Page 258 - Electric Drives and Electromechanical Systems
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Chapter 10   Controllers for automation  255



                                                                                it
                                                                                where  5 s.

                                                                                10 s  at  the
                                                                                until  applied  is  and

                                                                                3000 rpm,  torque  motor  the


                                                                                to  load  in
                                                                                set
                                                                                is  external  dissipated
                                                                                demand  An  is


                                                                                speed  1 s.  in  which  of

                                                                                motor  3000 rpm  part

                                                                                the  to  up  decreased,
                                                                                application,  ramped  is  speed



                                                                                the  is  the
                                                                                In  speed
                                                                                10.7.  motor  when
                                                                                Fig.  motor
                                                                                in  the  the
                                                                                shown  current,  from

                                                                                system  starting  returned

                                                                                simulated  excessive  being  supply.


                                                                                the  energy  the
                                                                                from  prevent  to  the  to

                                                                                results  is  note  returned

                                                                                The  1000 rpm;  to  is
                                                                                10.8  to  point  remainder
                                                                                FIG.  drops  One
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