Tomi Roinila
Tampere University of Technology
114 Papers
495 Citations
Tomi Roinila is an academic researcher from Tampere University of Technology. The author has contributed to research in topics: Electrical impedance & Computer science. The author has an hindex of 18, co-authored 92 publications. Previous affiliations of Tomi Roinila include Rensselaer Polytechnic Institute & University of South Carolina.
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Papers
Online Grid Impedance Measurement Using Discrete-Interval Binary Sequence Injection
TL;DR: In this article, a discrete-interval binary sequence (DIBS) is proposed to minimize the impact on the inverter operation, where the energy is maximized at specified harmonic frequencies based on the expected grid-impedance characteristics.
184
MIMO-Identification Techniques for Rapid Impedance-Based Stability Assessment of Three-Phase Systems in DQ Domain
TL;DR: In this paper, the use of orthogonal binary sequences (OBS) was used to simultaneously measure the output impedance and the grid impedance of a three-phase grid-connected inverter.
134
Fast Approach for Battery Impedance Identification Using Pseudo-Random Sequence Signals
TL;DR: It is shown that the ternary sequence provides accurate measurements and the effects of nonlinear dynamics of the battery impedance are reduced with respect to the PRBS measurements, with comprehensive amplitude and filtering design for battery impedance measurements.
Broadband methods for online grid impedance measurement
Tomi Roinila,Matti Vilkko,Jian Sun +2 more
- 28 Oct 2013
TL;DR: In this article, the authors proposed the use of maximum-length binary sequence (MLBS) injection and averaging Fourier techniques to overcome the drawbacks of impulse injection for online measurement of grid-connected inverters.
121
Online grid impedance measurement using discrete-interval binary sequence injection
Tomi Roinila,Matti Vilkko,Jian Sun +2 more
- 23 Jun 2013
TL;DR: In this paper, a discrete-interval binary sequence (DIBS) is proposed for real-time measurement of the grid impedance performed online by the inverters themselves, where the energy is maximized at specified harmonic frequencies to minimize the required level of signal injection.
93