| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in conventional general purpose motor drivers for brushless motors for home electric appliances, in which, since input given from an upper speed controller is a duty command, to introduce a vector control as it is, the duty command from the upper controller requires to be converted into a current command, and not only a motor but the upper controller also requires to be changed.SOLUTION: A current command or a speed command, in which the duty command input from the upper controller is equal to an actual duty output from an inverter, is calculated to perform a vector control based on the calculated current command or speed command. |
