Thermoacoustic Stirling engine – which is the right generator ?

In this video I show you the improvements of the TASLiCE Thermoacoustic Stirling engine. The power is now high enough to choose the right generator concept to eventually produce useful energy to support our solar plant in winter to go off grid.
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The experiments with my thermoacoustic Stirling engine are leading to higher and higher performances.The development of the engine is still in its beginning and I haven't tried out many optimization possibilities yet. My aim is to generate some measurable electrical power to get a fast comparison for improvements.It is therefore necessary to choose a generator concept that can be used as flexibly as possible to study the interaction with the acoustic circuit.The heat exchangers are designed for much higher temperatures and working gas pressures, but much modification and experimentation is still required before they can be fully used. Improved active cooling and a much larger working cylinder with a cast iron piston have dramatically improved performance. For the first time it was possible to experiment successfully with piston damping. There is also huge potential for optimization in terms of inertance and compliance. With the performance achieved here, it is now finally possible to drive a generator.A linear generator is a very elegant way of generating electrical energy.Making a linear generator with good efficiency is quite complex, is using an off-the-shelf linear motor an option?Can sufficient electromagnetic attenuation be achieved or do additional mechanical components such as springs need to be provided?Is it possible to start the later closed pressurized motor with the linear generator without extensive control engineering?I could really use your help on these questions, so please write your suggestions and help in the comments or on Discord.Using a loudspeaker is a simple solution, and with a signal generator and amplifier it should be possible to start the engine. The selection of the speaker, which has its own frequency and must be in tune with the Stirling engine, is something I have no experience of. This probably makes the loudspeaker concept inflexible, so I would be very happy to get your help here.My self designed and 3D printed bidirectional impulse turbine is also a very elegant and low-maintenance option, but not so well suited for the first series of tests due to its less flexible setting options. I will apply the turbine from time to time, however I will not seriously develop that concept until really usable, higher performance is achieved. The classic push crank mechanism offers the greatest flexibility for different settings and is very easy to set up. The stroke can be changed quickly and electric motors with different characteristics can be used. Starting the closed Stirling engine is also no problem. However, this option is not very elegant with its many moving parts and it takes up a lot of space, which is unfavourable when the engine is closed and under pressure.Which generator concept do you think offers the most advantages for the upcoming optimizations?As always, I'd love to hear your opinions, suggestions, help and criticism in the comments or on Discord.Thanks for watching!

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