INTEGRATED BYPASS APPARATUS, SYSTEM, AND/OR METHOD FOR VARIABLE-FREQUENCY DRIVES

摘要

In the field of variable-speed motor control, a bypass circuit and corresponding bypass electronics (138) can be integrated advantageously with a variable-frequency drive ("VFD") circuit and corresponding electronics (110). Such an integrated bypass can be disposed within a single unitary enclosure housing the VFD. Some advantages of the integrated bypass include reduced size, cost, and/or complexity in the combined VFD/bypass assembly, the ability to manage airflow in bypass without running a fan motor full time, and support for integrated power metering using multi-purposed current transformers (112).