| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the number of inverters, to miniaturize a crane, to improve a power factor and to apply automatic regenerative control between motors by inserting and connecting a battery charger and a battery on a path transmitting electric energy to a traveling motor and a fork lifting motor of a stacker crane. SOLUTION: A traveling motor 1 and a fork lifting motor 2 are fitted to a stacker crane, and DC/AC converters 3, 4 are connected to both motors respectively. A battery charger 6 installed on the fixed side of the ground side is connected to an AC power supply 5, a battery 7 is connected to the battery charger 6, and the DC/AC converters 3, 4 are connected to the battery via duct shoes respectively.</p> |
