Linear Alternator with Reciprocating Mover: Review of Designs and Machine Types

DOI : http://dx.doi.org/10.13005/bbra/2218

Download this article as: 

Linear motors and alternators with reciprocating mover are theoretically known for a long time, but in last 10-15 years one can find several new practical applications of such machines, which are actively discussed in research papers. Such applications are as follows: direct-drive wave energy conversion, active suspension system for damping car oscillations and also embedded linear electric machines in external combustion engines (Stirling engine) and internal combustion engines with freepiston. The latter application utilizes linear electric machines in both generator mode for supplying electric power to battery and drive mode for piston motion control. At that, modern arrangements use different types and designs of linear electric machines, which are the main subject of current review.

Linear alternator; Linear electric machine; Linear permanent magnet machine