SMALL-SIZED GEOTHERMAL POWER GENERATION SYSTEM

To obtain a small-sized geothermal power generation system which can secure high quality, and furthermore can be reduced in cost and weight compared to conventional technique.SOLUTION: A small-sized geothermal power generation system comprises: an evaporator that warms a working medium by a heat source to turn the working medium into vapor; an expander that is rotated by the working medium that has become vapor; a condenser that liquefies again the working medium that has become vapor ; a pump that feeds the working medium that has been again liquefied to the evaporator; a power generator that converts a rotational energy of the expander into an electric energy; a storage battery that stores a DC power generated by the power generator; and a power generation control controller that adjusts load of the power generator to control the number of rotations of the power generator. The power generator is constituted by an in-car magnetic winding type three-phase synchronization power generator incorporated with a rectifier.SELECTED DRAWING: Figure 1 【課題】高品質を確保しながら、従来技術と比較してコスト削減が図れ、質量も削減できる小型地熱発電システムを得る。【解決手段】熱源により作動媒体を暖めて蒸気にする蒸発器と、蒸気となった作動媒体によって回転させられる膨張機と、蒸気となった作動媒体を再度液体に戻す凝縮器と、再度液体に戻った作動媒体を蒸発器に送り込むポンプと、膨張機の回転エネルギーを電気エネルギーに変換する発電機と、発電機で発電した直流電力を蓄電する蓄電池と、発電機の負荷を調整して発電機の回転数を制御する発電制御コントローラと、を備え、発電機は、整流器が内蔵された車載用界磁巻線型三相同期発電機で構成される。【選択図】図１