TW200603518A - Linear motor (Ⅱ) - Google Patents

Linear motor (Ⅱ)

Info

Publication number
TW200603518A
TW200603518A TW094124119A TW94124119A TW200603518A TW 200603518 A TW200603518 A TW 200603518A TW 094124119 A TW094124119 A TW 094124119A TW 94124119 A TW94124119 A TW 94124119A TW 200603518 A TW200603518 A TW 200603518A
Authority
TW
Taiwan
Prior art keywords
linear motor
resonant frequency
control strategy
maximum displacement
current
Prior art date
Application number
TW094124119A
Other languages
Chinese (zh)
Inventor
John H Boyd Jr
Gerald David Duncan
Original Assignee
Fisher & Paykel
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
Application filed by Fisher & Paykel filed Critical Fisher & Paykel
Priority to TW094124119A priority Critical patent/TW200603518A/en
Publication of TW200603518A publication Critical patent/TW200603518A/en

Links

Landscapes

  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The present invention provides an improved design of linear motor as welt as an improved control strategy. The design allows for a shorted stator, where the armature magnets are controlled to reciprocate to a greater maximum displacement than for a equivalent conventional linear motor. The control strategy is such that a minimum of external sensors are required. The linear motor is driven at its resonant frequency ensuring optimally efficient operation. A determination of the maximum current is made based on a relationship with the resonant frequency and the evaporating temperature/pressure of the vapour entering the compressor. The current is then limited to control the maximum displacement to avoid damage.
TW094124119A 2000-09-28 2000-09-28 Linear motor (Ⅱ) TW200603518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW094124119A TW200603518A (en) 2000-09-28 2000-09-28 Linear motor (Ⅱ)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW094124119A TW200603518A (en) 2000-09-28 2000-09-28 Linear motor (Ⅱ)

Publications (1)

Publication Number Publication Date
TW200603518A true TW200603518A (en) 2006-01-16

Family

ID=57807053

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094124119A TW200603518A (en) 2000-09-28 2000-09-28 Linear motor (Ⅱ)

Country Status (1)

Country Link
TW (1) TW200603518A (en)

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