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1. (WO2013146204) EXCAVATOR AND EXCAVATOR CAPACITOR VOLTAGE CONTROL METHOD

Pub. No.:    WO/2013/146204    International Application No.:    PCT/JP2013/056540
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 09 00:59:59 CET 2013
IPC: E02F 9/20
Applicants: SUMITOMO HEAVY INDUSTRIES, LTD.
住友重機械工業株式会社
Inventors: KATSUTA, Naoko
勝田 直子
Title: EXCAVATOR AND EXCAVATOR CAPACITOR VOLTAGE CONTROL METHOD
Abstract:
An excavator has an electric motor (71), an inverter (20C) connected to the electric motor, and an electricity storage device (120) connected to the inverter and including a capacitor (19). While driving of an engine (11) is being suspended, the voltage of the capacitor (19) is maintained higher than a second predetermined voltage value.