FPGA Based Direct Model Predictive Current Control of PMSM Drives with 3L-NPC Power Converters

Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2016

Pages: 8Language: englishTyp: PDF

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Authors:
Zhang, Zhenbin; Hackl, Christoph; Kennel, Ralph (Technische Universität München, Germany)

Abstract:
Direct control techniques are interesting alternatives, in particular, for drive systems with multilevel and/or multi-phase power converters, for which the modulator design becomes rather complex. This work presents a direct model predictive current control (DMPCC) method for permanent-magnet synchronous machine (PMSM) drives fed by three level neutral point clamped (3L-NPC) power converters. The proposed DMPCC method takes the currents, neutral point voltage balancing and switching frequency regulations as control targets and is implemented on a FPGA based real-time controller. Its control performances are compared with the conventional direct torque control method with switching table (DTC-TB). Experimental results confirm that the proposed DMPCC scheme may outperform the conventional DTC-TB technique in steady-state with reduced tuning efforts.