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Bi-Directional Multi-Level Converter for an Energy Storage System
Sang-Hyup Han,Heung-Geun Kim,Honnyong Cha,Tae-Won Chun,Eui-Cheol Nho 전력전자학회 2014 JOURNAL OF POWER ELECTRONICS Vol.14 No.3
This paper proposes a 3 kW single-phase bi-directional multi-level converter for energy storage applications. The proposed topology is based on the H-bridge structure with four switches connected to the DC-link. A simple phase opposition disposition PWM method that requires only one carrier signal is also suggested. The switching sequence to balance the capacitor voltage is considered. The topology can be extended to a nine-level converter or a three-phase system. The operating principle of the proposed converter is verified through a simulation and an experiment.
Bi-Directional Multi-Level Converter for an Energy Storage System
Han, Sang-Hyup,Kim, Heung-Geun,Cha, Honnyong,Chun, Tae-Won,Nho, Eui-Cheol The Korean Institute of Power Electronics 2014 JOURNAL OF POWER ELECTRONICS Vol.14 No.3
This paper proposes a 3 kW single-phase bi-directional multi-level converter for energy storage applications. The proposed topology is based on the H-bridge structure with four switches connected to the DC-link. A simple phase opposition disposition PWM method that requires only one carrier signal is also suggested. The switching sequence to balance the capacitor voltage is considered. The topology can be extended to a nine-level converter or a three-phase system. The operating principle of the proposed converter is verified through a simulation and an experiment.
Induction Motor Control System Using Bidirectional Quasi-Z Source Inverter
Sang-hyup Han,Heung-Geun Kim,Bon-Gwan Gu,Honnyong Cha,Tae-won Chun,Eu-Chul Nho 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper describes a detailed operation analysis, proposed dc side control strategy, and implementation of the BQ-ZSI (bidirectional quasi-Z-source inverter) for electric vehicle applications. The power flow can be bidirectional by connecting an active switch antiparallel with the diode in BQ-ZSI. The performance of the inverter under load variation can be improved by inserting an inner current control loop of the inductor in the QZSN side controller. Thus, a dedicated voltage controller with inductor current controller is designed to reject the disturbance and stabilize the dc-link voltage during a nonshoot through state. A 5-kW prototype has been built. Both simulation and experimental results are presented to verify the validity of the circuit and the effectiveness of the proposed control strategy.
한상협(Han Sang Hyup),조택현(Teak-Hyun Jo),박종형(Park Jong Hyung),김흥근(Heung-Geun Kim),전태원(Tae-Won Chun),노의철(Eui-Cheol Nho) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.11
본 논문은 LCL필터를 이용한 분산전원용 계통연계형 PCS의 전류제어기를 비교 분석하였다.주요 비교대상은 PI(Proporional-intergral)제어기, PR(Proportional-Resonant), 제어기, DeadBeat (DB)제어기 등의 선형 제어기 이며, 각 제어기의 과도상태 응답특성과 정상상태 응답특성을 시뮬레이션으로 비교하였다. 또한 DSP의 특성에 의한 1 주기 지연, 리액턴스와 저항 변화 등에 강인한 DB제어기 관하여 논의 하겠다.