Modular AC-AC variable voltage and variable frequency power conv

Details Modular AC-AC variable voltage and variable frequency power conv Modular AC-AC variable voltage and variable frequency power conv

1997-06-02

1999-06-01

Berhane, Adolf Deneke

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

By semiconductor converter

H02M 5293

Patent

active

059093676

ABSTRACT:
An AC--AC multi-module matrix PWM converter includes one to a plurality of phase banks within which are provided architecturally identical basic circuit modules of single phase output AC--AC matrix converters. Each basic converter module includes three-phase AC inputs and two output terminals. The modules may then be interconnected in series or parallel with other modules within a phase bank to increase the output voltage or current respectively of the phase bank. The differential power module structure and the differential phase PWM modulation scheme increases the output voltage by 15.5% in comparison with 120.degree. phase modulation. Individually designed and tested phase banks can be further connected to a higher power symmetric three phase system or multiphase system for various AC load and AC motor controls. The modular structure permits standardization of the power electronics design and manufacture at system level. The modular design permits using power components at lower voltage or current rating with low cost while obtaining higher power output through module integration.

REFERENCES:
patent: 4468725 (1984-08-01), Venturini
patent: 4628425 (1986-12-01), Venturini et al.
patent: 4697230 (1987-09-01), Neft

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