Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Won-Sang Im"'
Publikováno v:
IEEE Transactions on Industrial Informatics. 14:4940-4952
With increasing interest in smart grid and renewable energy, significant investments have been allocated to promote related studies. Since there is a wide spectrum of topics to study, it is necessary to have an advanced experimental platform that can
Publikováno v:
IEEE/CAA Journal of Automatica Sinica. 4:512-519
The large inertia of a traditional power system slows down system U+02BC s frequency response but also allows decent time for controlling the system. Since an autonomous renewable microgrid usually has much smaller inertia, the control system must be
Publikováno v:
IEEE Transactions on Power Systems. 31:5181-5189
To isolate the negative impacts of pulsed power loads (PPL) in a shipboard power system (SPS), energy storage systems (ESS) are usually equipped for online ESS charging and offline ESS discharging for PPL deployment. In order to achieve fast and smoo
Publikováno v:
IET Generation, Transmission & Distribution. 10:2739-2747
Since a pulsed power load (PPL) consumes a huge amount of energy within very short period of time, its deployment might cause large disturbances even instability to a power system that has limited generation, small inertia, and small ramp rate. To mi
Publikováno v:
Journal of Power Electronics. 16:1190-1199
This study proposes a classification and compensation algorithm of two non-ideal output signals of a resolver to reduce position errors. Practically, a resolver generates position errors because of amplitude imbalance and quadrature imperfection betw
Publikováno v:
Journal of Power Electronics. 15:1593-1600
This paper proposes a novel compensation algorithm of current offset error for single-phase linear compressor in home appliances. In a half-bridge inverter, current offset error may cause unbalanced DC-link voltage when the DC-link is comprised of tw
Publikováno v:
The Transactions of the Korean Institute of Power Electronics. 19:376-382
This paper proposes the pulse width modulation (PWM) control strategy for low-speed operation in the three-level neutral-point-clamped (NPC) inverters based on the bootstrap gate drive circuit. As a purpose of the cost reduction, several papers have
Publikováno v:
Journal of Electrical Engineering and Technology. 9:532-540
It is necessary to measure the current of rotor for controlling the active and reactive power generated by the stator side of the doubly fed induction generator (DFIG) system. There are offset and scaling errors in the current measurement. The offset
Publikováno v:
IEEE Transactions on Power Electronics. :1-1
This paper proposes a pulsewidth modulation (PWM) control strategy for the efficient operation of the three-phase three-level neutral-point-clamped (NPC) inverters based on a bootstrap gate drive circuit. The bootstrap circuit used in the three-level
Publikováno v:
IEEE Transactions on Industry Applications. 49:1539-1547
There is the possibility of an open-switch fault in a three-phase ac-dc pulsewidth-modulation (PWM) converter due to problems with the switching devices. In this case, the converter causes unbalanced input ac currents including increased harmonics an