Wave compensation technology is crucial to the safety of the ship operation and the accurate placement of load. Its compensation efficiency and the gentle change of the rope tension are particularly important. In this paper. we adopt permanent magnet synchronous machine (PMSM) as the actuator to construct the basic wave compensation system. https://safeersappliancers.shop/product-category/zanussi-zunn18fs1-integrated-frost-free-upright-freezer/