직권 전동기의 완전한 별도 계자제어를 위한 새로운 2상한 쵸퍼

New Two-Quadrant Chopper for Complete Decoupled Field Control of DC Series Motor

New chopper circuits for decoupled operation of the dc series motor are presented. These new choppers are capable of controlling field current completely separately, while offering capability of bidirectional armature energy flow. To develop the chopper circuit with minimum number of swithcing elements, the complete family of possible conduction circuits are systematically investigated. Then one or two quadrant chopper circuits which offer the desired operations are synthesized from the resulting conduction circuits. Finally, the developed chopper circuits are analyzed in the steady state. The details of operation of the chopper circuits are also fully described and experimented.