Control of the mains bridge of a frequency converter

Details Control of the mains bridge of a frequency converter Control of the mains bridge of a frequency converter

2007-07-24

2007-07-24

Patel, Rajnikant B. (Department: 2838)

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

C363S098000, C318S800000, C318S803000

Reexamination Certificate

active

11153607

ABSTRACT:
A method and a system for controlling the mains bridge of a four-quadrant PWM frequency converter provided with a direct-voltage intermediate circuit when power is flowing into the supply network. The mains bridge includes a controlled mains bridge (INU) for rectification of the mains voltage to produce a DC intermediate-circuit direct voltage (UDC) consisting of arms conducting during the positive and negative half cycles of the phase voltage of each phase of the supply network, each arm having a switch unit formed by a diode (D1–D6) and a power semiconductor switch (V1–V6), e.g. an IGBT, connected in inverse-parallel with it.

REFERENCES:
patent: 4609983 (1986-09-01), Braun
patent: 6801441 (2004-10-01), Salama
patent: 0606501 (1997-12-01), None
patent: 108819 (2002-03-01), None
patent: 1147760 (2004-12-01), None
patent: 62104481 (1987-05-01), None
patent: 06327291 (1994-11-01), None

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