職安知識之「點解噴油房要用 Brushless (BL) Motor」
Technology | Makita 牧田(香港)有限公司 – Brushless Motor
What is BL Brushless Motor?
A conventional brushed motor is made up of carbon brushes, a ring of magnets (stator), an armature, and a commutator. When the motor is energized, a charge travels from the battery, through the brushes, into the commutator, and into the windings of armature. Then the magnetized armature starts to rotate. However, the magnets of Makita BL Brushless Motor are on the conventional motor shaft and the copper windings are fixed and surround the shaft. A small circuit board coordinates the energy delivery to the windings and controls the rotation of motor shaft. Therefore, carbon brushes and commutator are not required for brushless motor.
什麼是BL無碳刷馬達?
傳統碳刷式馬達由碳刷,磁鐵環(定子),轉子及銅頭組成。當馬達通電時,電流會由電池傳到碳刷,再通過銅頭傳到轉子的線圈。最後,磁化的轉子就開始旋轉。但是,BL無碳馬達的磁鐵則位於馬達軸心上,並由線圈包圍。電路板控制傳輸到線圈的能量,從而控制馬達的旋轉。因此,BL無碳刷馬達無需碳刷及銅頭。
直流馬達-無刷馬達-專業直流馬達製造廠 :: 中貿有限公司 :: NICHIBO DC MOTOR-什麼是無刷直流馬達?
什麼是無刷直流 (BL DC)馬達 – DC無刷馬達?
※無刷馬達的主要特徵
1. 無機械式的電刷及整流子
2. 夀命長
3. 不產生機械的雜音(除軸承部份)
4. 電刷部份不會產生碳粉、油霧等污垢
5. 不會產生電氣雜訊,不會有電波干擾
6. 不產生火花
7. 可以用於高速旋轉馬達
8. 容易製造多極型馬達
9. 正反轉扭力大
10.馬達特性與一般DC馬達相同
11.能夠製造扭力穩定、轉速穩定的馬達
12.需要驅動電路
13.可由控制器改善馬達特性
※效率比較
無刷馬達的轉子採用永久磁鐵,可減少轉子的二次損失;有刷馬達換向器與電刷摩擦損耗,電刷壓降損耗
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