
292 Electric Motors and Drives
looked at a typical example in Chapter 6, the run-up
behaviour being contrasted with that of a constant-torque
load in Figure 6.4.
GENERAL APPLICATION CONSIDERATIONS
Regenerative operation and braking
All motors are inherently capable of regenerative operation,
but in drives the basic power converter as used for the
'bottom of the range' version will not normally be capable
of continuous regenerative operation. The cost of providing
for fully regenerative operation is usually considerable, and
users should always ask the question 'do I really need it?'
In most cases it is not the recovery of energy for its ow