Metoda wyznaczania rezystancji wirnika z uwzględnieniem wypierania prądu dla silników szybkoobrotowych

• Autorzy: Zielińska M.J. , Zieliński W.G.

Warianty tytułu

EN

A method for rotor resistance determination in high-speed motors with skin effect taken into account

• Konferencja: Problemy eksploatacji maszyn i napędów elektrycznych (2008; Rytro, Polska)
• Języki publikacji: PL

Abstrakty

EN

High speed motors are supplied with 400-1500Hz frequency voltage. They operate in special conditions and have a structure and properties that differentiate them from classic machines. In particular, they are distinguished by the high frequency of supply voltage, intensive cooling introduced to reduce the size of the motor, and closed rotor slots used to minimize vibrations and noise. In the discussed motors, the closed rotor slot was replaced with an open slot due to saturation of the magnetic circuit by the slot leakage flux. The resistance increase coefficient for rotor cage bar as a function of current flowing through the bar was estimated and then total rotor resistance was determined. Subsequently, the resistance calculated on the basis of geometric dimensions with skin effect taken under consideration was verified against results obtained from measurements. It was proved that short-circuit resistance is not a constant and depends on the value and frequency of current. It also includes a component which derives from additional losses occurring in solid construction elements and in rotor cage bars. The paper also presents descriptions showing changes in short-circuit resistance as a function of the motor's current determined on the basis of measurements with parametrically variable frequency.

Słowa kluczowe

PL

rezystancja wirnika; silnik szybkoobrotowy; silniki elektryczne; wypieranie prądu

• Wydawca: Sieć Badawcza Łukasiewicz - Górnośląski Instytut Technologiczny
• Czasopismo: Maszyny Elektryczne : zeszyty problemowe
• Rocznik: 2008
• Tom: Nr 80
• Strony: 155--157
• Opis fizyczny: Bibliogr. 3 poz., rys., tab.

Twórcy

autor

Zielińska M.J.

autor

Zieliński W.G.

• Politechnika Lubelska, Lublin

Bibliografia

• [1]. Dubicki B.: Maszyny elektryczne, Tom III: Silniki indukcyjne, WNT, Warszawa 1964.
• [2]. Zielińska M., Zieliński W.: Chosen electomagnetic parameters of asynchronus high-speed motors of reduced noise level. Electromagnetic Devices and Processes in Environment Protection the Second Conference, str 261-264, Nałęczów 1997.
• [3]. Zielińska M., Zieliński W.: Własności mechaniczne szybkoobrotowych indukcyjnych silników klatkowych. XI Seminarium Techniczne BOBRME Komel. Katowice 2001.