6SL3352-1AE36-1CA1

6SL3352-1AE36-1CA1

6SL3352-1AE36-1CA1

電磁轉矩是電動機旋轉磁場各極磁通與轉子電流相互作用而在轉子上形成的旋轉力矩。是電動機將電能轉換成機械能重要的物理量之一 ，仍是阻尼分析與控制的理論基礎。

當電樞繞組中有電樞電流流過時，通電的電樞繞組在磁場中將受到電磁力，該力與電機電樞鐵心半徑之積稱為電磁轉矩。

由感應電動機工作原理知，感應電動機的電磁轉矩可以由電磁功率除以電機的同步機械角速度求得，而電磁功率對應于轉子電流在等效電路中轉子等效電阻Rr′/s上所產生的功率。對于兩相感應伺服電動機，由于經常工作在不對稱運行狀態(tài)，電機中既有正序磁動勢產生的正向旋轉磁場，又有負序磁動勢產生的反向旋轉磁場，正向旋轉磁場將使電機工作在電動機狀態(tài)，產生正向電磁轉矩T1，而反向旋轉磁場則使電機工作在電磁制動狀態(tài)，產生反向電磁轉矩T2，伺服電動機的電磁轉矩應為T1-T2。而T1和T2可分別由正序旋轉磁場和負序旋轉磁場產生的電磁功率求得。

B 6FX1863-0BX01-4C

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