Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1996-02-08
1997-04-15
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 96, H02M 324
Patent
active
056216343
ABSTRACT:
A power converter including a series circuit of DC power sources, a series circuit of positive side and negative side reverse conducting semiconductor switches. The power converter also includes a forward diode and a reverse diode connected from a neutral-point power source terminal toward the positive side and negative side reverse conducting semiconductor switches, respectively. The power converter includes intermediate DC power sources connected to the neutral-point power source terminal for generating predetermined voltages between potentials of positive side and negative side power source terminals and the neutral-point power source terminal, respectively, and commutation circuits composed of a series circuit of a two-way semiconductor switch and a reactor connected between the positive side and negative side intermediate voltage terminals and the positive side and negative side conductive semiconductor switches, respectively. The power converter further includes a voltage change-rate suppressing capacitor connected between one of power source terminals, the neutral-point power source terminal, intermediate voltage terminals and one of connecting points of adjacent two of the reverse conducting semiconductor switches.
REFERENCES:
patent: 5047913 (1991-09-01), De Doncker et al.
patent: 5155675 (1992-10-01), Mauyama et al.
patent: 5253157 (1993-10-01), Severinsky
patent: 5475580 (1995-12-01), Noro
IEEE, pp. 1228-1235, Oct. 1990, R. W. De Doncker, et al., "The Auxiliary Resonant Commutated Pole Converter".
Kabushiki Kaisha Toshiba
Nguyen Matthew V.
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