Title :
An investigation into improving the commutation of a DC machine
Author :
Parsley, G.M.J. ; Landy, C.F. ; Meyer, A.S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Pretoria Univ., South Africa
fDate :
Sept. 28 1991-Oct. 4 1991
Abstract :
A primitive slip-ring machine mode is used to describe a DC machine. From this model an expression is derived to describe the voltage which, if allowed to exceed a certain value, causes commutator sparking and is thus an indication of ineffective commutation. The expression for this voltage contains, interalia, two rotational inductances which are clearly dependant on the geometry of the machine. It is proposed that the finite element analysis should be used to determine what aspects of the machine geometry should be rearranged to adjust these rotational inductances with a view to reducing or eliminating this voltage and hence improve the commutation performance of the machine.<>
Keywords :
DC machines; commutation; finite element analysis; machine theory; DC machine; commutator sparking; finite element analysis; rotational inductances; slip-ring machine mode; Africa; Coils; Commutation; DC machines; Geometry; Machine windings; Magnetic separation; Saturation magnetization; Testing; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Dearborn, MI, USA
Print_ISBN :
0-7803-0453-5
DOI :
10.1109/IAS.1991.178152
