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High performance multilevel converter topology for interfacing energy storage systems with medium voltage grids (2010)
Conference Proceeding

This paper proposes a high performance hybrid cascaded H-Bridge (HB) Multilevel Converter (MLC) with integrated Series Active Power Filter SAPF for interfacing energy storage systems with medium voltage grids. Isolated DC sources comprised of modular... Read More about High performance multilevel converter topology for interfacing energy storage systems with medium voltage grids.

Hybrid cascaded multilevel converter with integrated series Active Power Filter for interfacing energy storage system to medium voltage grid (2010)
Conference Proceeding

This paper presents a new control strategy for a high performance hybrid cascaded H-Bridge HB multilevel converter with integrated series Active Power Filter Stage APFS. Unequal DC voltage sources are used to energise the converter's HBs. This offers... Read More about Hybrid cascaded multilevel converter with integrated series Active Power Filter for interfacing energy storage system to medium voltage grid.

Wind turbine-energy storage control system for delivering constant demand power shared by DFIGs through droop characteristics (2009)
Conference Proceeding

This paper investigates embedding Energy Storage (ES) with multiple wind turbines in order to deliver to the grid a smooth and constant power as demanded by the system operator. The demand power is shared by DFIGs proportional to their ratings utiliz... Read More about Wind turbine-energy storage control system for delivering constant demand power shared by DFIGs through droop characteristics.

A cost-effective solution to power the gate drivers of multilevel inverters using the bootstrap power supply technique (2009)
Conference Proceeding

Multilevel inverters are traditionally seen as a step forward in DC/AC conversion, providing more output voltage levels, better quality of the generated waveform and lower switching losses than the two-level and can process higher voltages with a giv... Read More about A cost-effective solution to power the gate drivers of multilevel inverters using the bootstrap power supply technique.

A power electronic controlled dump load with negligible harmonics for accurate loading used in testing small wind turbines
Conference Proceeding

Permanent magnet synchronous generators (PMSG) are at the core of small scale wind power generators manufactured by a wide range of manufacturers in different configurations: vertical or horizontal axis blades, with various geometries and aerodynamic... Read More about A power electronic controlled dump load with negligible harmonics for accurate loading used in testing small wind turbines.

Efficiency evaluation of a novel supercapattery stack with a power electronic interface for energy storage systems
Conference Proceeding

The increase of renewable energy generation seen as the only way to ensure clean and sustainable development, is under scrutiny due to its intermittent nature and an insufficient development of com-plementary technologies such as electrical energy st... Read More about Efficiency evaluation of a novel supercapattery stack with a power electronic interface for energy storage systems.

A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability
Conference Proceeding

The current source inverter (CSI) is preferred to interface a renewable source such photovoltaics (PV) to the AC power grid because it can provide smooth current source in the DC side, which fits to the PV behaviour and also steps-up the voltage from... Read More about A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability.

A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications
Conference Proceeding

Renewable energy sources such as photovoltaics (PVs) or fuel cells (FCs) are not fitted for direct power grid connection because they deliver DC voltage and current. In addition, they also have a high internal resistance/nonlinear V/I dependence, whi... Read More about A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications.

A new single-stage current source inverter for photovoltaic and fuel cell applications using reverse blocking IGBTs
Conference Proceeding

Renewable energy sources such as photovoltaics (PVs) or fuel cells (FCs) are not fitted for direct power grid connection because they deliver DC voltage and current. This is why a power electronic interface is needed, consisting usually of a current-... Read More about A new single-stage current source inverter for photovoltaic and fuel cell applications using reverse blocking IGBTs.

A new hybrid cycloconverter with smooth output voltage generation capability and accurate control of the circulating current
Conference Proceeding

Nowadays, power electronic converters based exclusively on IGBTs deliver excellent load side performance up to megawatt powers in the low voltage range (200-690V) and are steadily gaining performance in the medium voltage range as well. However, the... Read More about A new hybrid cycloconverter with smooth output voltage generation capability and accurate control of the circulating current.

A hybrid indirect matrix converter immune to unbalanced voltage supply, with reduced switching losses and improved voltage transfer ratio
Conference Proceeding

Achieving a compact and efficient design of power electronic converters is not a straightforward procedure: minimizing the size of the filter requires a higher switching frequency that causes additional switching losses that will require a larger hea... Read More about A hybrid indirect matrix converter immune to unbalanced voltage supply, with reduced switching losses and improved voltage transfer ratio.