PWM cycloconverter and control method for PWM cycloconverter

Details PWM cycloconverter and control method for PWM cycloconverter PWM cycloconverter and control method for PWM cycloconverter

2005-05-31

2009-08-18

Sterrett, Jeffrey L (Department: 4116)

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

By semiconductor converter

C363S165000

Reexamination Certificate

active

07577009

ABSTRACT:
It is an object of the present invention to provide a PWM cycloconverter that can compensate an error between a voltage command and a real voltage generated by a commuting operation.The PWM cycloconverter for solving the above-described problem includes: an input voltage phase detector (6) for detecting the phase of the voltage of a three-phase ac power source (1); a current direction detector (7) for detecting the direction of a current supplied to a two-way semiconductor switch (3); and a commutation compensator (11) for receiving the outputs of the input voltage phase detector and the current detector as inputs to compensate for a voltage command.

REFERENCES:
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patent: 11-98840 (1999-04-01), None
patent: 11098840 (1999-04-01), None
patent: 2000-2724 (2000-01-01), None
patent: 2003-309975 (2003-10-01), None
patent: 2003-333851 (2003-11-01), None

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