A system and method for compensating for the changing power requirements of an electrical grid. A first generator is mechanically linked to a turbine and electrically linked to a power grid, such that the generator converts rotational energy into electrical energy to supply the power grid. The rotor of the generator is mechanically linked to the rotor of one or more additional generators, not connected to a turbine or the grid, via a continuously variable transmission. The turbine is maintained at optimal running speed. When the generator produces more electrical energy than required by the power grid, mechanical energy from the rotor is transmitted to the rotors of the additional generators. When the power grid requires more energy than generator produces, as the turbine runs at optimal efficiency, mechanical energy from the rotors of the additional generators is transmitted to the rotors of the first generator.

The invention relates to an electric motor equipped with a transmission unit, for example in the form of a planetary gear transmission. The planetary gear transmission has a sun gear, a plurality of planetary gears, and a ring gear, which are coupled to one another via corresponding toothings The sun gear is coupled directly to a shaft of the electric motor and is fastened thereto. The planetary gears or the axles thereof are retained on a bearing plate of the electric motor, such that the transmission unit does not have to provide any additional components for this purpose. In one embodiment of the planetary gear transmission, the ring gear is rotatably mounted on the housing of the electric motor. In an alternative embodiment, the ring gear is fastened to the housing of the electric motor. A common feature of the two embodiments is that the parts of the transmission are retained on the housing of the electric motor, which housing is available in any case, in particular on the bearing plate thereof, and not on a separate housing or another component of the transmission unit.

An electric tool includes an output member, a motor, and a housing. The motor includes a rotor shaft, a rotor core, and a stator component. The rotor shaft is configured to rotate around a first axis. The stator component includes a coil winding. The stator component surrounds the first axis to separate the accommodation cavity into a first space and a second space. The first space includes a first end and a second end. The motor further includes a first end cover and a second end cover. The first end cover is disposed at the first end of the first space. The second end cover is disposed at the second end of the first space. A passage is formed between the second end cover and a structure surrounding the first space, and the passage is configured to place the first space into communication with the second space.

A tubular motor may include a tubular case, a motor unit provided inside the case, and a first planetary gear unit placed inside the case at an output side in the motor shaft direction with respect to the motor unit. On the motor unit, a concave part may be formed in an output side end surface of an output side end plate section that supports a rotor, at an output side of the rotor. On the first planetary gear unit, a planetary carrier may include a supporting plate that overlaps with planetary gears at an counter-output side in order to support the planetary gears from the counter-output side. The first planetary gear unit may be immediately adjacent to the output side end plate section at an output side.

An electrically actuated rotary drive device which has a gear casing with an electrical drive motor mounted at its rear side and on which is rotatably mounted an output member in driving connection with the drive motor. The driving connection is realized by gearing means provided in the gear casing and containing a driven gear fitted to the output member, in the form of a ring gear with internal tooth system, and a drive pinion belonging to the drive motor and with an external gear teeth system. The drive pinion extends into the ring gear, inside the gear casing.

The invention disclosed herein comprises a system focusing water current into a relatively smaller diameter lumen, imparting vortical movement to the current, and directing the water vortex through an even smaller diameter lumen en route to turbine blades having long curved blades rotatable along an axis parallel with the lumen. Rotation of the turbine blades turns gearing interfacing with the circumference of the turbine assembly, to rotate a drive shaft connected to a generator.

A stator assembly for an electric motor includes a drive plate, a first magnetic core and a second magnetic core. A first core slot is formed in the first magnetic core and a second slot is formed in the second magnetic core. The first and second magnetic cores each include two elongated members joined at one end by a base member which are defined by the respective core slots. The two elongated members extend from the base member substantially parallel to each other toward the drive plate. A stator coil is wound through the first core slot and the second core slot. An electrical current flowing in the stator coil generates a magnetic field about the stator coil that is absorbed by the first magnetic core and the second magnetic core to generate a magnetic flux in each of the magnetic cores that magnetically attracts the drive plate.

An induction motor or generator assembly for converting either of an electrical input or rotating work input to a mechanical/rotating work or electrical output. An outer annular arrayed component is rotatable in a first direction and includes a plurality of magnets arranged in a circumferentially extending and inwardly facing fashion according to a first perimeter array, the outer component further incorporating a rotating shaft projecting from a central location. An inner concentrically arrayed and reverse rotating component exhibits a plurality of outwardly facing and circumferentially spaced array of coil-subassemblies opposing the magnetic elements, such that a gap separates the coil-subassemblies from the magnets. The coil sub-assemblies each include a plurality of concentrically arrayed coils configured within a platform support of the inner component. A fixed commutator has a plurality of annular extending and individually insulated segments, a similar plurality of outer rotating brushes in continuous contact with the commutator segments.

The present disclosure discloses an actuator, comprising a first torsion spring body and a second torsion spring body, each of the first torsion spring body and the second torsion spring body comprising: an inner ring; an outer ring; and a plurality of elastic units, connected in parallel between the inner ring and the outer ring. An outer ring of the first torsion spring body and an outer ring of the second torsion spring body are rigidly connected, and an inner ring of the first torsion spring body and an inner ring of the second torsion spring body are aligned with each other. The actuator further includes a motor element and a braking element. The motor element is for providing an output torque, and is connected with the inner ring of the first torsion spring body. The braking element is for providing a braking torque, and is connected with the inner ring of the second torsion spring body.

A transmission apparatus includes a DC motor, a level one transmission assembly, a level two transmission assembly, a level three transmission assembly, and a level four transmission assembly. The DC motor is connected to the level one transmission assembly, to drive the level one transmission assembly to act; the level one transmission assembly drives the level two transmission assembly to act; the level two transmission assembly drives the level three transmission assembly to act; the level three transmission assembly outputs kinetic energy and transforms a vertical motion into a horizontal motion through the level four transmission assembly. The transmission apparatus can output kinetic energy in many directions through a motor. One machine is endowed with a variety of machine functions. An output shaft of DC motor is directly connected to tapered gear, to make the structure more compact. A cook machine with the transmission apparatus is also provided.