Torque Control of an Induction Machine Based on Partial Dynamic Inversion
In the paper induction machine (IM) torque control is studied as an example of a three-dimensional nonholonomic integrator that includes drift terms. By expanding Brocketts controller derived for the driftless systems, a control structure is proposed that guarantees natural adjustment of both the amplitude and the frequency modulation of the sinusoidal stator current vector. The rotor flux linkage vector is implicitly forced to track natural periodic orbits satisfying non-holonomic constraints of the IM. Main features of the proposed control include fast dynamics of the torque response, maximal torque per amp ratio for nominal parameters, exponential stability, and robustness regarding expected parameter variations. The overall IM control scheme requires cascaded high-gain current controllers together with rotor flux linkage vector estimation. Simulation and experimental results illustrate the main characteristics of the proposed control with the emphasis on the quality of the generated machine torque and estimated rotor flux linkage orbits.
Induction machine Torque control Non-holonomic systems with drift Current modulation Efficiency mazimization
Bojan Grcar Peter Cafuta Gorazd Stumberger Jozef Ritonja Anton Hofer
University of Maribor, Faculty of Electrical Engineering and Computer Science, Smetanova 17, 2000 Ma TU Graz, Institute for Control and Automation, 8010 Graz, Kopernikusgasse 24/II, Austria
国际会议
2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)
广西桂林
英文
797-803
2009-06-17（万方平台首次上网日期，不代表论文的发表时间）