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Control design for multiphase synchronous buck converters based on exact constant resistive output impedance
(Institute of Electrical and Electronics Engineers (IEEE), 2013-11)
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This paper describes a control design methodology
based on output impedance analysis for multiphase synchronous
buck converters. This design leads to an optimal output voltage
transient response. Two design alternatives ...
Avoiding overvoltage problems in three-phase distributed-generation systems during unbalanced voltage sags
(2020-02-01)
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Article.
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During voltage sags, distributed generation systems must fulfil specific grid-code requirements for reactive current injection. This ancillary service can produce overvoltage problems in networks operating in unbalanced ...
Voltage support control strategies for static synchronous compensators under unbalanced voltage sags
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
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Static synchronous compensators have been broadly
employed for the provision of electrical ac network services,
which include voltage regulation, network balance, and stability
improvement. Several studies of such ...
Control scheme for photovoltaic three-phase inverters to minimize peak currents during unbalanced grid-voltage sags
(2012)
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Nowadays, the majority of the photovoltaic (PV)
power sources are connected to the public grid. One of the main
connection problems occurs when voltage sags appear in the grid
due to short circuits, lightning, etc. ...
Maximum current injection method for grid-forming inverters in an islanded microgrid subject to short circuits
(2023-02-03)
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In islanded microgrids, when a short circuit or a sudden overload occurs, it provokes an abrupt increment in the currents supplied by the generation nodes, which feed the load collaboratively. This is particularly challenging ...
An adaptive prefiltering method to improve the speed/accuracy tradeoff of voltage sequence detection methods under adverse grid conditions
(Institute of Electrical and Electronics Engineers (IEEE), 2013-07-23)
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This paper deals with the improvement of the transient response and harmonic, subharmonic, and dc-offset voltage
rejection capability of a grid voltage sequence detection scheme based on a second-order generalized integrator ...
Positive sequence voltage control, full negative sequence cancellation and current limitation for static compensators
(Institute of Electrical and Electronics Engineers (IEEE), 2021-12)
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This paper presents a control scheme in the stationary reference frame for Static Synchronous Compensators that provides three features: 1) regulation of the positive sequence voltage to the nominal value, 2) full cancellation ...
Active and reactive power strategies with peak current limitation for distributed generation inverters during unbalanced grid faults
(Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
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Distributed generation inverters have become a key element to improve grid efficiency and reliability, particularly during grid faults. Under these severe perturbations, inverter-based power sources should accomplish ...
Reactive power control for distributed generation power plants to comply with voltage limits during grid faults
(2014-01-20)
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Grid faults are one of the most severe problems for network operation. Distributed generation power plants can help to mitigate the adverse effects of these perturbations by injecting reactive power during the sag and the ...
Simple low-cost hysteretic controller for multiphase synchronous buck converters
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011-06)
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This paper presents a novel hysteretic controller for
a multiphase synchronous buck converter supplying low voltage,
high current, and high slew-rate loads. The control scheme implements
the main control functions for ...