Modeling of Single-Phase Three-Level Power Factor Correction Converter and Design of Double-Loop Controller-Authors Jun-Hyeok Han ; Il-Song Kim

 The Transactions of the Korean Institute of Power Electronics, Vol. 29, No. 4, August 2024 

Modeling of Single-Phase Three-Level Power Factor Correction Converter and Design of Double-Loop Controller- 단상 3-레벨 역률보상 컨버터의 개선된 모델링 및 더블 루프 제어기 설계 

 Abstract 

 This paper presents the improved modeling of single-phase three-level power factor correction (PFC) converters and the design techniques of double-loop controllers. Conventional single-phase PFC circuits cannot easily be used to design double-loop controllers, due to the 120[Hz] ripple at the output voltage. A paper applying dq transform to a single-phase PFC circuit or research on controller design has been published, but research results on the double-loop controller design have not been clearly presented. The PFC converter having a three-level topology has the advantages of high efficiency and wide control range compared with conventional single-level PFC converters, but designing the double-loop controller is not easy due to the complexity of the control technique. In this paper, we present the research results of applying the single-phase PFC dual-loop controller design technique with 120[Hz] voltage ripple to a three-level topology. A state-space expression applicable to the full duty range was constructed to obtain a transfer function and a double-loop controller design was performed using MATLAB SISOTOOL. The designed controller demonstrated the validity of the design through PSIM simulation, and the designed controller is manufactured and experimented to verify the effectiveness of the system design.

VIEW FULL PAPER: http://journal.auric.kr/tkpe/ArticleDetail/RD_R/431277

인덕터 집적 평면 변압기의 누설 인덕턴스 계산 강정철1, 정세교✝ Leakage Inductance Calculation of Inductor Integrated Planar Transformer Jung-Cheol Kang1 and Se-Kyo Chung✝

 The Transactions of the Korean Institute of Power Electronics, Vol. 29, No. 6, December 2024 인덕터 집적 평면 변압기의 누설 인덕턴스 계산 강정철1, 정세교✝ Leakage Inductance Calculation of Inductor Integrated Planar Transformer Jung-Cheol Kang1 and Se-Kyo Chung✝

Abstract The design and fabrication of magnetic components is one of the most important issues in realizing high-density switching power converters. An integrated magnetics (IM) technique has been used to reduce the size and cost of the magnetic components. In this technique, a leakage inductance can be used as a series inductor connected to the transformer for applications using resonant techniques, such as LLC resonant converter and other zero-voltage switching converters. The calculation of the leakage inductance is required to accurately control the value of the inductance in designing an IM device. This paper describes the calculation of the leakage inductance for the inductor integrated planar transformer used for the high-density LLC resonant converter. The leakage fluxes through the leakage layer is first considered to calculate the biggest part of the leakage inductance. The windings and insulators are also considered to improve calculation accuracy under the uneven number of windings for the PCB layer. Leakage inductance is calculated using magnetic energy equation and equivalent magnetic circuit. Experimental results are provided to verify the effectiveness of the proposed calculation method. 

VIEW FUL PAPER: http://journal.auric.kr/tkpe/ArticleDetail/RD_R/434290

배터리 충전 및 방전기용 DAB 컨버터를 위한 제어기 설계 Controller Design of a DAB Converter for Battery Charging and Discharging Applications

 

Research article The Transactions of the Korean Institute of Electrical Engineers KIEE Vol. 74, No. 04, p.594-604 ISSN (print) :1975-8359 ISSN (online) :2287-4364

 Received :26 Dec. 2024Revised :20 Feb. 2025Accepted :28 Feb. 2025 DOI :https://doi.org/10.5370/KIEE.2025.74.4.594 

배터리 충전 및 방전기용 DAB 컨버터를 위한 제어기 설계 Controller Design of a DAB Converter for Battery Charging and Discharging Applications 박성현 (Sunghyeon Park) 1iD 김인동 (In-Dong Kim) †iD (Dept. of Electrical Engineering, Pukyong National University, Republic of Korea.) †Corresponding Author : Dept. of Electrical Engineering, Pukyong National University, Republic of Korea. E-mail : idkim@pknu.ac.kr

Abstract 

Recently, as the demand for DC systems has rapidly increased, research on battery chargers has been conducted extensively. Among DC/DC converters, the DAB converter has the advantage of enabling ZVS(Zero Voltage Switching) operation and securing bidirectional power transmission and insulation by using a transformer in a left-right symmetrical structure. Since bidirectional operation is possible, it is widely used in DC grid systems and battery chargers. This paper proposes a switching method that integrates three switching methods, TPS, EPS, and SPS, for efficient converter operation in a wide load range. In addition, a controller that smoothly operates CC-CV (Constant Current Constant Voltage) mode conversion and has self-protection operation is ? proposed, and the operating characteristics are verified through simulation and experiments using the fabricated DAB converter.

VIEW FULL PAPER: http://journal.auric.kr/kiee/XmlViewer/f435973

PCIM Asia 2024 NE takes you to the virtual exhibition Infineon booth

 

PCIM Asia 2024 NE takes you to the online exhibition Jiaocheng Ultrasound Booth-【NE云逛展】PCIM Asia 2024 NE带您云逛展 骄成超声展台