. Electric Energy Conversion Technology
- Electrical , Mechanical, and Thermal Energy Conversion with Electronics
- Energy Efficiency, Cost Reduction, Performance, and Optimization
. Application Fields
- Home, Factory, Vehicle, Building, Power Generation, and so on.
. Technology Scopes
- Energy System Planning Control
- Energy Conversion Machine Design and Analysis
- Measurements and Conversion Circuits
- Conversion Control
- Energy Network and Smart Grid End Use Technology
. Collaborative Works with Other Fields
- In Electrical Engineering, Machine Design, Power System, Control, Computing, and Semiconductor
- In Engineering and Science, Mechanical Engineering - Mechanism, Dynamics, Heat, and Manufacturing
: Material Science - Model, Design, Process
Research Interests & Projects
▶ 최근 관심분야
- Small-sized Power Systems : Capacitorless inverter, dual motor drive
- Renewable Energy Conversion Systems
- Motor Control : Sensorless control, Dual inverter topology for EV/HEV
- Integrated Machine
▶ 주요 연구과제
- 전해캡이 없는 전동기 구동 시스템 : LG 전자
- Multi-string 태양광 발전 시스템 : LS 산전
- Dual motor drive, integrated machine : 삼성전자
- 센서리스 전동기 제어 : LG 전자, 삼성 태크윈
- 전기자동차 용 인버터 시스템 및 제어 기술 개발 : 만도
Journals & Patents
- Y. Lee and J.-I. Ha, “Control method for mono inverter dual parallel surface mounted permanent magnet synchronous machine drive system,” IEEE Trans. Ind. Electron., [Online], DOI: 10.1109/TIE.2015.2420634.
- S. Jung and J.-I. Ha, “Analog filtering method for sensorless AC machine control with carrier-frequency signal injection,” IEEE Trans. Ind. Electron., vol. 62, no. 9, pp. 5348–5358, Sep. 2015.
- Y. Son and J.-I. Ha, “Direct power control of a three-phase inverter for grid input current shaping of a single-phase diode rectifier with a small DC-link capacitor,” IEEE Trans. Power Electron., vol. 30, no. 7, pp. 3794–3803, Jul. 2015.
- K. Lee, Y. Han, and J.-I. Ha, “Wound rotor machine with single-phase stator and three-phase rotor windings controlled by isolated three-phase inverter,” IEEE Trans. Energy Convers., vol. 30, no. 2, pp. 558–568, Jun. 2015.
- Y. Lee and J.-I. Ha, “Hybrid modulation of dual inverter for open-end permanent magnet synchronous motor,” IEEE Trans. Power Electron., vol. 30, no. 6, pp. 3286–3299, Jun. 2015.
- W.-J. Lee, Y. Son, and J.-I. Ha, “Single-phase active power filtering method using diode-rectifier-fed motor drive,” IEEE Trans. Ind. Appl., vol. 51, no. 3, pp. 2227–2236, May/Jun. 2015.
- Y. Han and J.-I. Ha, “Wound rotor machine fed by a single-phase grid and controlled by an isolated inverter,” IEEE Trans. Power Electron., vol. 29, no. 9, pp. 4843–4854, Sep. 2014.
- H. Shin and J.-I. Ha, “Phase current reconstructions from DC link currents in three-phase three-level PWM inverters,” IEEE Trans. Power Electron., vol. 29, no. 2, pp. 582–593, Feb. 2014.
- Y. Han, S. Kim, J.-I. Ha, and W.-J. Lee, “A doubly fed induction generator controlled in single-sided grid connection for wind turbines,” IEEE Trans. Energy Convers., vol. 28, no. 2, pp. 413–424, Jun. 2013.
- J.-W. Shin, H. Shin, G.-S. Seo, J.-I. Ha, and B.-H. Cho, “Low-common mode voltage h-bridge converter with additional switch legs,” IEEE Trans. Power Electron., vol. 28, no. 4, Apr. 2013.
 Method to predict phase current, Publication No. US 8362759 B2, Jan. 29, 2013.
 Method and device to generate position profile in motion controller, Publication No. US 8024061 B2, Sep. 20, 2011.
 Electric power conversion apparatus, Publication No. US 20150078049 A1, Sep. 15, 2014.
 Double wound rotor type motor with constant alternating current or direct current power supply input and control method thereof, Publication No. WO 2013/165100 Al, Apr. 5, 2013.