Research On Permanent Magnet Linear Generator In Small-sized Thermoacoustics System And Operation

With the ever-increasing human demand for energy, the energy crisis can be considered today. Research, development and use in new energy must be imperative.The technologies of thermoacoustic power generation can make use of solar energy,industrial waste heat as well as any heat generated by fuel combustion to work,So thermoacoustic engine is becoming a driving force of energy research in the field of a cutting-edge technology.Thermoacoustic engine is the devices which transform the sound energy into mechanical.Its biggest feature is simple structure, no moving parts,high reliability and environmental friendly,highlighting the advantages of using it driven linear generator can be made completely without moving parts with high reliability thermoacoustic generator has important application potential, so it has important theoretical and practical significance.With the birth of permanent magnetic materials, permanent magnet linear motor performance has been greatly improved. The issue by a new type of permanent magnet linear generator used in thermal acoustic field, a free piston permanent magnet linear generator as a thermoacoustic oscillator generating system of load constitute the cascade power generation systems, allowing power generation can range from very small to very great.Linear motor there is a common problem, and that is positioned with the problem, which is the application of a linear motor is one major drawback. article in the analysis of positioning force calculation method, to change the magnetic pole arrangement of the structure to reduce the force and power fluctuations in position to improve the performance of the generator in the paper, the whole thermoacoustic power system dynamic equations, by analyzing the dynamic characteristics of the entire system, examining the drive frequency, load resistance and the piston diameter on the generator performance. Finally, the paper introduces the power of the system post-processing program, through the control circuit to complete the electrical energy storage.