Model predictive control of neutral-point clamped inverter with harmonic spectrum shaping

This paper proposes a variable sampling frequency model predictive control (VSF-MPC) to achieve fixed-switching frequency operation for a neutral-point clamped (NPC) inverter. The proposed control technique simultaneously considers load current control, balancing of DC-link capacitor voltages, mitig...

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Bibliographic Details
Main Authors: Rubinic, J., Yaramasu, V., Wu, B., Zargari, N.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Common-mode voltage
Cost function
current control
DC-AC power conversion
DC-link voltage balancing
digital control
finite control-set model predictive control (FCS-MPC)
Harmonic analysis
Inverters
neutral-point clamped (NPC) inverter
spectrum shaping
Switches
Switching frequency
variable sampling frequency (VSF)
Voltage control
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Summary:This paper proposes a variable sampling frequency model predictive control (VSF-MPC) to achieve fixed-switching frequency operation for a neutral-point clamped (NPC) inverter. The proposed control technique simultaneously considers load current control, balancing of DC-link capacitor voltages, mitigation of common-mode voltage, and elimination of even-order and inter-harmonics in the load current harmonic spectrum, while maintaining fixed-switching frequency operation. The challenges associated with weighting factor design are also addressed. Through the simulation and experimental tests on an NPC inverter, it has been demonstrated that the proposed method preserves high dynamic response nature of MPC, and predefined harmonic spectrum characteristic of classical space vector modulation.
ISSN:2329-3721
2329-3748
DOI:10.1109/ECCE.2015.7309760