Omni M-VAWT is built upon and modified from Original M-VAWT to be omni directional to wind. Original M-VAWT, or Original Multi Axes-Vertical Axis Wind Turbine, is documented in U.S. Pat. No. 10,473,087 Patent granted on Nov. 12, 2019. Omni M-VAWT has significant improvements on power generation performances by having a new planet airfoil rotation and alignment assembly, a modified airfoil assembly, and the removal of Original M-VAWT mechanisms for orienting and pointing its planet airfoils persistently forward facing toward the wind. The new planet airfoil rotation and alignment assembly rotates planet airfoils fully extended and folded in rotations around their planet rotating shafts, either passively or actively within rotation limits. A modified airfoil assembly has particular modifications to shapes and sizes and rotation centers for paired planet and sun airfoils. Omni M-VAWT remains environmentally friendly to flying birds.

A caliper brake featuring a hydraulic piston assembly includes a housing, a movable piston within a chamber of the housing, a first port providing a first fluid pathway into the chamber, and a redundant seal assembly. The redundant seal assembly may include a first pressure seal disposed about a first interior circumference of the chamber disposed above the first port, a second pressure seal disposed about a second interior circumference of the chamber disposed above the first pressure seal, and a second port disposed between the first pressure seal and the second pressure seal, the second port providing a second fluid pathway from inside of the chamber to outside of the chamber, and the second port establishing a bleed-off for fluid traversing above the first pressure seal such that the second pressure seal experiences a lower fluid pressure than the first pressure seal during normal operation of the caliper brake.

A caliper brake featuring a hydraulic piston assembly includes a housing, a movable piston within a chamber of the housing, a first port providing a first fluid pathway into the chamber, and a redundant seal assembly. The redundant seal assembly may include a first pressure seal disposed about a first interior circumference of the chamber disposed above the first port, a second pressure seal disposed about a second interior circumference of the chamber disposed above the first pressure seal, and a second port disposed between the first pressure seal and the second pressure seal, the second port providing a second fluid pathway from inside of the chamber to outside of the chamber, and the second port establishing a bleed-off for fluid traversing above the first pressure seal such that the second pressure seal experiences a lower fluid pressure than the first pressure seal during normal operation of the caliper brake.

A method is provided for braking a rotor of a wind turbine. The rotor comprises rotor blades. The wind turbine comprises a pitch adjustment system for adjusting a pitch of the rotor blades. The method comprises detecting a system failure of the pitch adjustment system, estimating a current wind speed, estimating an available brake torque and estimating a required brake torque, based on the estimated current wind speed. The method further comprises determining a suitable point in time for activating a rotor brake based on the estimated available brake torque and the estimated required brake torque. The rotor brake is then activated at the determined suitable point in time.

An orthogonal turbine having a first blade, a second blade, a first traverse connected to the first blade, a second traverse connected to the second blade, a first speed adjusting member having a first void, a first rear stop, and a first front stop, a second speed adjusting member, a disc having a first pin connected to the disc, and a shaft connected to the disc, where the shaft is configured to rotationally engage the first speed adjusting member and the shaft is configured to rotationally engage the second speed adjusting member, where the first speed adjusting member is connected to the first traverse, where the second speed adjusting member is connected to the second traverse, where the first speed adjusting member is rotationally engaged to the second speed adjusting member, and where the first void is configured to receive the first pin.

A yaw system for a wind turbine can have a yaw bearing with an outer bearing ring, an inner bearing ring, and a plurality of yaw rollers rotationally disposed between the outer and inner bearing rings so as to allow relative motion between the outer and inner bearing rings. A bi-directional braking assembly having an outer clutch ring attached to the outer bearing ring, an inner clutch ring attached to the inner bearing ring, and a plurality of brake rollers rotationally and slidably disposed between the inner clutch ring and at least one locking ramp adjacent the outer clutch ring. A plurality of spring members can extend from either ring projections or activation projections to each brake roller. An activation ring can slidably position the plurality of brake rollers into one of a locked position or unlocked position to prevent yaw rotation in an undesired direction.

Provided are a yaw brake pad and a method of producing the same, which relate to the technical field of friction material. The yaw brake pad is prepared from, by weight, the following main ingredients: 70-75 parts of polyether ether ketone, 10-20 parts of carbon fiber, 3-5 parts of glass fiber and 3-5 of graphite. It alleviates the technical problem that the metal-based friction materials generally for producing current international and domestic yaw brake pads are likely to rust, harmful to dual discs, and produce screechy. It has not only significantly improved mechanical properties and high temperature tolerance, much lower hardness, less wear to dual discs, and lower noise, but also improved friction stability and adaptability to working conditions, and thus can effectively satisfy the demand of the wind driven generator for yaw braking at a low speed.

The present invention provides a hydraulic drive train including a check valve provided in a return oil passage disposed between a branching position of a first branching oil passage and a branching position of a second branching oil passage, wherein at the time of starting of startup of the hydraulic drive train, the switching valve is closed, the opening degree of the flow rate adjusting valve is set to the initial opening degree, the on-off valve is opened, the boost pump is driven by the drive motor, and the hydraulic oil is supplied to the hydraulic pump, thereby assisting the rotational speed of the vanes by the hydraulic oil.

The first aspect of the present invention is a speed-controlling transmission or apparatus. In a non-limiting example, the speed-controlling transmission or apparatus is adapted for use with driving, driven or energy-related devices, apparatuses or systems. The second aspect of the present invention is a wind turbine apparatus that comprises a wind turbine and a speed-controlling transmission or apparatus. A non-limiting example of a wind turbine includes a mandrel, a plurality of supporting arms or trusses, and a plurality of umbrella-like vanes. The wind turbine is adapted for rotating in a generally circular orientation with respect to the vertical axis of a turbine-receiving structure during operation wherein the circular orientation is generally parallel to a ground surface.

A system includes a wind turbine having a fixed part and a rotational part and a brake having a brake disk mounted to the rotational part for rotation with the rotational part. At least one brake block is fixed relative to the fixed part and has a friction surface facing the brake disk. The brake block is shiftable between a first position with the friction surface spaced from the brake disk and a second position with the friction surface in contact with and pressed against the brake disk, and the friction surface and/or the brake disk are configured such that pressing the at least one brake block against the brake disk creates a micro-interference fit between the at least one brake block and the brake disk.