DocumentCode :
25854
Title :
Peak Power Shaving of an Electric Injection Molding Machine With Supercapacitors
Author :
Akiyoshi, Hirofumi ; Hiraki, Eiji ; Tanaka, T. ; Okamoto, Mitsuo ; Matsuo, Takuya ; Ochi, Kiyoshi
Author_Institution :
Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Ube, Japan
Volume :
50
Issue :
2
fYear :
2014
fDate :
March-April 2014
Firstpage :
1114
Lastpage :
1120
Abstract :
In this paper, we propose the control method of a peak shaving system for an electric injection molding machine (EIMM). The peak power shaver consists of a multiphase bidirectional dc-dc converter and supercapacitors (SCs), and is connected to a dc link of the inverter fed injection motor drive system of the EIMM. In the proposed control method, electric power is stored in the SCs through the multiphase bidirectional dc-dc converter with a pulsewidth-modulation rectifier while the injection motor is at rest. When the injection motor is accelerating, the stored power in the SCs together with the power from the distribution feeders is supplied to the injection motor. Thus, the peak power can be shaved. The basic principle of the proposed control method is discussed in detail, then confirmed by digital computer simulation and experimental setup. The simulation and experimental results demonstrate that the peak power is shaved by 70% using the peak power shaving system.
Keywords :
DC-DC power convertors; PWM rectifiers; injection moulding; motor drives; moulding equipment; supercapacitors; EIMM; SC; dc link; distribution feeders; electric injection molding machine; inverter fed injection motor drive system; multiphase bidirectional dc-dc converter; peak power shaving system; pulsewidth-modulation rectifier; supercapacitors; AC motors; Acceleration; Capacitors; Converters; Injection molding; Inverters; Pulse width modulation; Energy storage; multiphase bidirectional dc–dc converter; pulsewidth-modulation (PWM) rectifier; supercapacitor (SC); three-phase digital phase-locked loop (PLL);
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2013.2272433
Filename :
6553384
Link To Document :
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