1. Effects Of Voltage
Op0miza0on

2. Presenta0on Outline
1. Legend Power Introduc0on
2. What is Voltage Op0miza0on
• Conserva0on Voltage Regula0on
3. Electrical Harmonizer‐AVR Technology
4. Effects On Ligh0ng Loads
5. Effects On Motor Loads
6. Facility Audit
7. Measurement & Verifica0on
8. Case Study – Honda Canada
9. Conclusion

3. Legend Power
Introduc0on
• Legend Power is Energy Conserva0on
Company
• Target Commercial & Light Industrial
• Completed R&D in January 2009
• Completed 20+ pilot project in BC, Ontario
and California
• Dr. William Dunford – CTO and inventor of the
AVR
• Mark Petersen – P.Eng, Lead Engineer

4. Energy Waste From High Voltage
• U0li0es cannot effec0vely regulate voltage on the en0re grid
• Some buildings receive voltage at higher levels than others
• High voltage results in:
– energy waste
– larger energy bills
– unnecessary GHG emissions
126 Volts
Electrical Harmonizer
118 Volts
‐ AVR
Power Power Voltage
Genera6on Distribu6on Op6miza6on Customer

5. What is Voltage Op0miza0on
Conserva0on Voltage Regula0on
• Due to line loss resistance building receive higher voltage at
the beginning of the electrical grid
• Voltage Op0miza0on or Conserva0on Voltage Regula0on,
regulates incoming voltage to the lower op0mal level
126 Volts 114 Volts

6. What is Voltage Op0miza0on
Conserva0on Voltage Regula0on
• All Electrical Equipment is design to operate
+/‐ 5% of rated value
• Voltage op0miza0on ensures equipment is opera0ng
near the lower limit
• Reduce Energy Consump0on by 6‐10%
• Real Power Reduc0on ‐ kW
• Reac0ve Power Reduc0on KVar
• Energy Consump0on Reduc0on kWh
• Increase the life of Electrical Equipment
• Science World doubled life expectancy of exterior bulbs

7. Electrical Harmonizer‐AVR Technology
Harmonizer
• Harmonizer = Autotransformer
– 2%, 4%, 6% taps
– 99.98% Efficient
• Can be installed before the
meter
– 30 Year life expectancy
– 300,000 installed in Japan

8. Electrical Harmonizer‐AVR Technology
Automa0c Voltage Regulator
• AVR – Automa0c Voltage Regulator
– Electronic Tap Selector
– U0lizes zero crossing detec0on to minimize transients
• Reduces harmonic content
– Rated for 1000 Amps @ 600 Volts
– Includes failsafe bypass to ensure uninterrupted power to
load

9. Effects on Resis0ve Loads
• Hea0ng and Ligh0ng Loads
• Average power can easily be controlled via the
voltage, irrespec0ve of the waveform
• Instantaneous electrical power consump0on = voltage
squared
• Resistor temperature changes slower than voltage
• Hea0ng Loads
• Many are thermosta0cally controlled
• Peak power will be reduced
• Average power will remain unchanged

10. Effects on Resis0ve Loads
Ligh0ng Loads
• Responsive Ligh0ng Loads:
• Incandescent
• T8 and T12 Fluorescent
• Compact Fluorescent
• Metal Halide
• High Pressure Sodium
• Front End Regulated Ballast
• Electronically regulated loads do not respond to voltage
op0miza0on

11. Effects on Motor Loads
• Real power ‐ kW
• Mechanical output
• iron and copper losses
• Reac0ve power drawn to maintain the
magne0c flux ‐ kVar
• Power factor
• Harmonics
• Effects of voltage op0miza0on is complex

12. Effects on Motor Loads
• Nameplate condi0ons do not represent the
most efficient point for motor opera0on
• higher voltage results in:
• Increased reac0ve power demand
• Increased harmonic current flow.
• Increased losses in the iron core
• Overall motor efficiency and power factor are
usually increased by reducing the motor
voltage to its rated value or below

13. Facility Audit
1. Billing Review
2. Facility Walkthrough
3. Voltage Op0miza0on
Simula0on
4. Power Quality Analysis
5. Proposal Delivery

14. Installa0on & Commissioning
• Typically one day to rough in and install
• Less than three hours of down0me
• AVR can be hot swapped to avoid down0me during
any required maintenance

15. Measurement & Verifica0on
• Instantaneous effects of voltage change can easily be
measured
• Sooware installed in the AVR forces a tap change
• executed every 30 minutes for one week
• 48 samples per day for one week
• Measurements are taken before and aoer each tap change
• kWh for the week determined by summing the 30
minute samples which will yield the actual kWh used
and the kWh which would have been used without
the AVR

16. Case Study
Honda Canada
Facility Profile Results
• 45% Ligh0ng • Annual kWh Savings: 76,271
• Average kW Reduc0on: 8.73
• 40% Motor & HVAC
• Percent Savings: 5.98%
• 10% Office Equipment
• Annual Dollar Savings: $4,400 ($8,800 Ontario)
• 5% Bapery Chargers • Op0mized Voltage : 575 Volts
• Average Voltage : 610 Volts

17. Conclusion
Book An Audit:
If you think your facility might be a good
candidate, we can help you do some of the
preliminary inves0ga0ons.
Book Now:
www.legendpower.com/energy‐audit/