Electricity is made or generated in different
ways.
Can you think of some?
Use
Gas
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energy to generate electric power …..
Oil
Coal
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So, what we need ….
Michael Faraday 1791-1867
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What do we need to make a generator for a p
ower station?
Strong magnets
Lots of wire
then lots of
energy
to turn the generator
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Source: M.J. Moran et. al Introduction to Thermal Systems Engineering
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Pressurized Water
Reactor [PWR]
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Boiling Water Reactor
[BWR]
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Source: G.G. Karady & K.E. Holbert, Electrical Energy
Conversion and Transport
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Ocean energy power plant




Ocean Wave
Ocean Current
Ocean Tides
Ocean Thermal
Source: www.youtube.com
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 Currents: large movement of
water in one direction
 Waves: located on the ocean
’s surface are commonly cau
sed by wind transferring its e
nergy to the water
 Tides: actually waves, the bi
ggest waves on the planet, a
nd they cause the sea to rise
and fall along the shore arou
nd the world
Source : http://ocean.si.edu/
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Motion
Motion of
of the
the Oceans
Oceans
Source: www.youtube.com
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




Point absorbers
Overtopping devices
Oscillating water columns
Attenuators capture
Inverted pendulum
Source: https://hub.globalccsi
nstitute.com
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Source: www.youtube.com
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to obtain maximum efficiency because of ir
regularity
problem of coupling irregular slow motion
very high loading in the case of extreme w
eather
Source: M. P. Kazmierkowski &M. Jasiński, Power Electronic Grid-Interface for
Renewable Ocean Wave Energy
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Source: M. P. Kazmierkowski &M. Jasiński, Power Electronic Grid-Interface for
Renewable Ocean Wave Energy
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Source: www.youtube.com
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 Tidal and ocean current
turbines can look quite similar
and have the same operating
principles.
 However,
several
key
differences can significantly
alter the size, operational
control, and mooring of the
devices.
 Ocean current turbines operate
in relatively steady, lower
velocity
flows
that
are
unidirectional,
fluctuate
seasonally, and can be far from
shore in deeper water, as has
already been discussed
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Source: https://hub.globalccsi
nstitute.com
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Source: www.youtube.com
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•
•
•
•
•
•
•
•
•
•
Clean and green
Renewable and reliable
Worldwide potential
Efficient energy production
Can be built offshore
Low operation costs
Minimum visual impact
No fuel cost
No pollution
Size advantage
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 Unpredictability
 Ecological Impact
 Noise and Visual Pollut
ion
 Hazard to Boats
 High cost of installatio
n and maintenance cos
ts.
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Source: S. Bala et. al., Power Conversion Systems for Tidal Power Arrays
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• Renewable
• Minimum
environment impacts
• Fresh water
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Costly
Specific location
requirement
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Source: F. Blaabjerg& K. Ma, Future on Power Electronics for Wind Turbine
Systems
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Source: www.youtube.com
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Source: F. Blaabjerg& K. Ma, Future on Power Electronics for Wind Turbine
Systems
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Source: Z. Chen, et. al., A Review of the State of the Art of Power
Electronics for Wind Turbines
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Source: Z. Chen, et. al., A Review of the State of the Art of Power Electronic
s for Wind Turbines
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 The stator of a doubly fed induction generator (DFIG)
Source: Z. Chen, et. al., A Review of the State of the Art of Power
Electronics for Wind Turbines
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Source: www.youtube.com
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• Clean
• Renewable
• Cost effective
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 Wind reliability
 Threat to wildlife
 Noise and visual
pollution
 Expensive to set up
 Safety to people
 Suitable to certain
location
 Environmental effect
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Thank You