AN1931D Freescale Semiconductor / Motorola, AN1931D Datasheet - Page 38

• Manufacturer Part Number: AN1931D
• Description: 3-Phase PM Synchronous Motor Vector Control
• Manufacturer: Freescale Semiconductor / Motorola

Software Design
6.2.5.1 Current Control Process
38
omega_actual_mech
coefBEMF, coefBEMFShift
theta_align_el_C
reloadSWtmrAlignment
The data flow inside the process Current Control is detailed in
currents i_Sabc_comp are transformed into i_SDQ_lin using sinCos_theta_el; see
d and q components are regulated by independent PI regulators to i_SDQ_desired values. The outputs
of the regulators are u_SDQ_lin.
Transformation
theta_actual_el
Sin, Cos
SVM_INV_INDEX,
i_Sabc_comp
u_OverMax
sinCos_theta_el
omega_desired_mech
omega_required_mech
Freescale Semiconductor, Inc.
i_SDQ_desired
3-Phase PM Synchronous Motor Vector Control
Speed Ramp
Speed, Align
Figure 6-6. Data Flow - PMSM Control
For More Information On This Product,
I_SDQ_MAX_F16
q_axis
Control
Control
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Current
Control
i_SDQ_desired
d_axis
reloadSWtmrSpeedControl
i_Sd_Alignment
PIRegParams_omega_mech.
PositivePILimit
pwmABC
pmsmCtrlStatus
I_SDQ_MAX
u_SDQ
svmSector
Figure
Field-Weakening
6-7. The measured phase
u_dc_bus_filt
SVM_INV_INDEX,
u_Reserve_FW
u_S_max_FWLimit
Section
MOTOROLA
3.3.3. Both