| CPC H02P 5/56 (2016.02) [H04L 7/04 (2013.01)] | 16 Claims |
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1. A drive system comprising:
a first drive device including a first power converter that supplies first electric power to a winding of a first electric motor and a first controller that controls the first power converter;
a second drive device including a second power converter that supplies second electric power to a winding of a second electric motor and a second controller that controls the second power converter; and
a master device controlling the first controller and the second controller using a first period and a reference period including a plurality of the first periods,
wherein the master device transmits identification information of each first period and a first transmission synchronization signal for each first period of the reference period or transmits identification information of each first period, a first transmission synchronization signal, and a second transmission synchronization signal for each first period of the reference period,
wherein the first controller adjusts a phase of each first control period such that the first control period is synchronized with a timing associated with a specific first synchronization signal out of a plurality of first synchronization signals which are acquired by reception of the first transmission synchronization signal a plurality of times using the identification information and controls the first power converter using the first control period, and
wherein the second controller adjusts a phase of each second control period such that the second control period is synchronized with a timing associated with a specific second synchronization signal out of a plurality of second synchronization signals which are acquired by one of reception of the first transmission synchronization signal a plurality of times and reception of the second transmission synchronization signal a plurality of times using the identification information and controls the second power converter using the second control period.
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