Young-Min Park

Publications (2)0 Total impact

• Conference Proceeding: Unbalanced three-phase control using offset-voltage for H-bridge multilevel inverter with faulty power cells

  Young-Min Park, Han-Seoung Lyoo, Hyun-Won Lee, Myung-Gil Jung, Se-Hyun Lee, Ji-Yoon Yoo
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  ABSTRACT: In this paper, unbalanced three-phase control method is proposed to increase the fault tolerance for H-bridge multilevel inverter under the conditions of faulty power cells. It is possible to generate a balanced three-phase line-to-line voltage by phase-shifting and bypassing faulty power cells with a minimum voltage drop. In this method, the concept of voltage modulation by using offset voltage is applied to an unbalanced three-phase control method. Especially, it is possible to use the maximum output voltage of inverter by adopting the real time unbalanced control method of phase voltage irrespective of the fault location and the number of disabled power cells. Also, the feasibility of the proposed method is proved by the H-bridge multilevel inverter test composed of 7-level.
  Power Electronics Specialists Conference, 2008. PESC 2008. IEEE; 07/2008
• Conference Proceeding: A Simple and Reliable PWM Synchronization & Phase-Shift Method for Cascaded H-Bridge Multilevel Inverters based on a Standard Serial Communication Protocol

  Young-Min Park, Han-Seong Yoo, Hyun-Won Lee, Myung-Gil Jung, Se-Hyun Lee, Choong-Dong Lee, Sang-Bin Lee, Ji-Yoon Yoo
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  ABSTRACT: The use of the CAN communication protocol for H-bridge multi-level (HBML) inverters, and localized PWM generation and AVR is proposed in this paper. It is shown that the performance and reliability of conventional distributed controllers for HBML inverters can be improved with less communication hardware requirements, when using the proposed method. It is also shown that the expansion and modularization capability of the HBML inverter is improved since individual inverter modules operate more independently. The proposed hardware is described in detail and the validity of the proposed system is verified experimentally on a 6,600(V) 1,400(kW) induction motor drive
  Industry Applications Conference, 2006. 41st IAS Annual Meeting. Conference Record of the 2006 IEEE; 11/2006