| 摘要 |
PURPOSE: A stator resistance estimating method of a motor is provided to enhance estimation accuracy of stator resistance. CONSTITUTION: A first magnetic flux current is applied to a motor control device and a first command voltage is saved(S11). The first command voltage is command voltage which makes a difference of first command current and actual current with 0. A stator resistance estimated value for the first magnetic flux current is calculated(S12). Integral multiple of the first magnetic flux current is applied and command voltage at the time is saved(S13). A stator resistance estimated value for a second magnetic flux current is calculated(S14). Stator resistance is estimated using a first resistance estimated value, a second resistance estimated value, the first magnetic flux current, or the second magnetic flux current(S15). [Reference numerals] (AA) Start; (BB) End; (S11) A first magnetic flux current(ids1) is applied and a first command voltage(Vds1) is saved; (S12) A stator resistance estimated value(Vds1) for the ids1 is calculated; (S13) A second magnetic flux current(ids2 = ids1) is applied and a command voltage(Vds2) is saved; (S14) A stator resistance estimated value(Rs2) for the ids2 is calculated; (S15) A stator resistance estimated value(Rs) is calculated
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