SPRUHJ1I January 2013 – October 2021 TMS320F2802-Q1 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027-Q1 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F2806-Q1 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1
The rated flux for an ACIM motor is required for a full identification. This rated flux is set in user.h as follows:
#define USER_MOTOR_RATED_FLUX (0.8165*220.0/60.0)
The way this flux is calculated is by the name plate of the motor. For example, if the motor is rated for single phase 220VAC and 60 Hz then this value is calculated as follows:
Another example is a motor with the same input voltage of 220 VAC but a rated frequency of 50 Hz. This would result in a rated flux of:
The 2 sqrt 2 term is to convert single phase RMS voltage value to peak voltage, and the 1 3 1 over sqrt 3 term is to convert motor line-to-line voltage to motor line-to-neutral voltage. Based on the rated flux of a given motor, it is to identify the Id Rated current for half of the rated flux. In such a case, simply enter the desired flux or a portion of it. Notice that the voltage needed to calculate rated flux is in the motor line to motor neutral, hence the conversion from 220 VAC (motor line to motor line) to VDC (from motor line to motor line), and then from VDC (from motor line to motor line) to VDC (from motor line to motor neutral).