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This paper presents controller design of PEM fuel cell distributed generation. The configuration of the PEMFC DG system and the dynamic models for the PEMFC power plant and its power electronic interfacing are shown. Controlling the power flow from the fuel cell power plant to the synchronous generator, controller design methods for the power conditioning units are presented. The results confirm the...
This paper deals with the design, analysis, modeling and control of Fuel Cell based Distributed Generation System. This includes the modeling of Proton Electrolyte Membrane Fuel Cell and the Power Conditioning Unit interfacing the Fuel Cell to the Utility Grid with proper power flow control. The output of the Fuel Cell Stack is connected to the DC side of the Voltage Source Inverter for interfacing...
This paper presents a current control for single phase grid connected inverters. The method allows for inverter active and reactive power control. The method uses the Direct-Quadrature (DQ) synchronous reference frame transformation for single-phase converters. This method transforms an orthogonal pair consisting of the inverter output current and a time shifted version of this current from a stationary...
Active front-end converters with bidirectional power flow capability have been extensively used for utility applications of power electronics, in which the hybrid type with coupling capacitor in series connection is receiving much attention due to its low operating voltage and low switching ripples. This paper proposes an improved control strategy for hybrid active front-end converters in grid-connected...
This paper presented a grid-connected inverter incorporating multiple technical concepts like “single-stage”, “multilevel” and “transformerless”, and thus attracting in cost and efficiency. Also energy storage (ES) was integrated to assist extensive power regulation. A complete control scheme was developed to achieve wide range real/reactive power management involving pure real power, pure reactive...
Active front-end converters with bidirectional power flow capability have been extensively used for utility applications of power electronics. Large passive filters are normally required at the grid side of the converter to mitigate switching EMI noise. This may become a critical issue, in terms of installation space and potential resonance of the passive filter. This paper proposes a hybrid active...
The 48-pulse series connected 3-level neutral point clamped (NPC) converter approach has been used in unified power flow controller (UPFC) application due to its near sinusoidal voltage quality. This paper investigates the control and operation of series and shunt converters with 48-pulse voltage source converters (VSC) for UPFC application. A novel controller for series converter is designed based...
Previous research work has demonstrated that microgeneration improves security of supply and contributes to reduce carbon emissions. However, it has also been recognized that it imposes various challenges in particular with regards to network stability, control and protection. This paper focuses on controlling the power flow from converter-connected microgeneration units to the distribution network...
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