Peak power shaving of an electric injection molding machine with supercapacitors

Hirofumi Akiyoshi, Eiji Hiraki, Toshihiko Tanaka, Masayuki Okamoto, Tadayoshi Matsuo, Kiyoshi Ochi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

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 PWM 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.

Original languageEnglish
Title of host publication2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
Pages2590-2595
Number of pages6
DOIs
Publication statusPublished - Dec 17 2012
Externally publishedYes
Event4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh, NC, United States
Duration: Sep 15 2012Sep 20 2012

Publication series

Name2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012

Other

Other4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012
Country/TerritoryUnited States
CityRaleigh, NC
Period9/15/129/20/12

Keywords

  • Energy storage
  • Multiphase bidirectional dc-dc converter
  • PWM rectifier
  • Supercapacitor (SC)
  • Three-phase digital PLL

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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