| 摘要 |
PROBLEM TO BE SOLVED: To steadily control the velocity of a motor in the saturated region of an inverter's output voltage. SOLUTION: When a voltage phase δ is greater than a first reference voltage phase δH, a second velocity command ωref' is reduced by a prescribed value ω1, and when the voltage phase δ is smaller than a second reference voltage phase δL, a first velocity command ωref is made the second velocity command ωref', and when the voltage phase δ is smaller than the first reference voltage phase δH and greater than the second reference voltage phase δL, the second velocity command ωref' is maintained as it is. |
