Protective method of oscillaton water column type wave energy device turbine electric generator set
An oscillating water column type, generator set technology, applied in ocean energy power generation, engine components, machines/engines, etc., can solve the problems of poor power quality, motor loss, energy absorption and conversion efficiency reduction, etc.
Inactive Publication Date: 2008-02-06
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology
Due to frequent changes in turbine speed, the motor frequently switches between generator and motor working states
Moreover, even in the power generation state, the voltage waveform sent out is in the form of sharp pulses, and the power quality is very poor; on the other hand, when the turbine speed is lower than the synchronous speed and the motor is in the motor state, due to the Hard-coupling, the turbine is equivalent to the load of the motor, not only has no output of electric energy, but also consumes various losses of the motor itself, and a turbine load is added
When the generator is in the state, the power quality is poor, and when the motor is in the state, there is an additional load, which reduces the energy absorption and conversion efficiency of the system itself, and even "makes ends meet". This is the fatal problem of most current oscillating water column wave energy utilization systems. Flawed
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[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0012] As shown in the figure: the five parts of turbine 1, elastic coupling 3, friction plate 4, overrunning clutch 5, and motor 2 are all connected coaxially in sequence; turbine 1 receives compressed air from the air chamber, and is pushed by the air Run at high speed to complete the conversion of wave energy→mechanical energy. The elastic coupling 3 runs under the drive of the turbine 1, which has both mechanical energy and elastic potential energy. The friction plate 4 is transmitted from the turbine 1 and the elastic coupling 3 When the speed is too fast and exceeds the set value, slipping will occur, so that the excess energy will be released in this form, while the overrunning clutch 5 will be lower than the speed transmitted by the turbine 1 through the elastic coupling 3 and the friction plate 4. At the synchronous speed of ...
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The invention relates to a wave energy conversion system, especially relates to turbo generating machine protection method by using oscillating water column wave energy conversion system. In the oscillating water column wave energy conversion system, the conversion is completed by the air room, turbo, and electric machine, the relation of the turbo and the machine is coaxial connection, there have not other parts or devices between them, the rotating direction, speed and time and phase of the turbo and the electric machine are consistent totally. Thus the energy absorption conversion efficiency of the system is reduced, which is the main problem of current system. The invention arranges three middle sections between the turbo and the electric machine: buffer energy saving section, safety clutch, and overpass clutch. The method can upgrade the output electric energy quality, at the same time; it can reduce the negative work consumption when the electric machine is in motor state.
Description
technical field [0001] The invention relates to a wave energy conversion system, in particular to a protection method for a turbine generating set used in an oscillating water column wave energy conversion system. Background technique [0002] Usually, in an oscillating water column (OWC) wave energy conversion system, the conversion of wave energy→mechanical energy→electric energy is completed by the air chamber, turbine, and motor. The relationship between the turbine and the motor is a coaxial connection, and there is no other For equipment or components, the rotation direction, speed, time and phase of the turbine and the motor are completely consistent. At the same time, in terms of the use of motors, due to the particularity of wave energy, the turbine speed changes greatly, and considering the transmission of electric energy, asynchronous motors are usually used to complete the conversion of mechanical energy to electric energy. The characteristic of the asynchronous...
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IPC IPC(8): H02H7/06
CPCF03B13/142Y02E10/30
Inventor 马玉久游亚戈颜希文吴必军
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI