Search
Now showing items 31-40 of 167
A design example of an 8-pole radial AMB for flywheel energy storage
(
IEEE
, 2012 , Conference Paper)
High speed flywheel energy storage systems normally use magnetic bearings to reduce friction loss. Bearing load consists of radial forces with or without axial forces according to drive configuration and requirements. The ...
On the development of flywheel storage systems for power system applications: A survey
(
IEEE
, 2012 , Conference Paper)
Energy storage systems cannot be considered energy sources but having the ability of storing and discharging energy. They have a vital rule in the reliability and power quality of power systems. There are several energy ...
An Optimal PWM Technique for Dual-Output Nine-Switch Boost Inverters with Minimum Passive Component Count
(
Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
Nine-Switch inverter (NSI) has been recently introduced for independent control of dual ac motors. Although this topology reduces the number of active switches by 25% compared to conventional inverters, it has a main ...
Performance of a five-phase boost inverter-fed submersible induction machine
(2013 , Conference Paper)
An electrical submersible pump (ESP) motor is preferably fed from a low voltage variable-frequency drive (VFD) followed by a step-up transformer. The motor and drive connection through a long feeder usually causes over ...
HVDC shunt tap based on series-input parallel-output DC-AC multi-module VSCs with DC voltages balancing
(
Institution of Engineering and Technology
, 2014 , Conference Paper)
Conventionally, tapping-off a small amount of power from an HVDC transmission line to a three-phase local network can be achieved using a DC-to-AC voltage source converter (VSC) followed by a step down transformer. In order ...
Medium voltage flywheel energy storage system employing dual three-phase induction machine with machine-side series-connected converters
(
Institution of Engineering and Technology
, 2014 , Conference Paper)
Flywheels as energy storage systems are good candidates for numerous power system applications such as voltage support, serving fluctuating loads, frequency regulation and renewable energy utilization. Most of these ...
Torque ripple reduction of radial magnetic gearbox using axial pole pairing
(
Institution of Engineering and Technology
, 2014 , Conference Paper)
Magnetic gearbox (MGB) is a contactless magnet-based transmission system that transmits mechanical power between two shafts. MGBs offer significant advantages over mechanical gears such as contactless power transfer, high ...
Traction system with on-board inductive power transfer
(
Institution of Engineering and Technology
, 2014 , Conference Paper)
In traction applications based on long primary and short secondary type, contactless electrical energy transmission can offer distinct advantages over the conventional energy transmission based on catenary system to provide ...
A Family of Discontinuous PWM Strategies for Quasi Z-Source Nine-Switch Inverters
(
Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
This paper proposes a new family of discontinuous PWM strategies to control the quasi-Z-source nine-switch inverters (qZS-NSI). The presented strategies provide buck and boost inversion capabilities, and suitable for ...
A Six-Arm Symmetrical Six-Phase Hybrid Modular Multilevel Converter with Unidirectional Current Full-Bridge Submodules
(
Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
Multiphase converter complexity is one of the concerns that restrict the widespread utilization of multiphase machines. One of the developmental trends to alleviate the converter complexity is reducing passive and active ...