24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(12) PATENT APPLICATION PUBLICATION
(19)
INDIA (21) Application No: 1094/MUM/2001 A
(22) Date of filing of Application
:19/11/2001
(54) Title of the invention:
(51) International Classification:
(31) Priority Document No. : NIL
(32) Priority Date :
(33) Name of priority country :
(86)
(43) Publication Date: 24/06/2005
HIGH POWER FACTOR FUSE PROTECTED PHASE
CONTROLLED.
NIL
NIL
International Application : NIL
No. and Filing Date :
NIL
(87) International :
Publication No.
NIL
(61) Patent of addition to
Application No. : NIL
Filed on N.A.
(62)
Divisional to
Application No. : NIL
Filed on : N.A.
(57) Abstract : A high power factor fuse protected phase
controlled converter
(1) comprising a rectifier bridge (2) of SCRs (T1, T2 ) and
diodes (D2, D2 ) connected to a single phase AC supply (S2 )
through an input filter inductor (L1) capacitor
(C1)configuration and fuse (F). a free wheeling diode (D3)
and an output filter inductor (L2) and capacitor (C2)
configuration are connected across the rectifier bridge. A load
® is connected across the output filter capacitor. A control
circuit 5 comprises a dual output trigger generator (6), a pulse
width modulated signal generator (7), a voltage comparator
(8), a triangular wave generator (9), a switching frequency
controller (10), an error amplifier (11), a turn off trigger
generator (12), a transistor Q1, a high frequency voltage
transformer (XT), a pair of diodes (D4,D5), a resistance (R1)
and diode (D6) configuration and a diode D7. V1 and V2 are
single-phase reference AC voltage and reference DC voltage,
respectively.
Total Pages : 25
(71)
(72)
Name of the Applicant:
INDIAN INSTI TUTE OF
TECHNOLOGY
Address of the Applicant:
BOMBAY, POWAI,
MUMBAI 400076,
MAHARASHTRA,
INDIA .
Name of the Inventors:
1. DR. VICTOR PRINCE
SUNDARSINGH
2. NARAYAN SHET.
Filed U/S 5(2) before the
Patents (Amendment)
Ordinance,2004 : NO
( Figure: 1 )
The Patent Office Journal 24.06.2005 17754