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Passivity-based control of multilevel cascade inverters: High-performance with reduced switching frequency
This paper approaches the control problem of (buck-type) single-phase multilevel cascade inverters. The main pursued objective is the generation of an output voltage waveform with very low harmonic distortion under reduced switching frequency operation. For developing the proposed controller a pulsewidth modulation-based design is first considered, in order to obtain a continuous time control law, to later on, using quantization arguments, modify it to achieve the reduced switching frequency. Owing to its proved capacity for generating high-performance circuit responses, in the high-frequency step design a passivity-based approach is followed while for the low-frequency one a hysteresis-type scheme is introduced. The usefulness of the scheme is validated via numerical simulations comparing the proposed scheme with a classical PWM-based design. Copyright © 2009 John Wiley %26 Sons, Ltd.
This paper approaches the control problem of (buck-type) single-phase multilevel cascade inverters. The main pursued objective is the generation of an output voltage waveform with very low harmonic distortion under reduced switching frequency operation. For developing the proposed controller a pulsewidth modulation-based design is first considered, in order to obtain a continuous time control law, to later on, using quantization arguments, modify it to achieve the reduced switching frequency. Owing to its proved capacity for generating high-performance circuit responses, in the high-frequency step design a passivity-based approach is followed while for the low-frequency one a hysteresis-type scheme is introduced. The usefulness of the scheme is validated via numerical simulations comparing the proposed scheme with a classical PWM-based design. Copyright © 2009 John Wiley & Sons, Ltd.
Multilevel converters; Multilevel inverters; Passivity-based control; Power electronics; Quantized control Continuous time control; Control problems; Frequency operation; High frequency HF; High-performance circuits; Low frequency; Multi-level cascade inverter; Multilevel converter; Multilevel inverter; Numerical simulation; Output voltages; Passivity based control; Quantized control; Reduced switching; Biology; Computer simulation; Design; Electric power supplies to apparatus; Power electronics; Pulse width modulation; Switching frequency; Passivation
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International Journal of Robust and Nonlinear Control
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