Oscillator-based inverter control for islanded three-phase microgrids

Brian B. Johnson; Sairaj V. Dhople; James L. Cale; Abdullah O. Hamadeh; Philip T. Krein

doi:10.1109/JPHOTOV.2013.2280953

Oscillator-based inverter control for islanded three-phase microgrids

Brian B. Johnson, Sairaj V. Dhople, James L. Cale, Abdullah O. Hamadeh, Philip T. Krein

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A control scheme is proposed for an islanded low-inertia three-phase inverter-based microgrid with a high penetration of photovoltaic (PV) generation resources. The output of each inverter is programmed to emulate the dynamics of a nonlinear oscillator. The virtual oscillators within each controller are implicitly coupled through the physical electrical network. The asymptotic synchronization of the oscillators can be guaranteed by design, and as a result, a stable power system emerges innately with no communication between the inverters. Time-domain switching-level simulation results for a 45-kW microgrid with 33% PV penetration demonstrate the merits of the proposed technique; in particular they show that the load voltage can be maintained between prescribed bounds in spite of variations in incident irradiance and step changes in the load.

Original language	English (US)
Article number	6620994
Pages (from-to)	387-395
Number of pages	9
Journal	IEEE Journal of Photovoltaics
Volume	4
Issue number	1
DOIs	https://doi.org/10.1109/JPHOTOV.2013.2280953
State	Published - Jan 2014

Keywords

Microgrids
oscillators
photovoltaic inverter control
synchronization

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Online availability

10.1109/JPHOTOV.2013.2280953

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abstract = "A control scheme is proposed for an islanded low-inertia three-phase inverter-based microgrid with a high penetration of photovoltaic (PV) generation resources. The output of each inverter is programmed to emulate the dynamics of a nonlinear oscillator. The virtual oscillators within each controller are implicitly coupled through the physical electrical network. The asymptotic synchronization of the oscillators can be guaranteed by design, and as a result, a stable power system emerges innately with no communication between the inverters. Time-domain switching-level simulation results for a 45-kW microgrid with 33% PV penetration demonstrate the merits of the proposed technique; in particular they show that the load voltage can be maintained between prescribed bounds in spite of variations in incident irradiance and step changes in the load.",

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AU - Krein, Philip T.

PY - 2014/1

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N2 - A control scheme is proposed for an islanded low-inertia three-phase inverter-based microgrid with a high penetration of photovoltaic (PV) generation resources. The output of each inverter is programmed to emulate the dynamics of a nonlinear oscillator. The virtual oscillators within each controller are implicitly coupled through the physical electrical network. The asymptotic synchronization of the oscillators can be guaranteed by design, and as a result, a stable power system emerges innately with no communication between the inverters. Time-domain switching-level simulation results for a 45-kW microgrid with 33% PV penetration demonstrate the merits of the proposed technique; in particular they show that the load voltage can be maintained between prescribed bounds in spite of variations in incident irradiance and step changes in the load.

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Oscillator-based inverter control for islanded three-phase microgrids

Abstract

Keywords

ASJC Scopus subject areas

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