A high efficiency MHD lamp ballast with a frequency controlled synchronous rectifier

I. K. Lee; B. H. Cho

A high efficiency MHD lamp ballast with a frequency controlled synchronous rectifier

I. K. Lee^*
, B. H. Cho

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

2 Citations (Scopus)

Abstract

In this paper, in order to develop a simple and high efficient ballast without an external ignitor, a half-bridge type ballast with a coupled inductor and a frequency controlled synchronous rectifier is proposed. The internal LC resonance of the buck converter is used to generate a high voltage pulse for the ignition, and the coupled inductor filter is used for steady state ripple cancellation. Also, a synchronous buck converter is applied for the DC/DC converter stage. In order to improve the efficiency of the ballast, a frequency control method is proposed. This scheme reduces a circulation current and turn off loss of the MOSFET switch on the constant power operation, which results in increase of the efficiency of the ballast system about 4 %, compared to a fixed frequency control. It consists a 2 stage version ballast with a PFC circuit. The results are verified with hardware experiments.

Original language	English
Pages	973-977
Number of pages	5
Publication status	Published - 2004
Externally published	Yes
Event	19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004 - Anaheim, CA., United States Duration: 2004 Feb 22 → 2004 Feb 26

Other

Other	19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004
Country/Territory	United States
City	Anaheim, CA.
Period	04/2/22 → 04/2/26

Keywords

2-stage ballast
Coupled inductor
Frequency control
Synchronous rectifier

ASJC Scopus subject areas

Electrical and Electronic Engineering

Cite this

@conference{2dde89e22afe4787b7bd1b7bc4ef4ac2,

title = "A high efficiency MHD lamp ballast with a frequency controlled synchronous rectifier",

abstract = "In this paper, in order to develop a simple and high efficient ballast without an external ignitor, a half-bridge type ballast with a coupled inductor and a frequency controlled synchronous rectifier is proposed. The internal LC resonance of the buck converter is used to generate a high voltage pulse for the ignition, and the coupled inductor filter is used for steady state ripple cancellation. Also, a synchronous buck converter is applied for the DC/DC converter stage. In order to improve the efficiency of the ballast, a frequency control method is proposed. This scheme reduces a circulation current and turn off loss of the MOSFET switch on the constant power operation, which results in increase of the efficiency of the ballast system about 4 \%, compared to a fixed frequency control. It consists a 2 stage version ballast with a PFC circuit. The results are verified with hardware experiments.",

keywords = "2-stage ballast, Coupled inductor, Frequency control, Synchronous rectifier",

author = "Lee, \{I. K.\} and Cho, \{B. H.\}",

year = "2004",

language = "English",

pages = "973--977",

note = "19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004 ; Conference date: 22-02-2004 Through 26-02-2004",

}

TY - CONF

T1 - A high efficiency MHD lamp ballast with a frequency controlled synchronous rectifier

AU - Lee, I. K.

AU - Cho, B. H.

PY - 2004

Y1 - 2004

N2 - In this paper, in order to develop a simple and high efficient ballast without an external ignitor, a half-bridge type ballast with a coupled inductor and a frequency controlled synchronous rectifier is proposed. The internal LC resonance of the buck converter is used to generate a high voltage pulse for the ignition, and the coupled inductor filter is used for steady state ripple cancellation. Also, a synchronous buck converter is applied for the DC/DC converter stage. In order to improve the efficiency of the ballast, a frequency control method is proposed. This scheme reduces a circulation current and turn off loss of the MOSFET switch on the constant power operation, which results in increase of the efficiency of the ballast system about 4 %, compared to a fixed frequency control. It consists a 2 stage version ballast with a PFC circuit. The results are verified with hardware experiments.

AB - In this paper, in order to develop a simple and high efficient ballast without an external ignitor, a half-bridge type ballast with a coupled inductor and a frequency controlled synchronous rectifier is proposed. The internal LC resonance of the buck converter is used to generate a high voltage pulse for the ignition, and the coupled inductor filter is used for steady state ripple cancellation. Also, a synchronous buck converter is applied for the DC/DC converter stage. In order to improve the efficiency of the ballast, a frequency control method is proposed. This scheme reduces a circulation current and turn off loss of the MOSFET switch on the constant power operation, which results in increase of the efficiency of the ballast system about 4 %, compared to a fixed frequency control. It consists a 2 stage version ballast with a PFC circuit. The results are verified with hardware experiments.

KW - 2-stage ballast

KW - Coupled inductor

KW - Frequency control

KW - Synchronous rectifier

UR - https://www.scopus.com/pages/publications/2442595860

M3 - Paper

AN - SCOPUS:2442595860

SP - 973

EP - 977

T2 - 19th Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2004

Y2 - 22 February 2004 through 26 February 2004

ER -

A high efficiency MHD lamp ballast with a frequency controlled synchronous rectifier

Abstract

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Keywords

ASJC Scopus subject areas

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