| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensorless drive control device, capable of configuring a γδ voltage coordinate system stably and performing efficient drive control on the γδ voltage coordinate system.SOLUTION: The device for drive and control of a permanent magnet synchronous motor, in particular, the sensorless drive controller that utilizes a phase determiner in order to secure a phase for a vector rotation device required for drive control or a converter incorporating the vector rotation device. The phase determiner determines a phase for the vector rotation device stably such that a stator voltage on a γδ coordinate system is present on a δ axis. The phase determiner includes a coordinate system basic speed generation means for generating the basic speed of a coordinate system by multiplying a value equivalent to a δ axis element of the stator voltage by a fixed coefficient, a coordinate system final speed generation means for generating the final speed of the coordinate system by generating the correction speed of the coordinate system by use of at least a value equivalent to a γ axis element of the stator voltage and adding the correction speed of the coordinate system to the basic speed of the coordinate system, and a phase generation means for generating a phase to be used for the vector rotation device or the converter incorporating the vector rotation device by integrating the generated final speed of the coordinate system. |
