Question

Assignment 4: DC drive (due 25/07/2020) Figure Assta: Armature states for 4-quadrant operation of de machine TM II Reverse braking Forward motoring 00 III Va Reverse motoring nofoto IV Forward braking Figure Ass4b: H-bridge configuration for 4- quadrant operation of de machine Vde HK va T2 14 K rowheel diode Determine the switch states of T1-T4 in Figure Ass 4b for 4-quadrant operation described in Figure Ass 4a, sketching the path of current flow and terminal polarity for each operation type (Quadrant I-IV).

Answer 1

Delution 1st quartant I abt of 18 T is on. . Fa Ta dc Va=c Ho € Ia and quardant Antiparballed Liode of the Te is on & Ta Ta Va=-c ta 3rd quardant I abt of T38 Tz is on Ta Va =- Ia Ta

4th quarkant Antiparalld Liode of Tista is on. Ta ta Vac M Va a = vac Ia