial experiment with regression analysi...
SYNTHESIS MODEL OF THE PROCESS OF HEATING AND COOLING RODS IN THE PROTECTIVE HOUSING BASED ON EXPERIMENTAL STUDIES
Purpose. The work deals with processes of heating and cooling elements of the electrical machine for general cooling system control dependencies. The control actions of cooling fan drive are formed on basis of current se...