Discrete-Time Domain Modeling of Voltage Source Inverters in Standalone Applications: Enhancement of Regulators Performance by Means of Smith Predictor
| Autor: | Francisco D. Freijedo, Luiz Antonio de Souza Ribeiro, Michele Pastorelli, Federico Bosio, Josep M. Guerrero |
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| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry voltage control 020208 electrical & electronic engineering 05 social sciences Bandwidth (signal processing) 02 engineering and technology Voltage regulator power quality Inductor Smith predictor Power quality Control theory Voltage control 0202 electrical engineering electronic engineering information engineering Electronic engineering 0501 psychology and cognitive sciences Current control Voltage source Voltage regulation Electrical and Electronic Engineering business 050107 human factors Decoupling (electronics) Pulse-width modulation |
| Zdroj: | Federico, D B, de Sousa Ribeiro, L A, Freijedo Fernandez, F D, Pastorelli, M & Guerrero, J M 2017, ' Discrete-Time Domain Modelling of Voltage Source Inverters in Standalone Applications : Enhancement of Regulators Performance by Means of Smith Predictor ', I E E E Transactions on Power Electronics, vol. 32, no. 10, pp. 8100-8114 . https://doi.org/10.1109/TPEL.2016.2632527 |
| ISSN: | 1941-0107 0885-8993 |
| DOI: | 10.1109/tpel.2016.2632527 |
| Popis: | The decoupling of the capacitor voltage and inductor current has been shown to improve significantly the dynamic performance of voltage source inverters in standalone applications. However, the computation and pulse width modulation delays still limit the achievable bandwidth. In this paper, a discrete-time domain modeling of an LC plant with consideration of delay and sample-and-hold effects on the state feedback cross-coupling decoupling is derived. From this plant formulation, current controllers with wide bandwidth and good relative stability properties are developed. Two controllers based on lead compensation and Smith predictor design, respectively, are obtained. Subsequently, the voltage regulator is also designed for a wide bandwidth, which permits the inclusion of resonant filters for the steady-state mitigation of odd harmonics at nonlinear unbalance load terminals. Discrete-time domain implementation issues of an antiwind up scheme are discussed as well, highlighting the limitations of some discretization methods. Extensive experimental results, including a short-circuit test, verify the theoretical analysis. |
| Databáze: | OpenAIRE |
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