access icon free Carrier-based PWM control strategy for three-level indirect matrix converter

© The Institution of Engineering and Technology
Received 05/02/2018, Accepted 26/03/2019, Revised 07/03/2019, Published 02/04/2019

This article proposes a new carrier-based pulse width modulation (CBPWM) strategy for the control of TLIMC. The duty ratios of the rectifier stage and inverter stage are calculated by the SVPWM method. A carrier is constructed and combined with duty ratios to obtain modulation waves, which are regular and determined by the input voltage and output reference voltage. Then, the modulation waves are compared with the same carrier to obtain pulse signals. The pulse signals are used to produce driving signals of power switches through logic operation. The rectifier stage and inverter stage are controlled by the driving signals to obtain three-phase symmetrical sinusoidal input and output waveforms. The proposed method is identical in output to the original SVPWM method. Finally, simulation and experimental results are provided to verify the feasibility and validity of the proposed method.

Inspec keywords: matrix convertors; power conversion harmonics; pulse width modulation; power factor; switching convertors; PWM power convertors; PWM invertors

Other keywords: duty ratios; carrier-based pulse width modulation strategy; inverter stage; pulse signals; three-level indirect matrix converter; input voltage; modulation waves; driving signals; three-phase symmetrical sinusoidal input; rectifier stage; carrier-based PWM control strategy; original SVPWM method

Subjects: Control of electric power systems; Power convertors and power supplies to apparatus; AC-AC power convertors; Power electronics, supply and supervisory circuits

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