Abstract
An energy efficiency strategy is developed in this article using a simplified dynamic direct voltage MTPA speed control method for interior permanent magnet synchronous motors (IPMSMs). Finding an exclusive pair of the motor voltage angle and amplitude attains the MTPA trajectory tracking for each reference speed and/or torque condition, maintaining minimum current/power consumption and higher energy efficiency. This improvement is realized by taking into account the dynamic model of the motor, which makes the technology more precise in various operating conditions as contrary to existing literature. Further, the simplified dynamic strategy needs tuning of only couple of parameters compared to three times as much with the classical MTPA FOC technique. Moreover, a comparative study of the simplified dynamic direct voltage MTPA control methodology and the FOC strategy is carried out. Experimental outcomes and quantitative assessment prove that the simplified dynamic direct voltage MTPA control strategy is a worthy approach. Also, it is a substitution to the current MTPA methods and delivers higher efficiency for the IPMSMs' drive in modern industrial applications.
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