DSP电机控制中的感应电机控制程序

Outputs
ACI parameter
*
GLOBAL_Q valued between 1 and 30 is defined in the IQmathLib.h header file.
Special Constants and Data types ACI The module definition is created as a data type. This makes it convenient to instance an interface to the 3-phase Induction Motor module. To create multiple instances of the module simply declare variables of type ACI. ACI_handle User defined Data type of pointer to ACI module ACI_DEFAULTS Structure symbolic constant to initialize ACI module. This provides the initial values to the terminal variables as well as method pointers.
ACI
Description
Emulated (per-unit) 3-phase Induction Motor
This module implements a discrete equivalent of a 3 -phase induction motor using trapezoidal approximation with predictor-corrector. The induction model is normalized by the adjustable base quantities of voltage, current, torque, frequency, and flux linkage. The induction motor is modeled in the stationary reference frame. The outputs of this module are the stator currents, rotor flux linkages, electromagnetic torque, electrically angular velocity, and actual rotor speed in rpm. All of these outputs are in per-unit except the actual rotor speed.
Format*
GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q Q0 GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q GLOBAL_Q Q0
Module Properties
Type: Target Independent, Application Dependent Target Devices: x28x C Version File Names: aci.c, aci.h IQmath library files for C: IQmathLib.h, IQmath.lib
Description
alfa-axis phase voltage beta-axis phase voltage load torque alfa-axis phase current beta-axis phase current alfa-axis rotor flux beta-axis rotor flux electromagnetic torque electrically angular velocity motor speed in rpm constant using in rotor flux cal constant using in rotor flux cal constant using in rotor flux cal constant using in stator current cal constant using in stator current cal constant using in stator current cal constant using in stator current cal constant using in torque cal constant using in rotor speed cal constant using in rotor speed cal base speed in rpm
Methods void aci_calc(ACI_handle); This definition implements one method viz., the Induction Motor computation function. The input argument to this function is the module handle. Module Usage Instantiation The following example instances two ACI objects ACI aci1, aci2;
2
C Interface
Module Terminal Variables/Functions
Item Inputs Name
ualfa ubeta load_torque ialfa ibeta psi_r_alfa psi_r_beta torque wr wr_rpm K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 base_rpm
Range(Hex)
80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF
3
C Interface
Initialization To Instance pre-initialized objects ACI aci1 = ACI_DEFAULTS; ACI aci2 = ACI_DEFAULTS; Invoking the computation function aci1.calc(&aci1); aci2.calc(&aci2);
pu pu ualfa ubeta load_torque pu pu pu ACI pu pu pu pu Q0 ialfa ibeta psi_r_alfa psi_r_beta torque wr wr_rpm
Availability
This IQ module is available in one interface format: 1) The C interface version

Each pre-initialized “_iq” ACI structure consumes 46 words in the data memory
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Code size mentioned here is the size of the calc() function
1
Interface C Interface Object Definition The structure of ACI object is defined by following structure definition typedef struct { _iq ualfa; _iq ubeta; _iq load_torque; _iq ialfa; _iq ibeta; _iq psi_r_alfa; _iq psi_r_beta; _iq torque; _iq wr; long wr_rpm; _iq K1; _iq K2; _iq K3; _iq K4; _iq K5; _iq K6; _iq K7; _iq K8; _iq K9; _iq K10; long base_rpm; _iq alpha; void (*calc)(); } ACI; typedef ACI *ACI_handle; /* Input: alfa-axis phase voltage */ /* Input: beta-axis phase voltage */ /* Input: load torque */ /* Output: alfa-axis phase current */ /* Output: beta-axis phase current */ /* Output: alfa-axis rotor flux */ /* Output: beta-axis rotor flux */ /* Output: electromagnetic torque */ /* Output: electrically angular velocity */ /* Output: motor speed in rpm (Q0) */ /* Parameter: constant using in rotor flux calculation */ /* Parameter: constant using in rotor flux calculation */ /* Parameter: constant using in rotor flux calculation */ /* Parameter: constant using in stator current cal */ /* Parameter: constant using in stator current cal */ /* Parameter: constant using in stator current cal */ /* Parameter: constant using in stator current cal */ /* Parameter: constant using in torque calculation */ /* Parameter: constant using in rotor speed cal */ /* Parameter: constant using in rotor speed cal * / /* Parameter: base motor speed in rpm */ /* Parameter: trapezoidal integration parameter (0-1) */ /* Pointer to calculation function */