Control circuit for power converter apparatus

H - Electricity – 02 – M

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321/97

H02M 7/162 (2006.01) H02M 1/084 (2006.01) H02M 7/155 (2006.01)

Patent

CA 1220815

ABSTRACT OF THE DISCLOSURE Disclosed is a control circuit for a power converter apparatus using self-extinction devices as switching devices, in which turn on and turn off opera- tions of the self-extinction devices are controlled by gate pulses which have been subject to pulse width modulation with a pulse train having a pulse width which is sinusoidally varied, and, at the same time, the self- extinction devices in same phase are made conductive in a predetermined period corresponding to an output voltage reference value to make an output of the power converter apparatus be in a shorted state in the sense of DC current to thereby control the output of the power converter apparatus.

472585

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