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- W4310934181 abstract "In this chapter, the authors treat the direct-current (dc) machines sufficient to introduce the reader to the operating principles of dc machines with focus on the shunt-connected and permanent-magnet dc machine and drive. The magnets are samarium cobalt and the device is used to drive hand-held battery-operated surgical instruments. It is important to understand that the commutator and brush combination is to change the direction of current flow in the rotor windings so that for positive current into the machine flows into the paper over the top part of the rotor and out over the bottom part for motor action. The action of the commutator causes the armature coils to appear as a stationary winding with its magnetic axis orthogonal to the magnetic axis of the field winding. The authors focus on the permanent-magnet dc machine supplied from a two-quadrant dc converter, and provide rigorous derivation of the voltage and torque equations." @default.
- W4310934181 created "2022-12-21" @default.
- W4310934181 date "2022-12-02" @default.
- W4310934181 modified "2023-09-28" @default.
- W4310934181 title "Direct Current Machine and Drive" @default.
- W4310934181 doi "https://doi.org/10.1002/9781119908357.ch5" @default.
- W4310934181 hasPublicationYear "2022" @default.
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