Automatic power factor controller

1
Power Point Of Automatic Power Factor Controller

• Owner - Mr.Raj Kumar Dhawan
• Comp.Name- Green Dot India Pvt.Ltd.
• Source- www.greendotindia.com
• Email-Id info_at_greendotindia.com
• 
  greendotindia._at_hotmail.com
• Address- G-9 Hemkunt Tower
  /Modi Tower,98,
• Nehru
  PlaceNew Delhi 110 019
  

2
AN IDEAL SOLUTION for POWER FACTOR CORRECTION
FIRST TIME IN INDIAThis is 3rd Generation of
Development in the APFC Field.Indian Market
till today was exposed to the SECOND GENERATION
units that areRELAY TYPE akin to RELAY TYPE
STABILISERS in Voltage stabiliser field.This is
SERVO TYPE APFC CONTROLLER CONTINUOUSLY
CORRECTING TYPE.This will upgrade your concept
of POWER FACTOR CORRECTION.THE UNBALANCED TYPE
APFC provides IDEAL CORRECTION to INDIVIDUAL
PHASES .This objective advantage is not
possible from RELAY TYPE Power Factor
Panels.Your new purchase CAN BE IN THIS TYPE OF
Panel. Cost wise competitive.
3
Automatic power FactorController

• AT EXISTING INSTALLATIONS of RELAY TYPE POWER
  FACTOR PANEL installations a SMALL SIZED
  UNBALANCED TYPE UNIT will further correct POWER
  FACTOR of INDIVIDUAL PHASES by correcting PF
  of INDIVIDUAL PHASES from AVERAGE FIGURES of SAY
  0.95-0.97 to 1 thus further saving 3-4 on
  Electricity Bills.SAY ADD 10 KVAR or 20 KVAR
  CONSTANTLY VARIABLE CAPACITORS in INDIVIDUAL
  PHASES.You may call us for FURTHER DETAILS.R K
  Dhawan 9810117725

4
GREEN DOT AUTOMATIC POWER FACTORCONTROLLER

• The innovative character of this APFC controller
  can be best
• understood from the anomaly with the Voltage
  stabiliser
• field.There are three STAGES of development
• in the field of VOLTAGE STABILISERS /VOLTAGE
  REGULATORS.
• The latest is a SERVO TYPE VOLTAGE STABILISER.
• that maintains Voltage of any establishment to
  1 or so accuracies.
• Earlier 1st Stage was when a Voltage
  Regulator of MANUAL ROTARY TYPE was
• used to adjust the voltage as is still being done
  on Voltage regulators for TV etc.
• There is ONE b4,6 or 8 POSITION rotary switch
  that is rotated to adjust output
• voltage. In 2nd stage of this development, RELAY
• PE STABILISERS like those used with Air
  Conditioners etc. came in. There are Steps (
  2,3,4 or 5 ) and we call them in the Regulating
  Transformers that are Switched ON and OFF to keep
  output
• voltage to say 10 or so accuracy.In the 3rd
  Stage the Servo stabilisers came in that
  maintain output voltage accuracy of 1 or so
  by using a Motor
• Driven Variable Transformer .

5

• Green Dot Electric Limited has developed a Variac
  Based Power Factor Panel. A Motorised
• Variable Transformer ( the Motorised Dimmer Dot )
  is used a source of Variable Voltage
• that is applied to the required value of
  Capacitance rated for 440 Volts or so. The
  varying
• voltage applied to the Fixed value
  capacitance-makes the Fixed value Capacitance to
• Continuously Variable capacitance that is used to
  correct the Power Factor without steps.
• There are no switching of Contactors or
  interruption of CAPACITIVE CIRCUITS and thus no
• harmonics get introduced. The costly harmonics
  filters are also avoided. In case the supply
• goes off comes in delay is provided to give
  time for discharge of capacitors and then to
• start again at zero voltage input from the Dimmer
  Dot.

6
Voltage Stabilizer

• There is further advantage in our
• system that the power change is proportional to
  the square of applied voltage to the
• capacitors whereas by comparison to Switching In,
  and or out Capacitors the affect is
• only to the first power of the capacitor size.
• The Power Factor Sensing relay has been developed
  from an advanced Micro Controller that
• senses the existing Power Factor rotates the
  Variable Transformer forward or backward
• increasing or decreasing the output voltage of
  the Variable transformer, to provide required
• voltage across the capacitor so that the adjusted
  the required power factor is always
• maintained with respect to ever varying load of
  the establishment. The LED Read out panel
• of the Relay Box reads Input Voltage adjusted
  Power Factor