Electrical inverter with controllable output voltage

Details Electrical inverter with controllable output voltage Electrical inverter with controllable output voltage

1980-01-22

1982-03-02

Shoop, William M.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

H02M 112

Patent

active

043181678

ABSTRACT:
An electrical inverter with controllable output voltage comprises a three-phase self-commutated inverter bridge which is supplied from a d.c. voltage source. A reference signal generator generates a three-phase binary reference signal for controlling the shape of the curve of the output voltage of the inverter. This signal is modulated or mixed in a mixing stage with a binary pulse train having a controllable pulse-width ratio and a relatively high frequency. The output signal from the mixing stage is supplied to the inverter bridge in such a way that the output voltage of the inverter bridge corresponds to the product of the reference signal and the pulse train.

REFERENCES:
patent: 3324376 (1967-06-01), Hunt
patent: 3523236 (1970-08-01), Howell et al.
patent: 3609507 (1971-09-01), Beck

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