Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1995-06-07
1996-12-24
Wong, Peter S.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 98, H02M 75387
Patent
active
055878911
ABSTRACT:
An electric power converting apparatus equipped with a 3-level PWM control in which the output voltage can be continuously and smoothly controlled from zero to a maximum voltage. The electric power converting apparatus includes a multi-pulse generating unit arranged for a dipolar modulation, a unipolar modulation, and an overmodulation; a 1-pulse generating means; and a unit for controlling the transfer operation among these modulation regions.
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Nakamura Kiyoshi
Nakata Kiyoshi
Suzuki Masato
Tanamachi Tokunosuke
Terunuma Mutsuhiro
Hitachi , Ltd.
Riley Shawn
Wong Peter S.
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