Wind turbine power

Electrolyzers are generally current-controlled, which means that a certain DC is imposed according to the desired hydrogen production. In a wind-hydrogen system, the wind turbine power available for the operation of the electrolyzer is generally known therefore, the power input should be transformed to a current input. The voltage-current relation of an electrolyzer is not very simple because it depends on the temperature, pressure, and other construction characteristics. For a given electrolyzer, it is possible to experimentally establish the I-V curve at different temperatures and pressures, and deduce a temperature-dependent current-power curve. 

The form of a wind turbine power curve is shown in Figure 2.2. The wind turbine starts producing electricity when wind speed exceeds the cut-in threshold. From that point up to the nominal wind speed, power increases proportionally to the cube of wind speed. For higher wind speeds, power is kept close to the nominal value due to the blades aerodynamic design (passive stall control). Alternatively, a... 

Assume high pressure electrolysis cell with drastically lower capital cost of mass production cost higher efficiency Assume no transmission or distributions cost for the wind turbine power which usually adds 0,02-,04/kWh Assumed oxygen recovery for by-product sales with large central plant case, but only minor economic impact... 

Note Solar PV subside is equivalent to /tonne C02 avoided assuming the wind turbine power ... 

There are a number of weaknesses with this configuration, namely a redundancy of power electronics leading to increased cost and potential for failure. The inability to match wind turbine power output to electrolyzer power requirements because of separate power electronic controllers ultimately results in reduced energy capture. 

The wind turbine power Mohawk is using translates into 4-million kilowatt hours of power, enough for 12,000 tons of paper production. Community Energy officials said this move would help remove more than 6.1 million pounds of carbon dioxide from the air the equivalent of talcing more than 300 cars off the road each year. These wind plants use many wind turbines, often assembled on a large singe wind site called a wind farm, to produce electricity. 

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