Name
Vanurin Vladimir Nikolayevich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
SSU SKNIIMESH
Web site url
—
Articles count: 7
In poultry industry, animal breeding, greenhouses and
vegetable stores a significant amount of fans with
asynchronous motors is used to create a microclimate.
The fan speed of the fan should be regulated in order
to improve the efficiency, so the multispeed motors are
used for the fan drives. Line produced two-speed motors
with a proportion of the poles number 1:2 have a
polar-switched Dahlander stator winding. Two-speed
motors with a proportion of the poles number 3:2 and
4:3 have only one stator winding which is poleswitched
by the method of amplitude phase shift keying.
A drawback of the windings is that they have different
energy indicators at different spin rates. In order
to create rational diagrams with switching according to
the number of poles, which is multiple of three, it is
proposed to implement a polyphase MMF modulation
of the three-phase winding. As a result of the study,
there were procured the stator windings at 4 and 6
poles, which enabled to change the spin speed of the
motor in the fan drives without breaking the drive
power circuit by the scheme Δ / ΥΥ
The schemes of the stator winding with double-wide-phase zone, allowing limiting the level of inrush current of induction motors without breaking the circuit power are presented in the article
In the article, we have presented the results of the harmonic analysis of pole-switching motor winding for a fan drive. The stator winding at 10/6 allow you to fully utilize the size of the basic six-pole engines, and the stator winding at 8/4 pole differ with simplified switching
In the article the following items are represented: mathematical formulation of asynchronous generator with cage rotor, condenser’s excitation and ramified 3-phase stator’s winding. Electromagnetic and electromechanical processes of generator in the isolated regime are described. Equations of voltage stability, equations of current, equations of rotor are used for describing of electricity circuits of generator
Influence of circuit and constructive signs of stator windings on parameters and operational properties of asynchronous generators is examined
Influence of circuit and constructive signs of stator and rotor windings on parameters and operational properties of asynchronous generators is examined
Influence of circuit and constructive signs of stator and rotor windings on parameters and operational properties of asynchronous generators is examined