October 2020
Intermediate to advanced
450 pages
15h 32m
English
Content preview from Electrotechnical Systems
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202 Electrotechnical Systems
Choosing the next inverter state depends on the output of this table and on the
angle position of the ux linkage vector, which is characterized by the number of 60°
sector, in which this vector is located (see above). Thus, one of the four inverter states
correspond to each input of Lookup Table1; the values determined are thus relevant
to the sector number of the vector Ψ
s
position. When it is necessary to decrease the
torque, the zero states are used, which leads to a reduction in the torque pulsation.
Such a system works well even at very low speeds when it is reasonable to use only
active states. Furthermore, ...
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