A multi-microprocessor controller for a VV-VF cycloconverter-link brushless DC motor drive

A method of thyristor gating management to allow operation of a cycloconverter-link brushless DC motor drive from a variable-voltage variable-frequency (VV-VF) source is presented. Multiple microprocessors are utilized to assure that no compromise in signal processing priority is necessary as both motor and source frequency vary independently over a wide range. The architecture and logic of the design are discussed. Some experimental results are presented for operation of a laboratory model of the drive system on a load simulator.<
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