Real-Time Simulation of a 3-phase Inverter Using 3-level NPC Time Stamped Bridge TSB

This model implements a 3-level NPC inverter using Time-Stamped-Bridge (TSB) models. TSB locally interpolates the inverter output voltages allowing for a near continuous-time domain simulation accuracy of high-frequency PWM inverters.

In this model, the simulation time step equals 35 µs and the PWM carrier frequency is close to 16 kHz. Despite this, TSB output voltages and load currents are accurate because of the interpolation made by the TSB. This TSB also supports cases with no IGBT pulses, in rectifying or high-impedance modes.

References

C. Bordas, C. Dufour, O. Rudloff, "A 3-Level Neutral-Clamped Inverter Model with Natural Switching Mode Support for the Real-Time Simulation of Variable Speed Drives", Proceedings of the 8th International Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION-2009), Lille, France, July 1-3, 2009