| 摘要 |
An engine drives a generator, the electricity generated by the generator is stored in a power storage circuit, and a work-use electric motor is driven by electricity supplied from the power storage circuit. The work-use electric motor causes an upper rotating body to rotate. The power storage circuit has a power storage device and multiple buck-boost converters which are parallel-connected to each other. Each buck-boost converter contains a switching element and a reactor. Induced electromotive force is generated in the reactors by the switching of the switching elements, thereby boosting the voltage of the power storage device, which is then supplied to the work-use electric motor. |
