PWM Generator (Multilevel)

Choose whether to control a Half-bridge (default) or a Full-bridge converter.

Specify the number of bridges (power modules) of the multilevel converter you want to control. The number of bridges must correspond to the number of power modules used in the modular multilevel converter. The default value is 4.

For example, if you want to control a full-bridge MMC converter that contains 22 power modules (the equivalent of 22 full-bridges), set the Bridge type parameter to Full-bridge and the Number of bridges parameter to 22. If you want to control a half-bridge MMC converter that contains 22 power modules (or 22 half-bridges), set Bridge type to Half-bridge and Number of bridges to 22.

Specify the frequency, in hertz, of the triangular carrier signals. The default value is 540.

Specify the sample time of the block. Set to 0 to implement a continuous block. Default is 0.

Select this option to show the Cr output port for the carriers’ waveforms. By default, this option is cleared.

Vectorized single-phase sinusoidal reference signal used to generate the output pulses. You specify one reference voltage for each bridge of the multilevel converter you want to control. For linear operation of this block, the magnitude of Uref must be between −1 and +1.

Vectorized gating signal to control a multilevel converter. When the Bridge type parameter is set to Half-bridge, the block outputs double the Number of bridges pulses. When the Bridge type parameter is set to Full-bridge, the block outputs four times the Number of bridges pulses.

Carriers’ waveforms. This outport only appears if you enable the Show carriers outport option.