An energy conversion device may include a shaft including a first portion and a second portion wherein the first portion of the shaft is configured to rotate relative to the second portion of the shaft. A rotor may be coupled to the first portion of the shaft and a stator may be coupled to the second portion of the shaft. A first one-way bearing may be coupled to the first portion of the shaft and configured to transfer rotational input to the first portion of the shaft in a first direction. A second one-way bearing may be coupled to the second portion of the shaft and configured to transfer rotational input to the second portion of the shaft in a second direction opposite the first direction.

A quench protection system for a superconducting machine, such as a superconducting generator having a plurality of series-arranged superconducting coils, includes at least one switch heater electrically coupled to each of the superconducting coils. A quench protection switch is provided in series with the coils, wherein each switch heater is in thermal contact with the quench protection switch. A heater network is configured in parallel with the quench protection switch and is in thermal contact with each of the coils. A quench of any one of the coils triggers a quench of the quench protection switch, wherein the heater network then triggers a quench of all of the remaining coils.

A vertical wind turbine includes a shroud for directing vehicle-created wind towards the turbine blades, which are oriented in response to wind direction.

The Vertical Tilting Blade Turbine Windmill device is for capturing kinetic energy from the wind and is comprised of a vertical shaft having a central hub connectively attached, the central hub having a plurality of wind capture arms comprising a rotating wind capture blade having a capture surface and a slicing edge that are rotated wherein the wind capture blades are rotated between a blade mode to capture the wind and a knife mode to pass with less drag resistance through the air/wind thereby enabling an increase in the ability to capture more of the energy available in an on-coming wind stream.

Proposed is a wind turbine having a vertical axis rotor mounted in a fixed cylindrical housing provided with outwardly opening shutters. The rotor consists of a rotating core comprising core blades fastened between two circular bases and forming a Ugrinsky rotor, and an annular impeller configured for independent rotation about said core. The impeller comprises impeller blades fastened between two ring-shaped bases and forming a continuation of the core blades, wherein common inter-blade channels are formed which narrow toward the centre of the rotor. Also proposed are wind power stations based on the wind turbines described above, said turbines being mounted vertically one above the other to form a generating tower, or being mounted on a facade of a high-rise building. Technical result consists, in particular, in increasing the efficiency of the wind turbine and making it possible to incorporate wind power stations into an urban environment.

A magnetic pole module, an electric motor rotor and a method for manufacturing the electric motor rotor are provided. The electric motor rotor includes a rotor yoke and multiple magnetic pole modules disposed on the rotor yoke, each of the magnetic pole modules including a base plate, a housing, and a pair of magnetic pole units that are accommodated in an accommodating space formed by the base plate and the housing and have opposite polarities, and a pair of magnetic pole units in each of the magnetic pole modules are spaced apart from each other by a first distance in a circumferential direction of the rotor yoke. The electric motor rotor can give consideration to the properties, such as cogging torque and torque pulsation, of a generator, the protection of magnetic poles and the mechanical fixation of the magnetic pole.

The present disclosure relates to an apparatus (10) for wind power generation comprising at least one primary wind duct (12); at least one secondary wind duct (14); at least one pressure-balancing and guiding unit (14); at least one primary blade unit (20); at least one booster and generator unit (22); at least one secondary blade unit (24); and at least one extractor (26). Characteristically, a counter-rotating motion is created between the primary blade unit (20), the secondary blade unit (24) and the components of the booster and generator unit (22), which causes an increase in the velocity of the wind flowing through the apparatus (10) and a resultant increase in the impact of the high velocity wind on the blades; further amplifying the self-reinforcing effect occurring at each stage of the apparatus (10).

Provided is a method for controlling an active rectifier connected to a stator of a wind power installation using field-oriented control. The generator comprises a stator having an axis of rotation around which the rotor is mounted. The method includes predefining rotor-fixed d and q coordinates for at least one 3-phase stator current of the generator and determining at least one alternating component for the rotor-fixed d and/or q coordinate depending on a detected amplitude and detected phase position of an electrical power oscillation on the generator and taking account of a rotor position representing a mechanical position of the rotor in relation to the stator. The method includes adding the alternating component for the rotor-fixed d and/or q coordinate to the rotor-fixed d and/or q coordinate to form a modified d and/or q coordinate, and controlling the active rectifier at least depending on the modified d and/or q coordinate.

An electrical machine is provided including a stator with a stator core, a plurality of stator teeth protruding radially from the stator core, and a plurality of stator coils, wherein each stator coil is wound around at least one stator tooth of the stator and includes at least one coil head protruding in axial direction beyond the stator core, wherein the stator includes a stator extension structure with a plurality of magnetic flux-guiding extension segments each protruding axially from a stator tooth into an area surrounded by at least one of the coil heads.

A wind power generation device includes a rotor assembly and a stator. The rotor assembly includes a rotating member, a first magnetic module, and a second magnetic module the latter two of which are fixed on the rotating member. The rotating member has a column and a spiral blade connected to the column. The first and second magnetic modules are arranged outside the spiral blade and face each other. The rotor assembly defines an annular gap formed around the spiral blade and between the first and second magnetic modules. The stator assembly includes a frame, a positioning member connected to the frame, and an induction module fixed on the positioning member and arranged in the annular gap. The spiral blade can rotate the rotator assembly relative to the stator assembly by wind, so that a region between the first and second magnetic module sweeps over the induction module.