Hello! I am currently building a PLECS model of a single-phase cascaded H-bridge rectifier for hardware-in-the-loop simulation on the RTbox3.The controller part, as shown in Figure 1, is loaded into the DSP controller connected to the RTbox3. The main circuit part is shown in Figure 2.
Figure 1
Figure 2
Therefore, how should I construct the SPWM output in the controller part to achieve phase-shifted carrier control for a four-stage single-phase cascaded H-bridge rectifier?
Which TI MCU are you using? Have you encountered any specific issues or feel like you’re not seeing the expected results?
Constructing phase shifted PWM is quite straightforward, for example with a fixed 90 degree shift between phases and 0.25 duty cycle is configured as below and produces the expected PWM outputs.
simple_phase_shift_pwm.plecs (19.4 KB)
I am using the TI F28069 MCU chip. When performing simulation with the RTbox3, an error as shown in the figure below occurred:his target(2806x) requires that the channels of a synchronized PWM block be consecutive and constrained to one synchronization group (in this case 1 … 3)
Thank you for your guidance and support! I was on a business trip some time ago and have only recently been able to resume our discussion.I am using the TI F28069 MCU chip. When performing simulation with the RTbox3, an error as shown in the figure below occurred.
