Abstract
The Proportional-Resonant control is used in control schemes that directly act on AC variables avoiding synchronous frame transformation. In this paper, the PR controller is realized using an IIR digital filter and implemented using direct form II transposed structure. It has a simpler discrete time implementation, however, the disadvantage of being difficult to make them frequency adaptive, i.e. change the filter's resonant frequency. Simple closed loop expressions are derived for the coefficients in terms of resonant frequency, sampling time and damping factor. Based on this, a frequency adaptive proportional-resonant controller is proposed. It is shown that by modifying a single coefficient in the IIR realization, the controller adapts its resonant frequency to grid frequency fluctuation resulting in a simple and efficient frequency-adaptive proportional-resonant controller.
| Original language | English |
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| Title of host publication | Proceedings of the 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL) |
| Number of pages | 7 |
| Publisher | IEEE Press |
| Publication date | Jun 2018 |
| Pages | 1-7 |
| Article number | 8459950 |
| ISBN (Print) | 978-1-5386-5542-9 |
| ISBN (Electronic) | 978-1-5386-5541-2 |
| DOIs | |
| Publication status | Published - Jun 2018 |
| Event | 19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 - Padova, Italy Duration: 25 Jun 2018 → 28 Jun 2018 |
Conference
| Conference | 19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 |
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| Country/Territory | Italy |
| City | Padova |
| Period | 25/06/2018 → 28/06/2018 |