AN1947 datasheet(21/36 Pages) STMICROELECTRONICS

Part #	AN1947

Description	ST7MC PMAC SINE WAVE MOTOR CONTROL SOFTWARE LIBRARY

PDF	36 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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ST7MC PMAC SINE WAVE MOTOR CONTROL SOFTWARE LIBRARY

Figure 10. Phase Angle versus frequency curve

#define PHI_MIN

(u8) 140

#define PHI_MAX

(u8) 160

#define PHI_LOWFREQ

(u16) 500// 50 Hz

#define PHI_HIGHFREQ (u16) 2500// 250 Hz

– PHASE_ANGLE_RV3: This define configures the Phase angle to be set using RV3 potenti-

ometer.

#define PHASE_ANGLE_RV3 /* If defined the Phase angle is read by RV3 */

– V_MAX, V_MIN, VF_LOWFREQ_LIMIT, VF_HIGHFREQ_LIMIT: These defines set the V/F

curve. See Figure 11. V/F curve definition. The V/F curve is used to limit the maximum stator

voltage applied to the value below that curve. This curve fixes a maximum stator voltage val-

ue in relation to the actual stator frequency.

PHI_MIN

PHI_MAX

PHI_LOWFREQ

PHI_HIGHFREQ

Phase Angle

Frequency

AN1947 Datasheet(PDF) 21 Page - STMicroelectronics