Grid-connected system and method of thermo-acoustic generator set

A technology of generator set and thermoacoustic engine, which is applied in the direction of single-grid parallel feeding arrangement, etc., can solve problems such as power loss, and achieve the effect of reducing power loss, avoiding inverter, and solving difficulties in grid connection.

Active Publication Date: 2019-10-25
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a grid-connected system and method of a thermoacoustic generating set, which is used to solve the defect in the prior art that the electric energy is lost through inversion, and realizes that the thermoacoustic generating set does not need inverter Can be connected to the grid

Method used

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  • Grid-connected system and method of thermo-acoustic generator set
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  • Grid-connected system and method of thermo-acoustic generator set

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Embodiment 1

[0019] This embodiment provides a grid-connected system of a thermoacoustic generating set, and its structural diagram is as follows figure 1 As shown, the grid-connected system includes: a phase-locking device 10, a signal amplifier 9, a thermoacoustic generator set A and an access switch 11, one input end of the phase-locking device 10 is connected to the power grid B, and the output end of the phase-locking device 10 is connected to The input end of the signal amplifier 9 is connected, the output end of the signal amplifier 9 is connected to the input end of the thermoacoustic generator set A, the output end of the thermoacoustic generator set A is connected to the grid B, and the output end of the thermoacoustic generator set A is connected to the grid B There is an access switch 11 between them, and the other input end of the phase-locking device 10 is connected between the output end of the thermoacoustic generator set A and the access switch 11, so that the phase-locking...

Embodiment 2

[0023] Based on Embodiment 1, this embodiment provides a specific grid-connected system of thermoacoustic generator sets, and its specific structure is as follows figure 2 As shown, the thermoacoustic generator set A includes multiple sets of thermoacoustic engines connected in series between the compressor piston 1 and the generator piston 6, and each set of thermoacoustic engines is coupled through an ejector 5, and the thermoacoustic engines include sequential The secondary connected main water cooler 2 , regenerator 3 and heater 4 , the main water cooler 2 is connected with the compressor piston 1 , and the thermoacoustic generator set A also includes a permanent magnet 7 and a coil 8 connected with the generator piston 6 .

[0024] The piston 1 of the compressor moves repeatedly under the drive of the external voltage and compresses the gas inside the unit to generate oscillating sound waves. The mechanical energy of the engine is multiplied and input to the next-stage e...

Embodiment 3

[0026] Based on Embodiment 1, this embodiment provides another grid-connected system of a thermoacoustic generating set, the schematic diagram of which is shown in image 3 As shown, the thermoacoustic generator set A includes multiple sets of thermoacoustic engines connected in series between the compressor piston 1 and the generator piston 6, and the resonance between each set of thermoacoustic engines is formed by the mass piston 14 and the resonant spring 13 The sub-components are coupled, and the thermoacoustic engine includes a main water cooler 2, a regenerator 3, a heater 4 and a secondary water cooler 12 connected in sequence, the main water cooler 2 is connected to the compressor piston 1, and the secondary water cooler 12 is connected to the heater Between 4 and the resonant spring 13, the thermoacoustic generator set A further includes a permanent magnet 7 and a coil 8 connected to the generator piston 6.

[0027] Among them, the harmonic oscillator component can r...

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Abstract

The embodiment of the invention provides a grid-connected system and method of a thermo-acoustic generator set. The grid-connected system comprises a phase locking device, a signal amplifier, the thermo-acoustic generator set and an access switch; one input end of the phase locking device is connected with a power grid; the output end of the phase locking device is connected with the input end ofthe signal amplifier; the output end of the signal amplifier is connected with the input end of the thermo-acoustic generator set; the output end of the thermo-acoustic generator set is connected intoa power grid; the access switch is arranged between the output end of the thermo-acoustic generator set and the power grid; the other input end of the phase locking device is connected between the output end of the thermo-acoustic generator set and the access switch. The output of the thermo-acoustic generator set is controlled through the phase locking device and the signal amplifier, so that the output is matched with the amplitude, phase and frequency of a power grid voltage and the output power of the thermo-acoustic generator set is directly connected into a public power grid, thereby avoiding the inversion process, reducing the loss of electric energy, solving the problem of difficulty in grid connection, and promoting the development of the thermo-acoustic power generation technology.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of thermoacoustic power generation, and in particular to a grid-connected system and method for thermoacoustic generating sets. Background technique [0002] A thermoacoustic engine refers to a device that generates mechanical power from heat through the thermoacoustic effect, where the thermoacoustic effect is a physical phenomenon in which heat causes acoustic self-excited oscillation in an elastic medium (usually a high-pressure inert gas). The thermoacoustic engine converts low-grade thermal energy into mechanical energy in the form of sound pressure waves, and then converts it into electrical energy by a linear oscillating motor (as an acoustic-electric conversion device), forming a thermoacoustic generator. Multiple sets of thermoacoustic engines are connected in series between compressor generators to form a thermoacoustic generator set. The thermoacoustic generator set can real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/44H02J3/42
CPCH02J3/42H02J3/44
Inventor 胡剑英孙岩雷罗二仓张丽敏罗开琦胡江风
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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