. "RIV/49777513:23220/08:00500052" . "Our department cooperates with the \u0160koda Electric Company on a squirrel cage asynchronous machine which is designed for traction purposes. The asynchronous machine will be powered by a frequency converter. Due to this fact the supply voltage frequency could be the same as a short circuit ring natural frequency. In this case the rotor bars can be broken away from the ring in a very short time. In this paper the typical mode of operation of a locomotive is analyzed. The aim is to determine the expected frequency of various modes of operation and choose the dangerous frequency of a supply source. This dangerous frequency has to be skipped as fast as possible." . "Probl\u00E9my klece nakr\u00E1tko trak\u010Dn\u00EDch asynchronn\u00EDch motor\u016F"@cs . "3"^^ . . . "Probl\u00E9my klece nakr\u00E1tko trak\u010Dn\u00EDch asynchronn\u00EDch motor\u016F"@cs . "3"^^ . "P(2A-2TP1/139)" . "Prague" . . "The Problems of Squirrel-Cage of Traction Asynchronous Motor" . "Hru\u0161ka, Karel" . "squirell cage; asynchronous machine; natural frequency"@en . "Skala, Bohumil" . "Kindl, Vladim\u00EDr" . "Our department cooperates with the \u0160koda Electric Company on a squirrel cage asynchronous machine which is designed for traction purposes. The asynchronous machine will be powered by a frequency converter. Due to this fact the supply voltage frequency could be the same as a short circuit ring natural frequency. In this case the rotor bars can be broken away from the ring in a very short time. In this paper the typical mode of operation of a locomotive is analyzed. The aim is to determine the expected frequency of various modes of operation and choose the dangerous frequency of a supply source. This dangerous frequency has to be skipped as fast as possible."@en . . . . . . . . . "389912" . "23220" . . "\u010Cesk\u00E9 vysok\u00E9 u\u010Den\u00ED technick\u00E9 v Praze" . . "[E4A16C404ED5]" . "4"^^ . . . "The Problems of Squirrel-Cage of Traction Asynchronous Motor" . . "The Problems of Squirrel-Cage of Traction Asynchronous Motor"@en . "Na\u0161e odd\u011Blen\u00ED spolupracuje se \u0160KODA ELECTRIC na asynchronn\u00EDm stroji s klec\u00ED nakr\u00E1tko pro trak\u010Dn\u00ED \u00FA\u010Dely. Asynchronn\u00ED stroj bude nap\u00E1jen frekven\u010Dn\u00EDm m\u011Bni\u010Dem. Kv\u016Fli tomuto faktu mohou b\u00FDt shodn\u00E9 frekvence nap\u00E1jen\u00ED a vlastn\u00ED frekvence klece nakr\u00E1tko. V tomto p\u0159\u00EDpad\u011B m\u016F\u017Ee doj\u00EDt k odtr\u017Een\u00ED ty\u010D\u00ED od kruhu ve velmi kr\u00E1tk\u00E9m \u010Dase. V tomto p\u0159\u00EDsp\u011Bvku je analyzov\u00E1n typick\u00FD provozn\u00ED stav lokomotivy. C\u00EDlem pak je ur\u010Dit o\u010Dek\u00E1vateln\u00E9 frekvence v r\u016Fzn\u00FDch re\u017Eimech provozu a ur\u010Dit nebezpe\u010Dn\u00E9 fekvence nap\u00E1jec\u00EDho zdroje. Tyto nebezpe\u010Dn\u00E9 frekvence je pak t\u0159eba p\u0159esko\u010Dit tak rychle jak je jen mo\u017En\u00E9."@cs . "ISEM 2008" . "The Problems of Squirrel-Cage of Traction Asynchronous Motor"@en . "978-80-01-04172-7" . "RIV/49777513:23220/08:00500052!RIV09-MPO-23220___" .