Title :
Vector control of very-high-speed PM machines
Author :
Borisavljevic, A. ; Brands, M. ; Lomonova, E.
Author_Institution :
Electromech. & Power Electron. (EPE) Group, Eindhoven Univ. of Technol., Eindhoven, Netherlands
Abstract :
Although demand for very-high-speed machines is steadily growing, closed-loop control of such machines is rarely reported in literature. Field-oriented control of high speed machines meets a number of challenges: strong cross-coupling between orthogonal components of the voltage and current vectors, great variation of machine parameters during operation, an exceptionally negative influence of a delay and dead-time on the control stability and a short switching period available for the execution of the digital control. This paper gives rigorous representation of a control system with a high-speed permanent magnet synchronous machine in the rotating reference system. Two different methods of decoupling the current control are analyzed; especially, the effects of parameter variation and delay in the control loop are taken into account. The paper uses the development of a vector controller for a high-speed micro-turbine generator as a test case.
Keywords :
closed loop systems; delays; digital control; electric current control; machine vector control; permanent magnet machines; stability; synchronous machines; closed-loop control system; control stability; current control; current vectors; delay; digital control; field-oriented control; high-speed microturbine generator; high-speed permanent magnet synchronous machine; machine vector control; orthogonal components; parameter variation effect; rotating reference system; short switching period; very-high-speed PM machines; Control systems; Delay; Feedforward neural networks; Generators; Mathematical model; Transfer functions; Vectors; PM synchronous machines; field-oriented control; high-speed machines; permanent magnet machines; vector control;
Conference_Titel :
Electrical Machines (ICEM), 2012 XXth International Conference on
Conference_Location :
Marseille
Print_ISBN :
978-1-4673-0143-5
Electronic_ISBN :
978-1-4673-0141-1
DOI :
10.1109/ICElMach.2012.6350229