The turbine is driven because of the stream of oil sent to it by the pump. The oil enters the blade portion close to the rim and passes in the blades. The complete assembly is contained and connected to the engine flywheel. The stator has an extremely intense blade structure https://travismbmwf.onesmablog.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-torque-converter-clutch-74601629