H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/53 (2006.01) H02P 7/29 (2006.01) H02M 7/5387 (2006.01)
Patent
CA 2377112
A control circuit of a power converter is provided which is capable of selecting an optimal mode for reducing the number of times of switchings. The control circuit includes a current instruction generator 801 for providing current instruction values IAU* - IAW* to a current loop which controls output currents of the power converter 1, a current deviation vector detector for calculating current deviations ° iU - .DELTA. iW between the current instruction values and corresponding feedback values, respectively; a voltage detector 812 for calculating a voltage vector of three-phase voltage generators 5U - 5W, and a PWM pattern selector 811 for selecting a PWM pattern for the power converter 1. When the current deviation vector deviates from the allowable deviation range, the PWM pattern selector selects a switching mode for the power converter 1 from among switching modes limited by values of the current deviation vector and the voltage vector, and outputs the PWM pattern.
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
Toshiba Mitsubishi-Electric Industrial Systems Corporation
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