| 摘要 |
<p>The present invention couples one end of an A phase coil (18a) to between two diodes (31a, 31b) of a first half-bridge (32a), couples one end of a B phase coil (18b) to between two diodes (31a, 31b) of a third half-bridge (32c), couples the other ends of the A phase coil (18a) and the B phase coil (18b) to between two diodes (31a, 31b) of a second half-bridge (32b), and provides a switching element (33) in order to change the state of connection of the A phase coil (18a) and the B phase coil (18b) so as to be in series or in parallel by changing the switching element (33) to on or off.</p> |
