Isamu Hosono

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The development of digital devices has led to the production of PWM inverters for driving induction motors having high-frequency carriers over 10 000 Hz. However, the popular digital devices exhibit difficulties in arriving at the precise switching instants because of limitation of available memory capacity and of bits, especially in the low-frequency(More)
A high-frequency split-zero-vector method utilizing lower-harmonics-eliminated pulse-width modulation (PWM) is proposed. The selected sixth multiple lower harmonics are eliminated from the amplitude of the flux vector on the assumption that the rotation speed of the flux is kept constant. This method is easily performed by normal speed microprocessors,(More)
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