The Three-phase Pulse Width Modulation (PWM) generates carrier-based, center-aligned PWM to trigger the switches of a three-phase inverter. The module also introduces a configurable dead time to avoid dead short circuits. A delay time can be introduced to synchronize multiple three-phase PWM block instantiations for multi-axis or for harmonic cancellation in the case of multi-level inverters.
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Features and Benefits
- Signal Generation :
- Generates three-phase, carrier-based, center-aligned Pulse Width Modulation (PWM) signals.
- The signals are based on three independent reference inputs.
- Safety and Synchronization:
- Dead Time: Introduces a configurable dead time to prevent dead short circuits in the inverter bridge by ensuring one transistor turns off before the other turns on.
- Delay Time: Allows a delay to be introduced to synchronize multiple 3-phase PWM blocks for multi-axis systems or for harmonic cancellation in multi-level inverters.
- Control and Output:
- An enable/disable signal allows for the PWM output signals to be shut down within a single system clock cycle.
- Generates timing pulses for other blocks, with a configurable option of one or two pulses per PWM period.
Licensing Options
Encrypted RTL free with any Libero license
Documentation
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| Three-Phase PWM User Guide | Download |