Abstract
A new field-oriented control strategy for induction motor is proposed in the paper. It is called Maximum Torque Per Watt (MTPW) and allows obtaining the minimum value of the sum of the stator and rotor losses due to joule effect, and of the iron losses, for a given value of the reference torque and of the motor speed. Iron losses have been modeled according to Steinmetz equation, separating hysteresis and eddy currents and taking into account the dependence both on the frequency and on the peak value of the flux density. Numerical and experimental results are presented to confirm the validity of the proposed approach, which allows achieving significant improvements in the efficiency of induction motor drive.
Highlights
One of the “must” of classic field-oriented control of induction motor is to keep the amplitude of the rotor flux at rated value, to get a fast and accurate control of the electromagnetic torque [1,2]
In [18], an online loss minimization algorithm performs the determination of the flux level for the efficiency optimization. It is based on an induction motor loss model, which models the iron losses by means of a resistor added in parallel to the magnetizing current in the rotor flux reference frame
Maximum Torque Per Ampere (MTPA) control strategy removes the constraint of keeping the rotor flux at its maximum value as in the traditional field-oriented control (T-FOC) and calculates the reference values is∗d to get at steady state the minimum amplitude of the stator current
Summary
One of the “must” of classic field-oriented control of induction motor is to keep the amplitude of the rotor flux at rated value, to get a fast and accurate control of the electromagnetic torque [1,2]. In [18], an online loss minimization algorithm performs the determination of the flux level for the efficiency optimization It is based on an induction motor loss model, which models the iron losses by means of a resistor added in parallel to the magnetizing current in the rotor flux reference frame. The contribution of this paper consists in proposing a new field-oriented control strategy for induction motor called Maximum Torque Per Watt (MTPW) It allows evaluating the reference currents for the control of the motor so as to obtain the minimum value of the sum of the stator and rotor losses due to joule effect, and of the iron losses, as a function of the reference torque and of the motor speed.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
