15 research outputs found
Advanced research of the impact of rotor bars anisotropic conductivity on starting torque of an induction motor with a die-cast copper cage
The paper deals with an optimal design of an induction motor with a die-cast copper cage rotor characterized by an anisotropic layer in the upper part of the rotor bars. 1D FEM optimization of an explosion-proof induction motor with a die-cast copper rotor with overall parameters of a commercial induction motor with a die-cast aluminum rotor (180 kW, 1140 V, 1500 rpm) is made with the help of numeric computations. In the paper, the design features and experimental results are given. It is shown that induction motors with a special "starting" layer placed in the upper part the diecast copper rotor bar have maximum value of starting torque for relative conductivity factors ranging from 0.3 to 0.5. The basic performance data obtained in both bench and service tests of a prototype 210kW induction motor are in close agreement with analytical data.ΠΠ·Π»ΠΎΠΆΠ΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π²Π»ΠΈΡΠ½ΠΈΡ Π°Π½ΠΈΠ·ΠΎΡΡΠΎΠΏΠΈΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΡΡΠ΅ΡΠΆΠ½Π΅ΠΉ ΡΠΎΡΠΎΡΠ° Π½Π° ΠΏΡΡΠΊΠΎΠ²ΠΎΠΉ ΠΌΠΎΠΌΠ΅Π½Ρ Π°ΡΠΈΠ½Ρ
ΡΠΎΠ½Π½ΠΎΠ³ΠΎ Π΄Π²ΠΈΠ³Π°ΡΠ΅Π»Ρ, ΡΡΠ΅Π½Π΄ΠΎΠ²ΡΡ
ΠΈ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΈΡΠΏΡΡΠ°Π½ΠΈΠΉ Π²Π·ΡΡΠ²ΠΎΠ·Π°ΡΠΈΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π΄Π²ΠΈΠ³Π°ΡΠ΅Π»Ρ ΡΠΈΠΏΠ° 2ΠΠΠ3,5-210 ΠΌΠΎΡΠ½ΠΎΡΡΡΡ 210 ΠΊΠΡ Ρ Π»ΠΈΡΠΎΠΉ Π°Π½ΠΈΠ·ΠΎΡΡΠΎΠΏΠ½ΠΎΠΉ ΠΌΠ΅Π΄Π½ΠΎΠΉ ΠΎΠ±ΠΌΠΎΡΠΊΠΎΠΉ ΡΠΎΡΠΎΡΠ°
Morphometric features of the kidneys in children according to neonatal screening
The purpose of the study - to evaluate the morphometric parameters of the kidneys in children during neonatal screening with the calculation of volume and thickness to detect kidney hypoplasia.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ - ΠΎΡΠ΅Π½ΠΈΡΡ ΠΌΠΎΡΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΏΠΎΡΠ΅ΠΊ Ρ Π΄Π΅ΡΠ΅ΠΉ ΠΏΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ Π½Π΅ΠΎΠ½Π°ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΊΡΠΈΠ½ΠΈΠ½Π³Π° Ρ ΡΠ°ΡΡΠ΅ΡΠΎΠΌ ΠΎΠ±ΡΠ΅ΠΌΠ° ΠΈ ΡΠΎΠ»ΡΠΈΠ½Ρ Π΄Π»Ρ Π²ΡΡΠ²Π»Π΅Π½ΠΈΡ Π³ΠΈΠΏΠΎΠΏΠ»Π°Π·ΠΈΠΈ ΠΏΠΎΡΠ΅ΠΊ