CA2257794A1 - A method and an apparatus for filtering an electric current supplied to a motor - Google Patents

A method and an apparatus for filtering an electric current supplied to a motor

Info

Publication number
CA2257794A1
CA2257794A1 CA002257794A CA2257794A CA2257794A1 CA 2257794 A1 CA2257794 A1 CA 2257794A1 CA 002257794 A CA002257794 A CA 002257794A CA 2257794 A CA2257794 A CA 2257794A CA 2257794 A1 CA2257794 A1 CA 2257794A1
Authority
CA
Canada
Prior art keywords
motor
current supplied
filtering
electric current
frequency transformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002257794A
Other languages
French (fr)
Other versions
CA2257794C (en
Inventor
Juha Pyrhonen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Switch Electrical Machines Oy
Original Assignee
Alamaki, Jarmo
Juha Pyrhonen
Rotatek Finland Oy
The Switch Electrical Machines Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FI962485A external-priority patent/FI114665B/en
Application filed by Alamaki, Jarmo, Juha Pyrhonen, Rotatek Finland Oy, The Switch Electrical Machines Oy filed Critical Alamaki, Jarmo
Publication of CA2257794A1 publication Critical patent/CA2257794A1/en
Application granted granted Critical
Publication of CA2257794C publication Critical patent/CA2257794C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

The present invention relates to a method and an apparatus for filtering an electric current supplied to a motor (M). A current supplied from a frequency transformer means (4) provided with a voltage source circuit to the motor (M) is conducted through a coil means (L) between the frequency transformer means (4) and the motor (M) for preventing any essential rapid increases of the current. The reactive current portion of the motor (M) is compensated by a condenser means (C) arranged between the frequency transformer means (4) provided with the voltage source circuit and the motor (M). By means of the inventive filter the reactive current of the motor (M) is essentially compensated and the power ratio thereof is increased.
CA002257794A 1996-06-14 1997-06-13 A method and an apparatus for filtering an electric current supplied to a motor Expired - Fee Related CA2257794C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI962485 1996-06-14
FI962485A FI114665B (en) 1996-06-14 1996-06-14 Motor Events
PCT/FI1997/000377 WO1997048174A1 (en) 1996-06-14 1997-06-13 A method and an apparatus for filtering an electric current supplied to a motor

Publications (2)

Publication Number Publication Date
CA2257794A1 true CA2257794A1 (en) 1997-12-18
CA2257794C CA2257794C (en) 2006-04-11

Family

ID=36178206

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002257794A Expired - Fee Related CA2257794C (en) 1996-06-14 1997-06-13 A method and an apparatus for filtering an electric current supplied to a motor

Country Status (1)

Country Link
CA (1) CA2257794C (en)

Also Published As

Publication number Publication date
CA2257794C (en) 2006-04-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170613