Meidensha Corporation

Akira Shigaki

Yasuhiro Yamamoto

Masakazu Muneshima

Yu Sasaki

Takuya Sugai

A correction-term adder 1 compares a maximum value max(V*) with an absolute value of a minimum value min(V*). The correction-term adder 1 selects a signal 1&#x2212;max(V*) when the maximum value max(V*) is larger than the absolute value of the minimum value min(V*), on the other hand, selects a signal &#x2212;1&#x2212;min(V*) when the absolute value of the minimum value min(V*) is larger than the maximum value max(V*). Thereby, a signal of correction amount &#x3b1; is calculated. Moreover, the correction-term adder 1 produces a triangular-wave-shaped signal k(max(V*)+min(V*)) by multiplying a gain k by an addition signal max(V*)+min(V*) of the maximum value max(V*) and the minimum value min(V*). This triangular-wave-shaped signal k(max(V*)+min(V*)) is synchronized with the correction amount &#x3b1;. The correction-term adder 1 produces a correction amount &#x3b2; by selecting smaller one in absolute value between the triangular-wave-shaped signal k(max(V*)+min(V*)) and the correction amount &#x3b1;, and adds the correction amount &#x3b2; to the voltage command values V*, V*, V*.

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Tokyo, Japan

Akira Shigaki