主電動機の高効率設計による電車の省エネルギー効果

摘要

標準的な通勤電車を対象にして，設計計算とシミュrnレーションにより，主電動機の材料選定による効率向上rn効果と走行時の消費エネルギー低減効果を評価した。rnその結果，材料の選定により主電動機の発生損失が大rnきく変わり，最も差が大きい場合で，定格点の効率でrn2.5%，走行時の主電動機損失で28%，消費エネルギーでrnは14%の差が生じる結果となった。%Most of the traction motors of recent electric trains are composed of induction motors. High efficient induction motors can help railway operators reduce their electricity cost. However, the operators tend to focus on the product cost rather than the electricity cost. Consequently, there is some room to improve the efficiency of them. In this paper, the author compares a high efficient motor with a low cost one in a standard commuter train. The result indicates that the loss of the high efficient motor is lower by 28% than that of the low-cost one.