Current Advances in Electric Motors, Drives and Power Converters Technologies

Dear Colleagues,

Power converters, including DC/AC inverters and DC/DC converters, have two basic applications: efficient motor drives and power supplies, e.g., in UPS systems and on- or off-grid renewable energy (PV or wind turbines) systems. Motor driving and supply systems can have different requirements according to specific standards, but have one requirement in common—high efficiency. Using modulation techniques (e.g., space vector modulation), three-phase motor drives require the best use of the input DC voltage, allowing for harmonics in line voltages. Today, automotive applications of motor drives are wide-ranging. In power supplies, output voltage distortions for the standard nonlinear load should be reduced, while the over- and under-voltage and settling time after dynamic load change should be kept within allowable boundaries. All these requirements can be fulfilled by means of modern technologies, for example, using WBG switching transistors (as SiC or GaN FETs) that allow for lower power losses with a higher switching frequency; using multilevel inverters; and using new control algorithms that allow for faster transient response and lower steady state errors. Novel metaheuristic (e.g., CSO) or fuzzy logic control techniques can be used in power converters' adaptive control, while power DC/DC converters have unlimited applications. Similarly to inverters, these new techniques and technologies increase efficiency and output voltage quality. Such models are required for approaches to the control of all kinds of power converters.

Prof. Dr. Zbigniew Rymarski
Prof. Dr. Przemysław Ptak
Guest Editors

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