Authors: Sergio Toledo, Magno Ayala, Edgar Maqueda, Raul Gregor, Alfredo Renault, Marco Rivera, Tomislav Dragicevic and Patrick Wheeler
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.
2021 Best IEEE Industrial Electronics Society Conference Paper Award (paper presented at 2020 IEEE International Conference on Industrial Technology (ICIT)
Check full paper at: https://ieeexplore.ieee.org/document/9067285