This paper proposes a simple grid-voltage sensorless alternative to the conventional PLL synchronization for a grid-connected converter equipped with an LCL filter. The grid-voltage magnitude and angle are estimated based only on the converter current and DC-voltage measurements. Reduced number of sensors decreases costs and amount of sensor wiring. The analytically derived design is validated experimentally.
|Title of host publication||The 16th European Conference on Power Electronics and Applications (EPE'14 ECCE Europe)|
|Place of Publication||Lappeenranta, Finland|
|Number of pages||10|
|Publication status||Published - 26 Aug 2014|
|MoE publication type||A4 Article in a conference publication|
Kukkola, J., & Hinkkanen, M. (2014). State observer for grid-voltage sensorless control of a grid-connected converter equipped with an LCL filter. In The 16th European Conference on Power Electronics and Applications (EPE'14 ECCE Europe) Lappeenranta, Finland. https://doi.org/10.1109/EPE.2014.6910740