Method for powering mining equipment

Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Analog armature control

Reexamination Certificate

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Details

C318S139000, C318S254100, C318S434000

Reexamination Certificate

active

07398012

ABSTRACT:
Certain exemplary embodiments can include a static DC electric drive system for mining equipment. The drive system can include: an active front end adapted to receive an AC voltage and output a substantially constant DC voltage; and a DC chopper coupled to the active front end, the DC chopper adapted to receive the substantially constant DC voltage and output a variable DC voltage.

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