How will be the size and cost of a rotating electric machine that has a higher output coefficient be?

The size and cost of a rotating electric machine with a higher output coefficient, generally speaking, tend to increase as the output power and efficiency requirements go up. However, advancements in technology and materials can lead to more efficient designs that either maintain or reduce the size and cost while improving the performance. The term “output coefficient” isn’t standard in electric machine design, but if we’re discussing improvements in efficiency (i.e., more output power for the same input power) or power density (more power output per unit volume), several factors come into play:

1. Higher Efficiency Materials: The use of high-grade electrical steel for the core and improvements in copper conductors can reduce losses, but these materials are often more expensive. High-quality magnetic materials that reduce eddy current and hysteresis losses can significantly increase cost.

2. Advanced Cooling Techniques: High-output machines may generate more heat, requiring sophisticated cooling methods like liquid cooling systems, which increase both size (to accommodate the cooling system) and cost.

3. High-performance Insulation: To handle higher power densities and temperatures, more advanced insulation materials might be necessary, impacting cost.

4. Size Considerations: To improve the output coefficient, the machine might utilize better design principles that maximize the magnetic flux density and minimize losses. This can sometimes allow for a smaller size if the materials and design are optimized. However, achieving a compact size with high efficiency might require expensive materials and manufacturing techniques.

5. **Manufacturing Technologies