The present invention includes a drive system for use in a flowing fluid, the drive system preferably having a first turbine connected to a shaft, a first gear connected to the shaft, a second turbine rotatably mounted on a pipe, a second gear rotatably mounted on the pipe and connected to the second turbine, and two or more satellite gears in fixed locations relative to the pipe and rotatably engaged, directly or indirectly, with the first gear and the second gear. The drive system may be used, for example, in a wind generator to generate electrical energy.