There has been a growing concern over
energy consumption since the past decade mainly because of
the soaring cost of energy and tight environmental laws and
regulations. In this thesis a model based efficiency
optimization for speed control of interior permanent magnet
synchronous motor (IPMSM) is proposed to improve the
efficiency of the motor drive which usually operates at
different load and speed conditions. Recently, the IPMSM has
been becoming popular due to some of its advantages such as
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