ABSTRACT

Base case 939,048 682,889 27% 175,000

With 36m tower 870,135 642,595 26% 164,297

With 30% min. diesel

loading 939,048 810,051 14% 202,811

1999 European Wind Energy Conference, 1-5 March 1999, Nice, France pp907-910

Wind Data

Power Grid Water storage

RO modules Water Demand

water

SEA

Auxiliary Power

For every time interval within a year:

800 n £

-50 0 1000 2000 3000 4000

^ 4 [m3/h]

-?n 0 50 100 150 200 250 300

Wind­ mill

Control Input

Dump Load

Control Input

Electrolyser

Control Input

Voltage and Fre­ quency Control­

ler

Wind­ mill

Control Input

Dump Load

Control Input

Electrolyser

Control Input

Voltage Contro­

ler

3. PHASE I - CONCEPT DESIGN & PRELIMINARY TESTING

The new windpump is innovative in having a form of epicyclic rack transmission mechanism that produces a quasi-constant torque load (combined with speed reduction) which addresses the start-up problems common to conventional crank driven windpumps. Crank-machines demand significantly higher wind speeds for starting than to keep the system running due to the fact that the starting torque requirement is in the order o f 300% o f the mean running torque.