An Analysis of the Dynamic Processes Triggered in Starting a High-Speed Permanent-Magnet Synchronous Motor
DOI:
https://doi.org/10.24160/1993-6982-2017-2-77-81Keywords:
high-speed synchronous permanent-magnet electric motor, hydrodynamic fluid film bearings, microturbine units, frequency control, vector control, combined algorithmAbstract
The dynamic processes triggered in starting a high-speed permanent-magnet synchronous machine used in modern microturbine units (MTUs) as a turbine generator are analyzed. The main factors causing complexity of starting high-speed permanent-magnet synchronous machines, which generates the need to develop special means and algorithms for starting them, are outlined. The MTU starting method in which the synchronous permanent-magnet machine intended to operate as a generator is used as an electric motor is considered. A twostage combined algorithm combining open-loop frequency control at the initial stage and closed-loop vector control at the subsequent state is described. A digital simulation model is developed, using which the starting process efficiency and reliability are analyzed. Тhe analysis has shown that, in order to keep the permanent-magnet synchronous motor in synchronism at the stage of its open-loop frequency control, the mechanical characteristic of the air-foil bearings used in the MTUs shall be taken into account. It has also been found that the moment of time at which the control is switched over from the open-loop to the closed-loop arrangement has a significant influence on implementing the startup mode. The control system optimal startup settings at which the synchronism condition is fulfilled and the reliable and fast startup is ensured are determined.
References
2. Понамарева Л.Н., Румянцев М.Ю., Сизякин А.В. Алгоритмы управления высокоскоростными электротурбомашинами в режиме запуска // Новое в российской электроэнергетике. М.: Информационное агентство «Энергопресс». 2016. № 5. С. 18—35.
3. Понамарева Л.Н., Нагайцев В.И., Румянцев М.Ю. Анализ влияния параметров высокочастотного синхронного магнитоэлектрического двигателя на его свойства при частотном запуске // Новое в российской электроэнергетике. М.: Информационное агентство «Энергопресс» 2016. № 9. С. 41—50.
4. Балагуров В.А., Галтеев Ф.Ф., Ларионов А.Н. Электрические машины с постоянными магнитами. М.-Л.: Энергия, 1964.
5. Прозоров В.А., Рогачевский В.С. Частотный пуск синхронных магнитоэлектрических двигателей при ограничении величины тока // Электричество. 1971. № 2.
#
1. Ovchinnikov I.E. Ventil'nye Elektricheskie Dvigateli i Privod na ikh Osnove (Malaya i Srednyaya Moshchnost'): Kurs Lektsiy. SPb.: KORONA–Vek, 2006. (in Russian).
2. Ponamareva L.N., Rumyantsev M.Yu., Sizyakin A.V. Algoritmy Upravleniya Vysokoskorostnymi Elektro-Turbomashinami v Rezhime Zapuska // Novoe v Rossiyskoy Elektroenergetike. M.: Informatsionnoe Agentstvo «Energopress». 2016;5:18—35. (in Russian).
3. Ponamareva L.N., Nagaytsev V.I., Rumyantsev M.Yu. Analiz Vliyaniya Parametrov Vysokochastotnogo Sinkhronnogo Magnitoelektricheskogo Dvigatelya na ego Svoystva pri Chastotnom Zapuske // Novoe v Rossiyskoy Elektroenergetike. M.: Informatsionnoe Agentstvo «Energopress» 2016;9:41—50. (in Russian).
4. Balagurov V.A., Galteev F.F., Larionov A.N. Elektricheskie Mashiny s Postoyannymi Magnitami. M.- L.: Energiya, 1964. (in Russian).
5. Prozorov V.A., Rogachevskiy V.S. Chastotnyy Pusk Sinkhronnykh Magnitoelektricheskikh Dvigateley pri Ogranichenii Velichiny Toka // Elektrichestvo. 1971;2. (in Russian).
