| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverter controller in which a correct phase current can be detected even if the roundness or the rise delay of a detected voltage waveform occurs, and to provide a current detecting method in the same. <P>SOLUTION: The inverter controller comprises a detecting means for detecting voltages corresponding to line currents flowing through current supply passages of a three-phase inverter, and a computing means for computing (detecting) three phase-currents having different phases based on the detected voltages. The three-phase inverter is efficiently controlled based on the computed three phase-currents. The detecting means is constituted so as to detect the voltage to be detected at timing of a prescribed time either before and after the reference point of the generation start timing of a subsequent voltage to be detected. <P>COPYRIGHT: (C)2003,JPO |
