Note that the Simulation type parameter of the Powergui is automatically changed to Discrete, with a sample time of 50e-6 usec. Open the Configuration parameters of the model and select the Fixed-step auto (Automatic solver selection) solver. The voltage magnitude is the sum of the specified forward voltage (0.8 V) and the voltage developed across the diode resistance (0.01 ohm). Zoom on the Diode3 voltage (trace 4) during the conduction period. The 3.3 degrees overlap is clearly seen on trace 3 of the scope showing currents in diodes 2 and 3. Note that most of the third harmonic which can be seen in the rectified voltage Vd (mean value 127 V) is filtered out by the smoothing reactor.Р”Р„lso observe the commutation period due to the source inductances. Note that SimulinkР’В® selected the Ode23tb solver to simulate the model.Р”Р„fter a transient period, the load current Id stabilizes at 12.7 A. Start the simulation and observe waveforms on the four-trace Scope block.

Note that the Simulation type parameter of the Powergui block is not accessible, and it is set to Continuous. The Variable-step auto (Automatic solver selection) solver is selected. Simulation with continuous integration methodР”В¬heck the simulation parameters in the Simulation -> Configuration Parameters menu. The rectified current is filtered by a 200mH inductance.Р”Вiodes are connected in parallel with RC snubbers (1000 ohms-0.1 uF) The measurement output of Diode2 and Diode3 is used to observe the diode voltage and current. Note that Simulink selected the FixedStepDiscrete solver to simulate the model.Р”В¬ompare waveforms with those obtained with the continuous integration algorithm.A 10 ohm load is fed in DC through a three-phase rectifier from an inductive source (5 mH 120 V rms).

A 10 ohm load is fed in DC through a three-phase rectifier from an inductive source (5 mH 120 V rms).

3 phase rectifier matlab simulink