Bidirectional switching power apparatus with AC or DC output

Details Bidirectional switching power apparatus with AC or DC output Bidirectional switching power apparatus with AC or DC output

1990-05-02

1991-10-15

Stephan, Steven L.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363132, 323350, H02M 7537

Patent

active

050579908

ABSTRACT:
The bidirectional switching power apparatus converts DC input voltage into single AC or multiple DC output voltages. Power transformer is used if line isolation is necessary. Number of switching components and peak currents thereof are minimal. The DC input voltage is lower than the AC or DC output voltages. The switching power apparatus has a first and second capacitors coupled to ground for storing a first and second voltages respectively. One switch selectively applies the DC input voltage across an inductor which attains a current. Another switch selectively applies the current to ground. A diode applies the current to the first capacitor. An amplifier converts the first and second voltages into the AC output signal. Two other diodes apply the second voltage and AC output signal to a node. The DC input voltage is referenced to the node rather than ground.

REFERENCES:
patent: 4476441 (1984-10-01), Gulczynski
patent: 4736286 (1988-04-01), Gulczynski
patent: 4740878 (1988-04-01), Carter et al.
patent: 4763080 (1988-08-01), Gulczynski
patent: 4803610 (1989-02-01), Gulczynski
patent: 4845391 (1989-07-01), Gulczynski
patent: 4853837 (1989-08-01), Gulczynski
patent: 4871980 (1989-10-01), Gulczynski
patent: 4940906 (1990-07-01), Gulczynski
patent: 4947308 (1990-08-01), Gulczynski
patent: 4949234 (1990-08-01), Gulczynski
patent: 4956760 (1990-09-01), Gulczynski

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