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5 Maszyny Elektryczne : zeszyty problemowe
1 Napędy i Sterowanie
1 Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały
1 Scientific Papers of The Institute of Electrical Machines, Drives and Measurements of the Wrocław University of Science and Technology Series: Studies and Research

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Rozruch silników synchronicznych dużej mocy przy częściowym zasilaniu uzwojenia stojana

Zawilak T.

Maszyny Elektryczne : zeszyty problemowe

2009

Nr 84

33-37

A concept of part-winding starting of high power synchronous motors is presented. During the start up some of the parallel branches are directly supplied from a power network whereas the residual branches are disconnected. After start up of the motor all branches are fed in parallel. Calculated with FEM transients of torque, speed and current during start up are presented.

Rozruch silnika głębokożłobkowego w układzie łagodnego rozruchu - aspekt energetyczny

Mróz J.

Maszyny Elektryczne : zeszyty problemowe

2009

Nr 81

17-22

During the soft start-up of the induction motor, various negative phenomena connected with considerable heat emissions in the motor’s winding are observed. They may, particularly in the case of the prolonged start-up, result in a damage to the squirrel – cage winding. What is more, torque impulses may be harmful to the elements of the driving system. The article discusses the use of the soft start-up and indicates that it helps to minimize only some of the negative phenomena. There are cases in which the soft start – up proves to be an additional risk to the motor. The distribution of the energy emitted in particular elements of the motor’s winding has been calculated, both during the start-up with the use of the soft start-up and during the direct on-line start-up, in the deep-bar 320 kW motor. There are giving laboratory tests: time-current, speed, torque and temperature rise of the rotor’s bar in the low-power induction motor during start-up.

Łagodny rozruch silników prądu przemiennego dużej mocy

Zawilak T., Zawilak J.

Maszyny Elektryczne : zeszyty problemowe

2009

Nr 81

11-16

This paper presents opportunities to alleviate process during start-up AC motors. Methods based on stator starter and autotransformer applications are described. A new concept of gentle start based on polechanging winding is shown. This method enables effective run up current reduction and smooth synchronization of the synchronous motors.

Energia wydzielona w uzwojeniach silnika indukcyjnego podczas rozruchu w układzie łagodnego rozruchu

Mróz J.

Maszyny Elektryczne : zeszyty problemowe

2009

Nr 84

121-126

During the soft start-up of the induction motor, various negative phenomena connected with considerable heat emissions in the motor’s winding are observed. They may, particularly in the case of the prolonged start-up, result in a damage to the squirrel – cage winding. What is more, torque impulses may be harmful to the elements of the driving system. The article discusses the use of the soft start-up and indicates that it helps to minimize only some of the negative phenomena. There are cases in which the soft start – up proves to be an additional risk to the motor. The distribution of the energy emitted in particular elements of the motor’s winding has been calculated, both during the start-up with the use of the soft start-up and during the direct on-line start-up, in the deep-bar 320 kW motor. For the purpose of the illustration of the analysis, the temperature of the rotor’s winding in the low-power induction motor under the discussed operating conditions has been altered.

Rozruch silników dużej mocy prądu przemiennego przy rozdzielonych uzwojeniach stojana

Zawilak T.

Maszyny Elektryczne : zeszyty problemowe

2008

Nr 80

233-237

A concept of part-winding starting of high power induction motors is presented. During the start up some of the parallel branches are directly supplied from a power network whereas the residual branches are disconnected. After start up of the motor all branches are fed in parallel. Calculated with FEM torque-speed characteristics for the selected connecting configurations are attached. Transients of torque, speed and current during start up are also presented.

Innowacyjny cel – łagodny rozruch

Hund T.

Napędy i Sterowanie

2005

R. 7, nr 9

28--33

Rozszerzona rodzina układów łagodnego rozruchu Sirius oferuje atrakcyjne rozwiązania dla prawie wszystkich zastosowań związanych z napędami, a dodatkowo przynosi wyraźne oszczędności.

Badania porównawcze silnika indukcyjnego klatkowego podczas różnych sposobów rozruchu

Mróz J.

Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały

2000

Vol. 48, nr 20

50-57

Przedstawiono badania laboratoryjne różnych metod rozruchu silnika klatkowego: rozruch bezpośredni, rozruch łagodny i częstotliwościowy. Podano przebiegi czasowe prądu, prędkości, momentu, częstotliwości i zmiany temperatury pręta klatki w czasie rozruchu.

The paper shows laboratory tests of different methods of squirrel-cage motor starting: direct starting, starting using soft-starter and inverter. There are giving time-current, speed, torque, frequency characteristics and temperature rise of rotor's bar during start-up.