In a three-phase motor, the sum of three phase voltages or currents at any instant is equal to zero. Hence, it is sufficient to have only two currents or voltages to represent the motor behavior. However, the actual three-phase quantities are displaced by 120 and therefore, they are not completely decoupled. . In order to decouple the two-phases that are used to represent the motor dynamics, Clarke transformation is applied to a, b, c phases to transform them to alpha–beta vectors.
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Features and Benefits
- Core Functionality :
- Computes four key transformations for Field-Oriented Control (FOC) :
- Clarke Transformation: Converts three-phase (a, b, c) quantities to two-phase, stationary alpha–beta vectors, preserving magnitude.
- Inverse Clarke Transformation: Converts two-phase (alpha–beta) quantities back to three-phase (a, b, c) components for motor control.
- Park Transformation: Transforms time-varying alpha–beta vectors to constant d–q vectors, simplifying control by converting to a rotating reference frame.
- Inverse Park Transformation: Transforms the controlled d–q vectors back to the stator reference frame (alpha–beta).
- Computes four key transformations for Field-Oriented Control (FOC) :
- Resource Optimization :
- A single, shared math block is used for all transformations (addition, subtraction, and multiplication), which reduces the overall resource count of the IP.
Licensing Options
Encrypted RTL free with any Libero license
Documentation
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| FOC Transformations User Guide | Download |