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Embedded Software and Motor Control Libraries for PXR40xx

Embedded Software and Motor Control Libraries for PXR40xx

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Function GMCLIB_SvmStd_F16<br />

4.113.3 Return<br />

The function returns a 16-bit value in <strong>for</strong>mat INT, representing the actual space sector<br />

which contains the stator reference vector U s.<br />

4.113.4 Description<br />

The GMCLIB_SvmStd_F16 function <strong>for</strong> calculating duty-cycle ratios is widely-used in<br />

the modern electric drive. This, function calculates appropriate duty-cycle ratios, which<br />

are needed <strong>for</strong> generating the given stator reference voltage vector using a special Space<br />

Vector Modulation technique, termed St<strong>and</strong>ard Space Vector Modulation. The basic<br />

principle of the St<strong>and</strong>ard Space Vector Modulation Technique can be explained with the<br />

help of the power stage diagram in Figure 4-59.<br />

Figure 4-59. Power stage schematic diagram<br />

<strong>Embedded</strong> <strong>Software</strong> <strong>and</strong> <strong>Motor</strong> <strong>Control</strong> <strong>Libraries</strong> <strong>for</strong> <strong>PXR40xx</strong>, Rev. 1.0<br />

514 Freescale Semiconductor, Inc.

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