C2000 Clarke Transformation
Convert balanced three-phase quantities to balanced two-phase quadrature quantities
Description
Replace the existing DMC blocks with MCB blocks for improved usability and future compatibility. It is recommended that you use blocks from Control Algorithm Design (Motor Control Blockset). While these blocks are not one-to-one replacements, they enable you to achieve the same functionality.
| C28x DMC lib | C28x DMC lib equivalent in MCB |
|---|---|
| C2000 Clarke Transformation | Clarke Transform (Motor Control Blockset) |
| C2000 Inverse Park Transformation | Inverse Park Transform (Motor Control Blockset) |
| C2000 Park Transformation | Park Transform (Motor Control Blockset) |
| C2000 PID Controller | PI Controller (Motor Control Blockset) |
| C2000 Ramp Control | Position Generator (Motor Control Blockset) |
| C2000 Ramp Generator | Position Generator (Motor Control Blockset) |
| C2000 Space Vector Generator | PWM Reference Generator (Motor Control Blockset) |
| C2000 Speed Measurement | Speed Measurement (Motor Control Blockset) |
This block converts balanced three-phase quantities into balanced two-phase quadrature quantities. The transformation implements these equations
and is illustrated in the following figure.
The inputs to this block are the phase a (As) and phase b
(Bs) components of the balanced three-phase quantities and the outputs
are the direct axis (Alpha) component and the quadrature axis
(Beta) of the transformed signal.
The instantaneous outputs are defined by the following equations and are shown in the following figure:
The variables used in the preceding equations and figures correspond to the variables on the block as shown in the following table:
| Equation Variables | Block Variables | |
|---|---|---|
| Inputs | ia | As |
| ib | Bs | |
| Outputs | id | Alpha |
| iq | Beta |
Note
To generate optimized code from this block, enable the
TI C28xorTI C28x (ISO)CRL.The implementation of this block does not call the corresponding Texas Instruments® library function during code generation. The TI function uses a global Q setting and the MathWorks® code used by this block dynamically adjusts the Q format based on the block input. See Using the IQmath Library for more information.
References
For detailed information on the DMC library, see C/F 28xx Digital Motor Control Library, Literature Number SPRC080, available at the Texas Instruments Web site.
