GB1183701A - Improvements in or relating to Power Converters - Google Patents

Improvements in or relating to Power Converters

Info

Publication number
GB1183701A
GB1183701A GB662066A GB662066A GB1183701A GB 1183701 A GB1183701 A GB 1183701A GB 662066 A GB662066 A GB 662066A GB 662066 A GB662066 A GB 662066A GB 1183701 A GB1183701 A GB 1183701A
Authority
GB
United Kingdom
Prior art keywords
signal
switching
terminals
pair
inductor
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.)
Expired
Application number
GB662066A
Inventor
Raymond John Dennis Reeves
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB662066A priority Critical patent/GB1183701A/en
Publication of GB1183701A publication Critical patent/GB1183701A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

1,183,701. Converting. PLESSEY CO. Ltd. 28 April, 1967 [15 Feb., 1966], No. 6620/66. Heading H2F. [Also in Division G3] A power converter comprises: a pair of input terminals arranged to have an alternating current signal Vac applied thereto; a filter including an inductor L1 connected in series between the input and output thereof, one end of the inductor being connected to one of said input terminals; a further pair of terminals having a capacitor Cr connected thereacross; and switching means comprising solid state switching devices Q1, Q2 each having a switching signal applied to a control electrode thereof, for selectively applying the filtered signal afforded by the other end of the inductor to the further pair of terminals, the magnitude and polarity of the signal appearing across the further pair of terminals being dependent upon the phase difference between said alternating current signal and the switching signal applied to the switching means to effect switching thereof. In one embodiment, Fig. 15, the switching signals for the devices Q1, Q2 are derived from an oscillator formed by saturable transformer T2 and transistors Q3, Q4. In order to regulate the D.C. power developed across capacitor Cr, the voltage and current are sensed by resistors R2, R3 which apply signals to comparator circuits Q6, Q7 -and Q8, Q10 which provides a control signal to vary the frequency of the oscillator. A further control dependent on the A.C. is also applied to transistors Q1, Q2 via transformer T3. The converter circuit may be modified by employing two pair of opposite conductivity transistors, Fig. 10 (not shown) or to use thyristors Figs. 13, 16, 17 (not shown). In the last mentioned circuit the firing point control is provided by a magnetic amplifier. Ripple is reduced by means of an amplifier, Fig. 20 (not shown) which senses the ripple component present at the D.C. part and provides a corresponding antiphase signal which is connected in series with the reservoir capacitor.
GB662066A 1966-02-15 1966-02-15 Improvements in or relating to Power Converters Expired GB1183701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB662066A GB1183701A (en) 1966-02-15 1966-02-15 Improvements in or relating to Power Converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB662066A GB1183701A (en) 1966-02-15 1966-02-15 Improvements in or relating to Power Converters

Publications (1)

Publication Number Publication Date
GB1183701A true GB1183701A (en) 1970-03-11

Family

ID=9817794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB662066A Expired GB1183701A (en) 1966-02-15 1966-02-15 Improvements in or relating to Power Converters

Country Status (1)

Country Link
GB (1) GB1183701A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees