Non-linear controller for storage systems with regulated output voltage and safe current slew-rate for the battery
| Autor: | Carlos Andrés Ramos-Paja, Juan David Bastidas-Rodríguez, Daniel González-Montoya |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Revista UIS Ingenierías, Vol 19, Iss 3 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1657-4583 2145-8456 |
| Popis: | This paper proposes a non-linear control structure for a hybrid energy storage system with a series architecture, which regulates the voltage of a DC bus (output voltage) and ensures that the battery current fulfills the current slew-rate restriction. The proposed solution has two stages, in the first one, the battery is connected to a buck/boost converter that feeds an auxiliary capacitor. In the second stage, the auxiliary capacitor is connected to a DC bus through a second buck/boost converter. Both converters are regulated using cascaded control systems, where the inner loops are slidingmode controllers of the inductors’ current, and the outer loops in the first and second converter are designed to limit the slew-rate of the battery current and to regulate the dc bus voltage, respectively. The paper provides the design procedure for the controllers and validates its performance with simulation results for the power system operating in charging, discharging and stand-by modes. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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