| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve such a problem that when connecting a step-up chopper circuit for connecting first and second inductors in parallel with the input of a series circuit of a first capacitor connected in parallel with a series circuit of a first diode and a first semiconductor switch, and a second capacitor connected in parallel with the series circuit of a second diode and a second semiconductor switch, the number of inductors increases, resulting in a large and expensive device.SOLUTION: When expanding the capacity by connecting first and second switch series circuits, each consisting of series connection of a diode and a semiconductor switch, in series, connecting each series circuit with a first and second capacitors in parallel, connecting a plurality of conversion circuits, each having the series connection point of the first and second switch series circuits as an input terminal, in parallel, and then connecting an inductor between a DC power supply and each input terminal, the diodes connected directly in parallel in each of a plurality of semiconductor devices are constituted of wide bandgap semiconductors.</p> |
