The electronic realization of synchronous machines: model matching, angle tracking and energy shaping techniques
- Journal Article
Rights / licenseIn Copyright - Non-Commercial Use Permitted
In this paper, we investigate grid-following and grid-forming control strategies starting from the nonlinear dynamics of the DC/AC converter. An electronic synchronous machine is an inverter whose the integral of the DC-bus measurement generates the angle of the instantaneous modulation vector. We show how this minimal augmentation represents an exact physical realization without requiring inner current loops. The DC-link capacitance becomes the equivalent rotational inertia of the converter. Additional features such as a novel phase-locked-loop design, a voltage controller and a power set-point tracking mechanism are then designed via two energy-shaping techniques. One energy function is used to implement a grid-following control scheme, via the inherent synchronizing torque, while the other is used to implement a grid-forming control scheme, by uncovering active-power droop. The results are first derived systematically, and then evaluated experimentally on a front-to-front setup. Show more
Journal / seriesIEEE Transactions on Power Electronics
Pages / Article No.
Subjectsynchronization; power conversion; SYNCHRONOUS MACHINES (ELECTRICAL MACHINES); Control system design; POWER ELECTRONICS; phase locked loops
Organisational unit02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.
09478 - Dörfler, Florian / Dörfler, Florian
160573 - Plug-and-Play Control & Optimization in Microgrids (SNF)
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Is cited by: https://doi.org/10.3929/ethz-b-000419315
NotesSubmitted to IEEE Transactions on Power Electronics, June 21, 2019. Revision R1
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