(2) Transfer function G 2 has a small phase angle ahead. \G 2 % arctan C p ap 0 =V c ,
the larger the nozzle area a, the closer the phase angle to 90°. On the other
hand, it makes the impedance mismatch system worse.
(3) The system gain G 1 G 2
j
jis quite small, so the conversion efficiency will not be
very high.
(4) OWC air system also causes some problems. Although the air system effectively prolongs the life of the system, it also brings difficulties to the
improvement of the energy conversion system.
14.4 Experimental Technique of Oscillatory Water
Column Wave Energy Converter
How to verify the working principle of the oscillating water column power generation device and obtain the influence of various parameters on the characteristics
of the oscillating water column power generation device is very important.
Generally, the wave energy simulation system of oscillating water column in static
pool is adopted.
14.4.1 Test Model
As shown in Fig. 14.9, a set of active oscillating water column wave energy
conversion simulation test device for a still pool is constructed by Guangzhou
Institute of Energy, Chinese Academy of Sciences. The device consists of static
Electric machinery
Turbogenerator set
Gas chamber
Oscillation
Airflow
Water
column
Oscillation
Fig. 14.9 Working principle
of wave energy conversion
simulator
14.3 Mathematical Model of Oscillating Water Column
365
the larger the nozzle area a, the closer the phase angle to 90°. On the other
hand, it makes the impedance mismatch system worse.
(3) The system gain G 1 G 2
j
jis quite small, so the conversion efficiency will not be
very high.
(4) OWC air system also causes some problems. Although the air system effectively prolongs the life of the system, it also brings difficulties to the
improvement of the energy conversion system.
14.4 Experimental Technique of Oscillatory Water
Column Wave Energy Converter
How to verify the working principle of the oscillating water column power generation device and obtain the influence of various parameters on the characteristics
of the oscillating water column power generation device is very important.
Generally, the wave energy simulation system of oscillating water column in static
pool is adopted.
14.4.1 Test Model
As shown in Fig. 14.9, a set of active oscillating water column wave energy
conversion simulation test device for a still pool is constructed by Guangzhou
Institute of Energy, Chinese Academy of Sciences. The device consists of static
Electric machinery
Turbogenerator set
Gas chamber
Oscillation
Airflow
Water
column
Oscillation
Fig. 14.9 Working principle
of wave energy conversion
simulator
14.3 Mathematical Model of Oscillating Water Column
365