
7-1
7.1 Introduction
Switched-reluctance machines (SRM) have resurfaced in the eld of adjustable speed motor drives over
the past three decades. is has been mainly contributed to enabling technologies and devices oered by
power electronics, the semiconductor industry, and cost-eective microprocessors. Being complemented
by a rugged structure (see Figure 7.1) suitable for harsh environmental conditions and high-speed appli-
cations, a brushless structure that requires minimum maintenance, and a wide constant power region at
an aordable cost has turned SRM into a prime candidate for niche industrial and domestic applications.
Considering