Snubber circuit and power conversion apparatus

A snubber circuit, comprising:

• N charge paths (N is an integer equal to or larger than two) in parallel, each of which includes a positive-side capacitor, a first diode, and a negative-side capacitor which are sequentially connected in series between a positive-side wiring and a negative-side wiring, and conducts current from a side of the positive-side wiring to a side of the negative-side wiring;
• N+1 discharge paths in parallel, each of which includes a second diode connected between the negative-side wiring, or the negative-side capacitor in kth charge path among the N charge paths, and the positive-side wiring, or the positive-side capacitor in k+1th charge path (k is an integer equal to or larger than 0 and smaller than N) among the N charge paths, and conducts current from the side of the negative-side wiring to the side of the positive-side wiring via at least one of the negative-side capacitor and the positive-side capacitor;
• and
• other charge paths, each of which includes an inductor connected in series with the second diode between the positive-side capacitor in ith charge path (i is an integer equal to or larger than one and equal to or less than N−1) among the N charge paths and the negative-side capacitor in i+1th charge path, and conducts current from the side of the positive-side wiring to the side of the negative-side wiring via the positive-side capacitor in the ith charge path, the second diode, the inductor, and the negative-side capacitor in the i+1th charge path, wherein
• the positive-side capacitor and the negative-side capacitor included in the other charge paths among the positive-side capacitor and the negative-side capacitor in the ith charge path and the i+1th charge path have a larger capacity than each of the positive-side capacitor and the negative-side capacitor which are not included in the other charge paths.