| 摘要 |
PURPOSE: To lessen the number of expensive insulating transformers or insulating amplifiers to be used in a three phase/two phase converter circuit used for the primary flux operation of the hybrid device of an engine and an induction motor, and to simplify its arithmetic circuit. CONSTITUTION: The potential of the first phase w out of three-phase AC voltages is used as a reference potential. The linear voltage Vvw between the second phase v and the first phase w, and the linear voltage Vwu between the first phase w and the third phase u are inputted to an arithmetic circuit through insulating transformers respectively, and specified calculation is performed by the arithmetic circuit to output two phase AC voltages Vd and Vq meeting at right angles. |
