Parallel analysis method for a power electronic system by circuit partitioning

This paper proposes a new parallel circuit simulation method which divides the whole circuit into subcircuits by applying an explicit integration formula to selected energy storage elements such as inductors and/or capacitors. Specifically, the forward Euler (FE) formula is applied to selected series inductors and parallel capacitors. Then an implicit formula such as the backward Euler (BE) formula is applied for stable numerical integration, and the optimum step size is selected for each subcircuit. This paper describes first the principle of the proposed method, then the processes by which it is applied. Then it describes a parallel method which utilizes thread processing techniques based on OpenMP application program interfaces with multicore CPU and shared-memory system to reduce its processing time. As application examples, this paper includes analysis of an AC-DC converter, and a series-connected circuit of a three-phase converter and a modified hysteresis controlled PWM single-phase and three-phase inverters. Its efficiency is proven by the effect of reducing circuit sizes and parallel processing.

[1]  George C. Verghese,et al.  Modeling and simulation of power electronic converters , 2001, Proc. IEEE.

[2]  Predrag Pejovic,et al.  A new algorithm for simulation of power electronic systems using piecewise-linear device models , 1995 .

[3]  T. Kato,et al.  Modified hysteresis control with minor loops for single-phase full-bridge inverters , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[4]  Yasunari Kanda,et al.  Multirate Analysis Method of a Power Electronic Converter by Circuit Partitioning , 2006 .

[5]  Mariesa L. Crow,et al.  The multirate method for simulation of power system dynamics , 1994 .

[6]  Shu Yuen Ron Hui,et al.  Decoupled simulation of DC-linked power electronic systems using transmission-line links , 1994 .

[7]  Henry Shu-Hung Chung,et al.  Decoupled technique for the simulation of PWM switching regulators using second-order-output extrapolations , 1998 .

[8]  R. Brayton,et al.  A new efficient algorithm for solving differential-algebraic systems using implicit backward differentiation formulas , 1972 .

[9]  P.L. Chapman,et al.  Multi-resolution switched system modeling , 2004, 2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings..

[10]  B. Sheng,et al.  Parallel switched circuit simulation on networked workstations , 1992, [Proceedings] 1992 IEEE Workshop on Computers in Power Electronics.

[11]  Eric Walters,et al.  An efficient multirate Simulation technique for power-electronic-based systems , 2004 .

[12]  K. K. Fung,et al.  Fast decoupled simulation of large power electronic systems using new two-port companion link models , 1997 .

[13]  Huang Wu,et al.  Efficient simulation of switched networks using reduced unification matrix , 1999 .

[14]  Henry Shu-Hung Chung,et al.  Fast computer-aided simulation of switching power regulators based on progressive analysis of the switches' state , 1994 .

[15]  Shu Yuen Ron Hui,et al.  Fast simulation of multistage power electronic systems with widely separated operating frequencies , 1996 .

[16]  Albert E. Ruehli,et al.  The modified nodal approach to network analysis , 1975 .

[17]  O. Wasynczuk,et al.  An efficient multirate Simulation technique for power-electronic-based systems , 2004, IEEE Transactions on Power Systems.

[18]  Y.-T. Hsiao,et al.  A fast-decoupled method for time-domain simulation of power converters , 1988, PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.

[19]  Toshiji Kato,et al.  Computer-aided analysis of a power electronic circuit by a new multirate method , 1998, PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196).

[20]  C. W. Gear,et al.  Multirate linear multistep methods , 1984 .