Title:
INVERTER DEVICE, CONTROL METHOD OF THE SAME, AND SHIELD MACHINE USING THE CONTROL METHOD AND THE INVERTER DEVICE
Document Type and Number:
Japanese Patent JP2013158214
Kind Code:
A
Abstract:
To provide an inverter device capable of starting up a load in a short time while achieving circuit protection.
An inverter device 100 controls a plurality of induction motors 504, each driving a single load. Each of inverter units 102 is provided at the respective induction motors 504 and supplies an AC driving current to the corresponding induction motor 504. Each of the plurality of inverter units 102 sets the frequency of an AC driving current during a predetermined creep period (1), and then increases the frequency of the driving current from the starting frequency to the frequency at the time of normal operation (2), when the induction motors 504 are started.
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Inventors:
YUASA HIDEAKI
Application Number:
JP2012019018A
Publication Date:
August 15, 2013
Filing Date:
January 31, 2012
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES
International Classes:
H02P5/74; H02P1/56
Attorney, Agent or Firm:
Sakaki Morishita
Yusuke Murata
Tomoyuki Miki
Tomisho Teruo
Yusuke Murata
Tomoyuki Miki
Tomisho Teruo