Authors: Sergio Toledo, Magno Ayala, Edgar Maqueda, Raul Gregor, Alfredo Renault, Marco Rivera, Tomislav Dragicevic and Patrick Wheeler

Extended abstract:

Renewable energy generation for distributed generation systems are emerging as a plausible solution for the world’s growing energy demands. In this context multi-phase wind generation systems are a feasible option, consisting of a renewable AC source that needs efficient and controlled power conversion stages. The possibility to split the power and the current between a higher number of phases, allowing per-phase inverter power rating reduction is the main reason of selecting multiphase topologies for wind turbines. In this paper a novel active and reactive power control strategy based on two cascade control loops using a combination of classical PR controller and Model Based Predictive Voltage Control is proposed. Furthermore, the generator is a permanent magnet synchronous machine, and the power stage is based on a multi-modular direct matrix converter (MMC) topology providing interesting features to the scheme such as the ability to provide three-phase sinusoidal voltages with variable amplitude and frequency using fully controlled bi-directional switches without the use of storage energies elements reducing the size and weight. These characteristics make it attractive to use the MMC in applications where high-power density and compact converters are required. The performance of the whole system is analyzed regarding tracking of reference and THD with satisfying transient results and THD lower than 1.52 % in the injected current, thereby generally meeting international standards.

Proposed multi-modular matrix converter topology applied to the SpWEG


2021 Best IEEE Industrial Electronics Society Conference Paper Award (paper presented at 2020 IEEE International Conference on Industrial Technology (ICIT)

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