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Real-time simulation of a 20 kHz parallel-loaded resonant converter using an IBM RISC system/6000 model 350

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2 Author(s)
Haskew, T.A. ; Dept. of Electr. Eng., Alabama Univ., Tuscaloosa, AL, USA ; Nelms, R.M.

Real-time simulation tools are useful in studying the large-signal behavior of power electronic converters in a system-level environment, and can provide a platform for the evaluation of hardware implementations of control loop designs. This paper presents an approach which allows real-time simulation of the open-Loop performance of a 20 kHz parallel-loaded resonant converter using an IBM RISC System/6000 Model 350. The state equations which describe the converter are transformed to recursive equations using finite-difference techniques. First- and second-order differencing schemes have been investigated and compared. The second-order method is superior to the first-order method because a time step of 3.5 μs executes in 3.33 μs with exceptional accuracy and negligible error propagation

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Industrial Electronics, IEEE Transactions on  (Volume:41 ,  Issue: 1 )