Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Jaehong Hahn"'
Publikováno v:
IEEE Transactions on Power Electronics. 19:1256-1262
In this paper, the development of a low cost fuel cell inverter system is detailed. The approach consists of a three-terminal push-pull dc-dc converter to boost the fuel cell voltage (48V) to /spl plusmn/200 VDC. A four switch [insulated gate bipolar
Publikováno v:
IEEE Transactions on Industry Applications. 38:123-130
In this paper, a new three-phase power-factor correction (PFC) scheme is proposed using two single-phase PFC modules. In this approach, the "three" phase input is first transformed to "two" phase by means of a 0.14-pu-rated autotransformer. Two stand
Publikováno v:
IEEE Transactions on Industrial Electronics. 46:483-494
This paper proposes a robust three-phase active power-factor-correction (PFC) and harmonic reduction scheme suitable for higher power applications. The proposed system is a unique combination of a low-kilovoltampere 12-pulse rectifier system with a s
Publikováno v:
8th International Conference on Power Electronics - ECCE Asia.
Modern microprocessors are predominately powered by the Switched-Mode Power Supplies. Fast switching of the power MOSFETs causes high-frequency voltage and current oscillations in the loop formed by the input decoupling and the MOSFETs. Such oscillat
Publikováno v:
2008 Electrical Design of Advanced Packaging and Systems Symposium.
Power delivery has become a key element for the mobile platform to improve battery life and meet the energy star requirements. In this abstract, we will show innovative modeling and design techniques to improve the energy efficiency of the mobile pla
Autor:
G. Dermer, Jaehong Hahn, Donald S. Gardner, Tanay Karnik, Gerhard Schrom, Vivek De, Peter Hazucha, Siva G. Narendra, B. Bloechel
Publikováno v:
2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).
We propose an on-chip 1.8 V-to-0.9 V DC-DC converter aimed to reduce the input current and decoupling requirements of future microprocessors. By utilizing a 90-nm CMOS process, employing a four-phase hysteretic control, and operating at ultra-high fr
Autor:
Prasad Enjeti, Jaehong Hahn
Publikováno v:
Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).
In this paper, a wide input range active multipulse rectifier for utility interface of power electronic converters is proposed. The scheme combines a multi-pulse method using a Y-/spl Delta/ transformer and boost rectifier modules. A current control
Autor:
Jaehong Hahn, Sangsun Kim, M. Webster, J.W. Howze, R. Gopinath, Mark Yeary, Prasad Enjeti, J. Burghardt, D. Becker, S. Campbell
Publikováno v:
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).
In this paper, the development of a low cost fuel cell inverter system is detailed. The approach consists of a three-terminal push-pull DC-DC converter to boost the fuel cell voltage (48 V) to /spl plusmn/200 VDC. A four switch (IGBT) inverter is emp
Publikováno v:
Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.
The development of fast speed microprocessors such as DSPs (digital signal processors) makes it possible to implement high performance current control algorithms for permanent magnet synchronous motors using software. In this paper, a DSP-based high
Publikováno v:
APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).
In this paper, harmonic subtracter topologies are proposed for powering three phase diode rectifier front-end switched mode converters and power supplies. Both 12-pulse and 18-pulse subtracter configurations are discussed. The proposed 18-pulse subtr