A linear synchronous motor-based gravitational potential energy storage system includes mass cars moving along an inclined plane between a lower and upper storage yard. The system comprises tracks guiding the mass cars, with linear synchronous motors positioned along the tracks. Electromagnetic coils interact with permanent magnets that move with the mass cars to produce a linear force. A synchronization mechanism aligns the motors with the electrical grid. Switches control electricity flow to the coils, and an electrical busbar distributes power. A cooling system manages heat. The motors draw electrical energy from the grid to move the mass cars upward, storing potential energy, and convert potential energy into electrical energy as the mass cars descend, feeding the generated energy back into the grid.

This invention introduces a kinetic energy recovery wind-wave integrated system for offshore wind power generation. The system consists of a semi-submersible platform equipped with a fan and an internal wave energy device. The device includes a shell housing a Power Take-Off (PTO) system, featuring a permanent magnet synchronous linear motor and an active controller. The motor's stator is fixed inside the shell, while its mover is connected to a counterweight block outside the stator, linked to the shell's top via a spring. Limiters are installed at both ends of the shell to restrict the counterweight block's movement. This system utilizes the wave energy device to absorb kinetic energy, which otherwise affects wind turbine stability, and converts it into usable electrical energy via the PTO system. This enhances the stability and safety of offshore wind turbine power generation.