166results about "Association for rectification" patented technology

A fracturing apparatus includes a motor, a first plunger pump, a power supply platform, a gas turbine engine, a generator, and one or more rectifiers. At least two of the gas turbine engine, the generator, and the one or more rectifiers are arranged on the power supply platform. A first end of the generator is connected to the gas turbine engine. A second end of the generator is connected to the one or more rectifiers. The generator is configured to output a voltage to the one or more rectifiers. The one or more rectifiers are configured to provide power to the motor. The motor is configured to drive the first plunger pump.

Disclosed are a non-contact rotary transformer and a motor comprising same. A non-contact rotary transformer according to the present invention is a device for connecting a rotor of a motor with an external power source in a non-contact manner, and is characterized by comprising: a core part disposed inside a hollow motor shaft in a coaxial structure with the motor shaft; a primary coil part installed on the outer circumferential surface of the core part; a secondary coil part which is installed on an inner main surface of the motor shaft and surrounds the primary coil part at a predetermined interval (air gap) therefrom; and a rectifier circuit part which is coupled to the motor shaft and rotates in synchronization therewith, and which is electrically connected to the secondary coil part.

The invention discloses a rotor bracket structure of a multi-phase outer pivot brushless exciter, belongs to the field of brushless exciters, and aims to solve the problem that screws for fixing balancing weights of a rotor bracket of an existing multi-phase outer pivot brushless exciter are loosened and fall off. The large balance weight groove is composed of a first groove opening part and a first groove bottom, the width of the large balance weight is matched with the width of the first groove bottom, the first jacking screw comprises a first screw rod part and a first cap head part which are axially connected, and the diameter of the first cap head part is smaller than the width of the first groove bottom and larger than the width of the first groove opening part. The large balancing weight is in threaded fit with the first screw rod part, when the large balancing weight is fixed, the first jacking screw is screwed, so that the first cap part is far away from the large balancing weight, the large balancing weight jacks the bottom surface of the bottom of the first groove, and the first cap part jacks the top surface of the bottom of the first groove. The positions of the large balancing weight and the small balancing weight can be adjusted smoothly, and screws for fixing the large balancing weight and the small balancing weight can be prevented from loosening and falling off.

A drive unit assembly includes a motor having: a motor housing; a shaft extending through the motor housing; a rotor coupled to the shaft; a stator arranged around the rotor; and one or more motor busbars communicatively coupled to the stator. The drive unit assembly further includes a filter having: a filter housing coupled to the motor housing; one or more filter busbars, each filter busbar having an inlet and an outlet configured to communicatively coupled to at least one of the one or more motor busbars; a printed circuit board (PCB) communicatively coupled to the one or more filter busbars; and one or more dissipative components coupled to the PCB.

A rotary transformer is disclosed herein comprising a stationary portion and a rotating portion. The stationary portion includes a transformer housing, a primary coil positioned within the transformer housing and defining a central axis, and a stationary printed circuit board (PCB). The stationary PCB includes an excitation coil of an inductive position sensor and at least one sensing coil of the inductive position sensor. The rotating portion of the rotary transformer includes a rotating PCB with a secondary coil of the rotary transformer positioned on the rotating PCB. The rotating portion further includes a diode holder connected to the rotating PCB. The diode holder includes at least one target for the inductive position sensor.

The invention relates to the technical field of high-speed generators, and discloses a double-three-phase fractional-slot winding carbon fiber reinforced high-speed generator and a design method.The double-three-phase fractional-slot winding carbon fiber reinforced high-speed generator comprises a permanent magnet synchronous motor, the permanent magnet synchronous motor adopts a double-three-phase winding surface-mounted topology and fractional-slot distribution winding, and a carbon fiber bundle is arranged on the surface of a rotor; the stator winding adopts a split transposition structure and is internally provided with an oil duct; and the controllable rectification controller adopts a three-phase two-level main power conversion topology and comprises a control circuit of a dual-digital signal processor redundancy architecture, a driving circuit of a multi-level driving architecture and a three-phase full-bridge silicon carbide main power circuit adaptive to a high-voltage multi-level topology. By adopting the dual three-phase fractional slot winding surface-mounted permanent magnet synchronous motor topology and cooperating with the split transposition winding structure, the winding circulation loss is reduced, the fault-tolerant capability is improved, and the rotor is bundled and reinforced by carbon fiber wires to counteract the high-speed rotation centrifugal force.

A turbomachine (1100) includes a housing (1118) and a rotating group that is supported for rotation about an axis of rotation (1104) within the housing. The turbomachine also includes a turbomachine stage including a wheel of the rotating group supported within a turbomachine housing of the housing. The turbomachine further includes an e-machine section including an e-machine (1114) that is housed within an e-machine housing of the housing. The e-machine is operably coupled to the rotating group and configured to operate as at least one of a motor and a generator. Moreover, the turbomachine includes an integrated controller (1150) that extends in a circumferential direction about the axis of rotation. The integrated controller is configured for controlling the e-machine. Additionally, the turbomachine includes a thermally decoupled fastener arrangement (1158) that attaches the integrated controller to the e-machine housing. The fastener arrangement thermally decouples the integrated controller from the turbomachine stage.

The utility model belongs to rectifier technical field especially is concerned about a kind of synchronous rectification module for generator low pressure high power.Technology includes two rectification modules, and diode is installed on rectification module, and the upper end of rectification module is fixed with first boss, and rectification module is first rectification module and second rectification module, and lower end is hinged together by hinging piece;First boss is provided with through-hole, and eccentric cam clamping rod is equipped in through-hole, and the clamping rod left end of eccentric cam clamping rod sequentially passes two first bosses from the right side of through-hole;Nut is threadedly connected on the clamping rod of first boss left side;The clamping rod of first boss right side is equipped with eccentric cam that can rotate left and right.Eccentric cam rotates left and right around camshaft and clamps first boss, so that first rectification module and second rectification module can be quickly installed and disassembled from the rotating shaft of generator, and diode and other components on rectification module are conveniently replaced and maintained.

The utility model relates to the technical field of generators, and discloses an outer rotor generator structure for a rowing machine and an exercise bicycle, which comprises a rear protective cover, a stator body is arranged in the rear protective cover, the left end of the rear protective cover is connected with a front cover PCB (printed circuit board) in a clamping manner, and a bracket is arranged at a through hole in the front cover PCB; a bearing is installed in the support, a rotor body is installed in the bearing, and a magnet is installed outside the support. According to the utility model, the functions of the rectification circuit board are respectively transferred to the front cover PCB and the upper controller of the generator, so that the rectification circuit board is reduced, the cost can be greatly optimized, the product reliability is improved, the assembly wires are reduced, the cost is reduced, and the sealing structure is formed between the front cover PCB and the rear protection cover. And the problems of noise or jamming and the like caused by falling of foreign matters due to a gap between the stator and the rotor are prevented.

Provided is a controller having high workability (assemblability and maintainability). The controller is provided with: a housing provided with a bottom panel; a power supply circuit board provided with a first connector and disposed on the bottom panel; a system circuit board provided with a second connector, the system circuit board and the power supply circuit board being arranged in a direction along the bottom panel and disposed on the bottom panel; and a first cable connecting the first connector and the second connector, the first connector being disposed along a side of the power supply circuit board facing the system circuit board, and the second connector being disposed along a side of the system circuit board facing the power supply circuit board. The first connector and the second connector are disposed so as to be offset in a second direction orthogonal to a first direction in which the power supply circuit board and the system circuit board are arranged.

To provide a motor compressor capable of easily securing dumping resistance when a large current is input to a common-mode choke coil.SOLUTION: A motor compressor comprises a noise reduction unit 50 that reduces both common-mode noise and normal-mode noise. The noise reduction unit 50 includes: a common-mode choke coil 51 for reducing common-mode noise; and a magnetic damping unit 55 for reducing normal-mode noise. The common-mode choke coil 51 includes: an annular core 60; a first winding 61 wound around the core 60; and a second winding 62 wound around the core 60 and arranged aside the first winding 61 with a gap therebetween. The magnetic damping part 55 is formed of a plate-shaped magnetic material. Eddy currents are generated in the magnetic damping unit 55 due to a leakage magnetic flux leaking from the core 60. The noise reduction unit 50 includes a plurality of magnetic damping units 55. The plurality of magnetic damping units 55 are stacked with insulation layers 73 therebetween.SELECTED DRAWING: Figure 5

The invention discloses a wave energy and ocean current energy integrated power generation device, and relates to the technical field of power generation devices. The power output end of the ocean current energy capturing mechanism is connected with the first rotating part to drive the first rotating part to rotate; the mechanical motion rectifying mechanism comprises a reciprocating lifting part, a rotary output part and a motion rectifying structure, and the motion rectifying structure is connected with the reciprocating lifting part and the rotary output part and can convert lifting bidirectional power of the reciprocating lifting part into rotary power of the rotary output part; the rotation output part is connected with the second rotation part and can drive the second rotation part to rotate in the direction opposite to the rotation direction of the first rotation part. And the floating output end of the wave energy capturing mechanism is connected with the reciprocating lifting part. The wave energy power generation device and the ocean current energy power generation device can be coupled together, the effect of adding the rotating speed of the power generator is achieved, and then the energy utilization rate is increased.

A vehicle is provided that includes a traction motor. The traction motor includes a direct current capacitor (DC capacitor) and a printed power circuit board (power PCB) that converts the direct current power (DC power) received by the DC capacitor into alternating current power (AC power). The traction motor also includes a stator with windings. The traction motor further includes a first phase connection, a second phase connection, and a third phase connection arranged between the power PCB or power module and the stator windings. The first, second, and third phase connections provide an electrical connection between the power PCB or power module and the stator windings and are arranged in a triangular configuration to supply AC power to the stator windings.The traction motor also includes a triangular AC choke that encloses the first phase connection, the second phase connection and the third phase connection in the triangular configuration.

The invention discloses a brushless direct current generator rectifier fault detection system and a protection method, and belongs to the technical field of aviation power supply systems. Comprising a direct-current generator, a generator controller, a direct-current main feeder line, a direct-current contactor, a direct-current bus bar and a storage battery, the invention includes a main contactor that opens the generator output in response to generator rectifier short circuit protection. A traditional mode of detecting pulsating voltage after rectification and filtering is adopted, and under the condition that a single diode of a rectifier is open-circuited, pulsating voltage conversion is not obvious due to filtering, and a generator controller cannot accurately judge faults. According to the invention, the second rectifying circuit is added, so that the pulsating voltage before filtering of the generator is detected, the defects are overcome, the amplitude of the pulsating voltage can be accurately detected, faults such as open circuit and short circuit can be accurately identified, and the safety of the system and the aircraft is improved.

Some embodiments provide irrigation generator systems that include a main conduit comprising an inlet conduit and an outlet conduit; a flow control system positioned within the main conduit; a generator conduit comprising a generator inlet conduit and a generator outlet conduit, wherein the generator inlet conduit is fluidly coupled with the main conduit upstream of the flow control system, the generator outlet conduit is fluidly coupled with the main conduit downstream of the flow control system; and a generator comprising a rotor assembly cooperated with generator conduit to be physically activated by a flow of fluid through the generator conduit causing rotation of the rotor assembly and generates electrical power. The flow control system transitions between a closed state to the open state in response to a water pressure exceeding a pressure threshold.

A heating, ventilation, and air conditioning (HVAC) system includes a blower assembly including a blower motor; and an electronically commutated motor (ECM) controller in electrical communication with the blower motor, the ECM controller including: a rectifier electrically connected to an alternating current (AC) input source, the rectifier being configured to receive AC electricity from the AC input source and convert the AC electricity to direct current (DC) electricity; a DC electrical circuit including a first DC electrical circuit loop and a second DC electrical circuit loop, the rectifier being configured to circulate the DC electricity through the DC electrical circuit; and a relay located within the first DC electrical circuit loop, the relay being configured to open to break the first DC electrical circuit loop and close to complete the first DC electrical circuit loop in order to reduce standby power consumption of the ECM controller.

A system and method for selective activation and deactivation of electrical brushes used in a dynamoelectric machine for current density optimization is disclosed. The approach includes using an arrangement of switches electrically connected to the electrical brushes to selectively activate and deactivate the brushes during the operation of the dynamoelectric machine. This entails opening and closing selective ones of the switches for a predetermined time period to adjust the average current density of the electrical current passing through the electrical brushes to be within a predetermined current density range while the dynamoelectric machine is operating.

The present invention discloses an inertia gear flywheel generator set, comprising a gear flywheel inertia generator, wherein the input end of the gear flywheel inertia generator is connected to an engine, and the output end of the gear flywheel inertia generator is connected to a generator. The gear flywheel inertia generator comprises a housing, with an input shaft and an output shaft rotatably mounted on both sides of the housing, the inner end of the input shaft being connected to an input gear, the inner end of the output shaft being connected to an output gear, an input inertia gear flywheel and an output inertia gear flywheel rotatably mounted within the housing, the input inertia gear flywheel meshing with the input gear, the output inertia gear flywheel meshing with the output gear, and the output inertia gear flywheel coaxially connected to a transition gear. The beneficial effect is that the inertia of the input inertia gear flywheel and the output inertia gear flywheel can be used to increase the rotational speed and torque, thereby improving the power generation efficiency of the generator, reducing energy loss, and increasing energy utilization, resulting in a good use effect.

A controller includes a housing including a bottom surface panel, a power supply circuit substrate including a first connector, disposed on the bottom surface panel, a system circuit substrate including a second connector, disposed on the bottom surface panel by being aligned with the power supply circuit substrate in a direction along the bottom surface panel, and a first cable coupled to the first connector and the second connector. The first connector is disposed along a side of the power supply circuit substrate which faces the system circuit substrate. The second connector is disposed along a side of the system circuit substrate which faces the power supply circuit substrate. The first connector and the second connector are disposed to be shifted in a second direction orthogonal to a first direction in which the power supply circuit substrate and the system circuit substrate are aligned.

A stator defines multiple stator poles with associated stator windings. A rotor defines multiple rotor poles with associated rotor windings configured to be energized substantially by the stator. The rotor defines a rotor field energizable by magnetic fields produced by the stator windings to produce relative force between the rotor and the stator. An active rectifier is conductively coupled to one or more first rotor windings. The active rectifier is configured to control a direction of current flow through the one or more first rotor windings responsive to a signal received wirelessly from the stator by one or more second rotor windings.

The invention discloses a generator rectifying device which comprises a rectifying device and a generator, the rectifying device comprises a rectifying module, a centrifugal fan and a shaft connector, the centrifugal fan comprises an impeller, an impeller shaft, a first end plate and a second end plate, and the first end plate and the second end plate are connected through a plurality of supporting columns to form a centrifugal fan shell. The impeller is coaxially installed between the first end plate and the second end plate, the impeller shaft is coaxially and integrally arranged on the side, close to the first end plate, of the impeller, and the end, away from the impeller, of the impeller shaft penetrates through the first end plate and is coaxially connected with a generator rotor rotating shaft through a shaft connector. The two rectification modules are installed on the side, away from the first end plate, of the second end plate of the centrifugal fan in a mirroring mode, and when a rotor of the generator rotates, the centrifugal fan conducts heat dissipation on the generator and the rectification modules at the same time. The centrifugal fan is arranged on the rectifier module, so that the aim of performing air-cooling heat dissipation on the rectifier module and the generator at the same time is fulfilled.

This invention discloses an integrated wave energy and ocean current energy power generation device, relating to the field of power generation device technology. It includes a power generation mechanism comprising a rotating part one and a rotating part two; an ocean current energy capture mechanism, the power output end of which is connected to the rotating part one to drive its rotation; a mechanical motion rectification mechanism, comprising a reciprocating lifting part, a rotating output part, and a motion rectification structure, the motion rectification structure connecting the reciprocating lifting part and the rotating output part, capable of converting the bidirectional lifting power of the reciprocating lifting part into the rotational power of the rotating output part; the rotating output part is connected to the rotating part two, capable of driving the rotating part two to rotate in the opposite direction to the rotation of the rotating part one; and a wave energy capture mechanism, the floating output end of which is connected to the reciprocating lifting part. This invention couples a wave energy power generation device and an ocean current energy power generation device together, effectively summing the generator speeds, thereby improving energy utilization efficiency.

Assembly for wheel motor Assembly (1) comprising a reduction gear (10) for wheel motor and a motor (20), the reduction gear (10) comprising a reduction gear housing (12) defining an internal enclosure (I), an output hub (16) supported relative to the reduction gear housing (12) by a bearing (18), an input member (32A) and a reduction stage (30A, 30B) arranged in the internal enclosure (I) and coupling the input member (32A) and the output hub (16) modifying the torque and speed ratio between the latter, the input member (32A) and the output hub (16) being rotatable about an axial direction (X), the motor (20) comprises a motor housing (22) and a motor shaft (24) coupled to the input member (32A), the motor housing (22) being fixed to the reduction gear housing (12) such that at one axial end (12a) of the reducer (10), the internal enclosure (I) is closed by the motor (20). Figure for the abstract: Fig. 1.

The present invention relates to a rectifier for an electric motor. The rectifier has a housing with a housing frame and a housing cover, a phase current busbar for contacting the phase windings of the electric motor, a magnetic flux guiding element made of ferromagnetic material having a back and two arms, wherein the phase current busbar is arranged between the two arms of the magnetic flux guiding element. In addition, the rectifier has a Hall element, which is arranged between the two arms of the magnetic flux guiding element, the Hall element is used to detect the magnetic field caused by the current flowing through the phase current busbar, and the rectifier has a circuit base, and the Hall element is fixed on the circuit base. It is hereby stipulated that the magnetic flux guiding element is at least partially integrated into the housing frame or the housing cover.

Modular power generation system, consisting of at least one miniature three-phase generator, mountable on a wheel or hub for generating electrical energy through wheel or hub rotation for the autonomous power supply of batteries and mobile devices. Power generation system comprising at least one mechanically driven power source, an electronic processing unit, and an output unit for supplying external devices, characterized in that the power source is a rotating generator and the processing unit comprises a rectifier, a DC-DC converter, and a USB output.

The application discloses an automatic variable-speed motor and a control method thereof, which comprises a motor shell, a motor stator, a motor rotor, a rectifier transformer module and a contactor module. The motor stator is embedded with multiple groups of symmetrical three-phase power windings and a group of power generation windings; the terminals of the multiple groups of three-phase power windings are respectively connected to the normally open or normally closed contact points of the contactor module; the other ends of the normally open or normally closed contact points of the contactor module are connected to three-phase lead-out wires; the three-phase lead-out wires are connected to the output ends of a motor controller or directly connected to a three-phase power supply; the power generation windings are connected to the input ends of the rectifier transformer module; and the output ends of the rectifier transformer module are connected to the control ends of the contactor module. The number of turns of the power generation windings can be changed to adjust the output voltage of the power generation windings at different rotating speeds; the voltage output characteristics of the rectifier transformer module are set to control the contact point action of the contactor module, the series-parallel connection of the motor windings at different rotating speeds is realized, and the automatic variable-speed purpose is achieved.

An electrical machine comprising a rotatable shaft; an induction generator mechanically coupled to the rotatable shaft and defining a power output connectable with an electrical load, wherein the power output defines a desired constant voltage output; a converter electrically connected with the power output; and a controller connected to the converter, the controller configured to at least one of provide supplemental power at the power output or absorb excess power at the power output.

The utility model provides a waveform rectification comparator, a Hall motor and a ripple motor, and relates to the technical field of motors, the waveform rectification comparator comprises an operational amplifier, the reverse input end of the operational amplifier is connected with the waveform input end of the rectification comparator and power supply voltage through a first voltage division circuit; the positive input end of the operational amplifier is connected with the power supply voltage through the second voltage division circuit, the output end of the operational amplifier serves as the output end of the rectification comparator, and the power supply end of the operational amplifier is connected with the power supply; and the voltage limiting circuit is connected with the reverse input end of the operational amplifier. The beneficial effects are that square waves / ripples output by the Hall motor / ripple motor are rectified and converted into standard square waves, so that the standard square waves form standard square wave signals to be identified by a single-chip microcomputer.

The invention relates to the technical field of aviation generators, in particular to an aviation high-voltage direct-current power generation mechanism type variable output rectifying device which is composed of three sets of rectifier diodes, each set of rectifier diodes is formed by laminating two rectifier diodes, and after lamination, the rectifier diodes are fixed through screws and nuts. A wiring board is arranged between the two laminated rectifier diodes, a wiring lug and a positioning lug are arranged on the wiring board, the wiring lug is used for connecting three-phase alternating current, and a screw rod penetrates through the positioning lug and is used for circumferential positioning; the three groups of rectifier diodes are connected with the upper confluence plate and the lower confluence plate so as to output direct current outwards; an upper supporting plate and a lower supporting plate are respectively arranged on the outer sides of the upper confluence plate and the lower confluence plate, small holes are formed in the two confluence plates and the two supporting plates, and screw rods penetrate through the small holes and are matched with nuts, so that the overall fixation of the three groups of rectifier diodes is realized; by changing the shapes of the two confluence plates and the two supporting plates, the overall configuration of the whole output rectifying device can be changed.