Przemienniki częstotliwości w wielosilnikowych napędach współbieżnych

• Autorzy: Azarewicz S. , Zalas A.

Warianty tytułu

EN

Frequency converters in multimotor concurrent drives

• Konferencja: Efektywność energetyczna napędów z silnikami elektrycznymi: [2 Międzynarodowe Forum] [2003; Spała, Polska]
• Języki publikacji: PL

Abstrakty

EN

This paper presents a multimotor concurrent drive whose slave drives are induction squirrel-cage motors supplied from frequency converters equipped with control systems for synchronizing the drives. The control system of the multimotor concurrent drive, the results of tests carried out on the drive and the problems encountered in its realization are discussed. The concurrent operation of drives in multimotor systems and the equalization of the loads carried by the drives still pose a problem. The proper concurrent operation of the drives is crucial for the quality of the operation of the whole system, the proper loading of the individual motors and for reducing the losses associated with the equalization of the loads. If the problems with proper and energy-saving equalization of loads and detracing of the set speed are solved, this will facilitate, among others, the construction of long belt conveyors equipped with intermediate drives. In many cases, the use of frequency-controlled drives as the slaves can be a satisfactory solution. A frequency-controlled drive or a conventional induction drive (e.g. with a soft-start starter) can be the master drive. A crucial problem in the realization of detracing drives is the proper choice of both the control system structure and the settings of the frequency converters' controllers. Conventional and digital PID controllers and equalizers preventing any velocity or acceleration errors are used in the control systems of frequency-controlled concurrent drives. A suitable control structure and proper controller settings ensure that the drive performs well in both static and dynamic states. The results of bench tests of a power transmission system in which the slave drive adjusts its speed to changes in the speed of the master drive, whereby a concurrent drive is formed, are presented. The influence of control system structure and controller settings on the quality of the realization of the set speed by the slave drive is analysed. Conclusions and recommendations concerning the realization of this type of drives are given. The function which pre-emptive velocity and acceleration equalizers perform in the considered drives is highlighted and the principles of programming the equalizers are explained.

Słowa kluczowe

PL

przemienniki częstotliwości; napęd współbieżny; napęd wielosilnikowy

• Wydawca: Sieć Badawcza Łukasiewicz - Górnośląski Instytut Technologiczny
• Czasopismo: Maszyny Elektryczne : zeszyty problemowe
• Rocznik: 2003
• Tom: Nr 67
• Strony: 53--58
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Azarewicz S.

• Instytut Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej

autor

Zalas A.

• Instytut Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej

Bibliografia

• [1] Azarewicz S. „Pozycjonowanie regulowanych częstotliwościowa napędów z silnikami indukcyjnymi klatkowymi", materiały III. Symp. „Sterowanie i Monitorowanie Układów Przemysłowych" 21 - 23. 06.99 Kazimierz Dolny.
• [2] Kosmol J., „Serwonapędy obrabiarek sterowanych numerycznie" WNT Warszawa 1998.
• [3] Prinschow G., „Technika sterowania obrabiarkami i robotami przemysłowymi", Oficyna Wydawnicza Politechniki Wrocławskiej, 1995.
• [4] Spong M. W. , Vidyasagar M., „Dynamika i sterowanie robotów "WNT 1997.