All Outputs (131)

A DC-DC boost converter with a wide input range and high voltage gain for fuel cell vehicles (2018)
Journal Article

In fuel cell vehicles, the output voltage of the fuel cell source is typically much lower than the voltage required by the DC bus and also this output voltage drops significantly as the output current increases. In order to match the output voltage o... Read More about A DC-DC boost converter with a wide input range and high voltage gain for fuel cell vehicles.

Influence of an inverter based DG on a double-ended fault location scheme (2018)
Journal Article

This paper describes the influence of Distributed Generation (DG) on a double ended fault location based on measuring the high frequency fault transients. The additional non-fundamental frequency current components from DG will influence the accuracy... Read More about Influence of an inverter based DG on a double-ended fault location scheme.

Zero and low-speed sensorless control of induction machines using only fundamental pulse width modulation waveform excitation (2018)
Book Chapter

This chapter presents a position sensorless method for induction machines that only relies on the fundamental pulse width modulation (PWM) waveforms to excite saliency. Position signals can be synthesized through the measurement of the derivatives of... Read More about Zero and low-speed sensorless control of induction machines using only fundamental pulse width modulation waveform excitation.

Sensorless Control of a Fault Tolerant Multi-level Inverter PMSM Drives in Case of an Open Circuit Fault (2018)
Conference Proceeding

© 2018 IEEE. This paper introduces a fault tolerant multi-level inverter PMSM Drive that is capable to work in case of a single phase open circuit fault without degrading the system performance. Moreover, it can work in sensorless mode in case of an... Read More about Sensorless Control of a Fault Tolerant Multi-level Inverter PMSM Drives in Case of an Open Circuit Fault.

Hybrid switched-capacitor/switched-quasi-Z-source bidirectional DC-DC converter with wide-voltage-gain range for hybrid energy sources EVs (2018)
Journal Article

In this paper, a hybrid switched-capacitor/ switched-quasi-Z-source bidirectional dc-dc converter is proposed for electric vehicles (EVs) with hybrid energy sources, which has a wide voltage gain range in the bidirectional energy flows. Compared with... Read More about Hybrid switched-capacitor/switched-quasi-Z-source bidirectional DC-DC converter with wide-voltage-gain range for hybrid energy sources EVs.

An independently controlled energy storage to support short term frequency fluctuations in weak electrical grids (2018)
Journal Article

This paper proposes the use of Energy Storage (ES) to support frequency fluctuations in weak grids powered by low-power synchronous generators (SGs). Traditionally, large synchronous generators rely on high inertia and governor control to guarantee t... Read More about An independently controlled energy storage to support short term frequency fluctuations in weak electrical grids.

Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions (2018)
Journal Article

This paper proposes a novel frequency-based predictive sequence estimator that allows for the isolation of voltages and currents harmonic components needed for the control of grid-tied converters. The proposed method relays on an enhanced Sliding Goe... Read More about Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions.

An enhanced hybrid switching-frequency modulation strategy for fuel cell vehicle three-level DC-DC converters with quasi-Z source (2018)
Journal Article

For fuel cell vehicles, the fuel cell stack has a soft output characteristic whereby the output voltage drops quickly with the increasing output current. In order to interface the dynamic low voltage of the fuel cell stack with the required constant... Read More about An enhanced hybrid switching-frequency modulation strategy for fuel cell vehicle three-level DC-DC converters with quasi-Z source.

Sizing guidelines for grid-connected decentralised energy storage systems: single house application (2018)
Conference Proceeding

Nowadays, the existing hierarchical, centrally controlled power grid faces new challenges due to the increase penetration of renewable sources, the need of implementing demand side management and the 2020 and 2050 environmental targets. A promising c... Read More about Sizing guidelines for grid-connected decentralised energy storage systems: single house application.

Wide frequency range active damping of LCL-filtered grid connected converters (2018)
Conference Proceeding

It can be challenging to guarantee the stability of grids with many converters with LCL filters connected due to the presence of multiple resonances within the system. This paper presents an active damping technique to mitigate multiple resonance eff... Read More about Wide frequency range active damping of LCL-filtered grid connected converters.

Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs (2018)
Conference Proceeding

The overall performance of battery packs may be affected by imbalances between the series connected cells which is more likely in packs with high number of cells needed to provide a high voltage as needed for example in electric vehicles. In this cas... Read More about Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs.

Wide voltage-gain range asymmetric H-bridge bidirectional DC-DC converter with common ground for energy storage systems (2018)
Journal Article

A wide-voltage-conversion range bidirectional DC-DC converter is proposed in this paper. The topology is comprised of one typical LC energy storage component and the special common grounded asymmetric H-bridge with four active power switches/anti-par... Read More about Wide voltage-gain range asymmetric H-bridge bidirectional DC-DC converter with common ground for energy storage systems.

Observer-based pulsed signal injection for grid impedance estimation in three phase systems (2018)
Journal Article

This paper addresses the estimation of the grid impedance and the control of grid-tied converters by combining pulsed-signal injection and observer based techniques. A Luenberger based observer is used for controlling the grid-side current of an LCL... Read More about Observer-based pulsed signal injection for grid impedance estimation in three phase systems.

A switched-capacitor bidirectional DC-DC converter with wide voltage gain range for electric vehicles with hybrid energy sources (2018)
Journal Article

A switched-capacitor bidirectional DC-DC converter with a high step-up/step-down voltage gain is proposed for electric vehicles (EVs) with a hybrid energy source system (HESS). The converter presented has the advantages of being a simple circuit, a r... Read More about A switched-capacitor bidirectional DC-DC converter with wide voltage gain range for electric vehicles with hybrid energy sources.

Fast fault location scheme for distribution systems based on fault transients (2017)
Conference Proceeding

This paper presents a combined double-end and single-end fault locator for distribution systems. The technique lies under the impedance based category and uses the fault generated high frequency components to locate the faults. The combination of dou... Read More about Fast fault location scheme for distribution systems based on fault transients.

Per-phase controller for medium voltage full-bridge modular multilevel converters (2017)
Conference Proceeding

This work proposes a per-phase control architecture for a fullbridge modular multilevel converter (FB-MMC) intended for medium voltage applications, such as MVDC multi-terminal distribution networks in off-shore wind farms or MVDC networks in industr... Read More about Per-phase controller for medium voltage full-bridge modular multilevel converters.

Single-Switch, Wide Voltage-Gain Range, Boost DC–DC Converter for Fuel Cell Vehicles (2017)
Journal Article

In order to match voltages between the fuel cell stacks and the DC link bus of fuel cell vehicles, a single-switch Boost DC-DC converter with diode-capacitor modules is proposed in this paper. The capacitors are charged in parallel and discharged in... Read More about Single-Switch, Wide Voltage-Gain Range, Boost DC–DC Converter for Fuel Cell Vehicles.

Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions (2017)
Conference Proceeding

This paper proposes a novel frequency-based predictive sequence extractor that allows to isolate the harmonic components of both voltages and currents needed for the control of grid-tied converters. The proposed method is based on a modification of t... Read More about Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions.

Design recommendations for energy systems: a UK energy community study (2017)
Conference Proceeding

One of the key elements towards a decentralised energy sector is the consumers’ choice and participation, as the concept of energy prosumer is gaining more and more ground and energy community projects are spouting across UK. In order for the upcomin... Read More about Design recommendations for energy systems: a UK energy community study.

Adaptive power flow control for reducing peak demand and maximizing renewable energy usage (2017)
Conference Proceeding

The increase in penetration of renewable energy sources, such as solar or wind, and high peak load demand can cause grid network security issues. The incorporation of demand side management and energy storage devices can provide a solution to these p... Read More about Adaptive power flow control for reducing peak demand and maximizing renewable energy usage.