Zobrazeno 1 - 10
of 511
pro vyhledávání: '"Myung-Joong Youn"'
Publikováno v:
IEEE Transactions on Industrial Electronics. 61:1235-1242
This paper proposes an on/off control of boost power factor correction (PFC) converters to improve the light-load efficiency in paralleled power supply units (PSUs) for servers. The proposed scheme operates the PFC stages of two paralleled PSUs alter
Autor:
Gun-Woo Moon, Ki-Bum Park, Jae-Bum Lee, Hyun-Wook Seong, Myung-Joong Youn, Hyoung-Suk Kim, Je-Hyung Cho
Publikováno v:
IEEE Transactions on Industrial Electronics. 60:5558-5574
Paralleled power systems require a hot swap which indicates the replacement of a converter module without shutting down the whole system for easy maintenance, repair, and upgrade. A practical issue for the hot swap is an overcurrent toward a newly ac
Publikováno v:
IEEE Transactions on Power Electronics. 28:2514-2526
In this paper, a simple and low-cost open-circuit fault detection and identification method for a pulse-width modulated (PWM) voltage-source inverter (VSI) employing a permanent magnet synchronous motor is proposed. An open-circuit fault of a power s
Publikováno v:
IEEE Transactions on Power Electronics. 27:2684-2689
The LLC resonant converter employing a center-tap rectifier can suffer from a high voltage oscillation across rectifier diodes owing to a leakage inductance of a transformer secondary. The amplitude of this voltage oscillation is varied according to
Publikováno v:
IEEE Transactions on Power Electronics. 27:2900-2911
In this paper, a new cell-to-cell charge equalization converter using a multiwinding transformer is proposed. The proposed scheme achieves the direct cell-to-cell charge transportation by buck-boost and flyback operation. In this operation, the adjac
Publikováno v:
IEEE Transactions on Power Electronics. 27:2585-2594
This paper proposes a simple position observer based on the instantaneous power and a tuning procedure for the proposed observer in driving the surface-mounted permanent magnet synchronous motor. In the instantaneous power of a three-phase system, th
Publikováno v:
IEEE Transactions on Power Electronics. 27:1974-1984
Stacking an auxiliary step-up circuit on top of a boost converter is one of the most attractive structures for nonisolated high step-up applications. In this paper, in order to avoid the large input current ripple of coupled-inductor-based circuits,
Publikováno v:
IEEE Transactions on Power Electronics. 27:1383-1400
This paper describes nonisolated high step-up DC-DC converters using zero voltage switching (ZVS) boost integration technique (BIT) and their light-load frequency modulation (LLFM) control. The proposed ZVS BIT integrates a bidirectional boost conver
Publikováno v:
IEEE Transactions on Power Electronics. 27:331-341
A transformer magnetizing current offset for a phase-shift full-bridge (PSFB) converter is dealt with in this paper. A model of this current offset is derived and it is presented as a first-order system having a pole at a low frequency when the effec
Publikováno v:
IEEE Transactions on Power Electronics. 26:3242-3253
A new interleaved forward (IF) converter, adopting the series-input series-rectifier (SISR) structure with a common transformer reset circuit (CTRC), is proposed in this paper. The series-input structure distributes the switch voltage stress so that