Load controller and method to enhance effective capacity of a photovotaic power supply using a dynamically determined expected peak loading

Patent · Wed Jan 01 00:00:00 EST 2003

OSTI ID:875144

Perez, Richard ^[1]

---

1. Delmar, NY

A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, and comparing the loading against the power output and a load adjustment threshold determined from an expected peak loading. A value for a load adjustment parameter is calculated by subtracting the renewable supply output and the load adjustment parameter from the current load. This value is then employed to control the variable load in an amount proportional to the value of the load control parameter when the parameter is within a predefined range. By so controlling the load, the effective capacity of the non-controllable, renewable power supply is increased without any attempt at operational feedback control of the renewable supply. The expected peak loading of the variable load can be dynamically determined within a defined time interval with reference to variations in the variable load.

• Research Organization: Midwest Research Institute, Kansas City, MO (United States)
• DOE Contract Number: AC36-98GO10337; XAD-8-17671-01
• Assignee: The Research Foundation of State University of New York (Albany, NY)
• Patent Number(s): US 6542791
• Application Number: 09/523,682
• OSTI ID: 875144
• Country of Publication: United States
• Language: English

Related Subjects

load
controller
method
enhance
effective
capacity
photovotaic
power
supply
dynamically
determined
expected
peak
loading
provided
maximizing
non-controllable
renewable
coupled
variable
electrical
conventional
grid
enhanced
monitoring
output
comparing
adjustment
threshold
value
parameter
calculated
subtracting
current
employed
control
amount
proportional
predefined
range
controlling
increased
attempt
operational
feedback
defined
time
interval
reference
variations
power supply
power output
feedback control
/700/307/323/