An isolated topology for reactive power compensation with a modularized Dynamic-Current building-block

This paper presents a novel topology for instantaneous reactive power compensation. The topology is derived from Dynamic-Current or Dyna-C, which is a patented power converter capable of transferring energy for two- or multi-terminal DC, single- and/or multi-phase AC systems. The proposed topology has a modularized low-voltage current source building block that can be stacked for medium-voltage (MV) applications to provide dynamic leading or lagging reactive power. In addition, the phases are coupled through a high-frequency transformer for inter-phase fault isolation among the three-phase. The converter functionality is validated through simulations and experimental results with a 480 V, 75 kVAr prototype.

[1]  Alan J. Watson,et al.  Fault Detection for Modular Multilevel Converters Based on Sliding Mode Observer , 2013, IEEE Transactions on Power Electronics.

[2]  Fujio Ishiguro,et al.  Development of a large static VAr generator using self-commutated inverters for improving power system stability , 1991 .

[3]  R.W. De Doncker,et al.  Comparison of Hard-Switched Multi-Level Inverter Topologies for STATCOM by Loss-Implemented Simulation and Cost Estimation , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[4]  Hao Chen,et al.  Stacked modular isolated dynamic current source converters for medium voltage applications , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[5]  Laszlo Gyugyi,et al.  Characteristics of Static, Thyristor-Controlled Shunt Compensators for Power Transmission System Applications , 1980, IEEE Transactions on Power Apparatus and Systems.

[6]  Dushan Boroyevich,et al.  Charge control of three-phase buck PWM rectifiers , 2000, APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).

[7]  Laszlo Gyugyi.  Reactive Power Generation and Control by Thyristor Circuits , 1979 .

[8]  Y. Sumi,et al.  New Static Var Control Using Force-Commutated Inverters , 1981, IEEE Transactions on Power Apparatus and Systems.

[9]  N.G. Hingorani,et al.  High Power Electronics and flexible AC Transmission System , 1988, IEEE Power Engineering Review.

[10]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.

[11]  K. Ilves,et al.  Steady-State Analysis of Interaction Between Harmonic Components of Arm and Line Quantities of Modular Multilevel Converters , 2012, IEEE Transactions on Power Electronics.

[12]  J. Dixon,et al.  Reactive Power Compensation Technologies: State-of-the-Art Review , 2005, Proceedings of the IEEE.

[13]  Gyu-Hyeong Cho,et al.  Modeling and analysis of a static VAR compensator using multilevel voltage source inverter , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[14]  Hao Chen,et al.  Dyna-C: A topology for a bi-directional solid-state transformer , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.