From most efficient to least, here’s how the five motor technologies stack up: salient-pole PM, nonsalient PM, synchronous-reluctance, switched-reluctance and, last but not least, induction motors.

By now, most engineers who work with induction motors know that new efficiency standards went into effect for them last year. The Energy Independence and Security Act (EISA) mandated upgrades to ...

AC induction Motors Since AC induction motors have been established as the preferred choice for industrial motors and the need for reduced power in all aspects of design is ever present, the ...

In a data center, loads can vary widely depending on the time of day. Identifying a motor with a flat efficiency curve, regardless of load, optimizes the overall efficiency of the HVAC system.

All in all, three-phase ac induction motors demonstrate high efficiency and can maintain it across a substantial range of loading conditions. But when fed by inverter power, these motors ...

Incremental efficiency gains are the focus of the DOE’s efficiency standards. Regulating efficiency advances sustainability objectives, supports yearly cost savings for customers and may accelerate ...

Energy makes up 80 percent of the cost of owning and operating a motor over its lifespan. That’s why motor makers have spent decades trying to build ever more energy-efficient designs. But with ...

In today’s world, motors are ubiquitous, powering everything from household appliances to industrial machinery. The importance of optimizing motor control for energy efficiency cannot be overstated, ...

Motor efficiency The Energy Policy Act (EPAct) became effective in 1997. EPAct requires 1-hp to 200-hp general-purpose motors sold in the United States to meet minimum efficiency levels, referred to ...

Second, more aerodynamic fan design will not necessarily deliver the energy savings needed to comply with the proposed rules. That’s because fan design changes can be extremely difficult to implement ...