69results about "Association for rectification" patented technology

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.

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.

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.

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.

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.

An electrical power system for a vehicle includes at least one electric machine, one or more power rectifiers, and a plurality of DC channels. The at least one electric machine comprises a plurality of substantially magnetically decoupled multi-phase windings wound in a tooth shape, and the at least one electric machine is mechanically balanced even if one of the plurality of windings is de-energized. The one or more power rectifiers are configured to generate rectified power from power generated by the at least one electric machine. A plurality of DC channels are formed after the at least one power rectifier and configured to provide DC power to one or more loads within the vehicle.

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 rotor assembly for an electric machine includes a first end and a second end, the second end distal from the first end in an axial direction, a first radial wall extending between the first end and the second end and defining an inner cavity, and a second radial wall extending between the first end and the second end, the second radial wall radially-overlying the first radial wall and defining an outer cavity between the first radial wall and the second radial wall.

To provide a controller which is compact, has high operability, suppresses noise, and is excellent in electrical characteristics.SOLUTION: The controller includes a power supply circuit board to which a first voltage is input, and a control circuit board and a system circuit board to which a second voltage smaller than the first voltage is input, the power supply circuit board and the system circuit board are disposed along the bottom surface panel and are disposed side by side in a first direction such that the power supply circuit board is located on the back surface panel side and the system circuit board is located on the front surface panel side, in the plan view of the bottom panel, the control circuit board is disposed to overlap the system circuit board, the system circuit board has a first connector coupled to the robot, and the control circuit board has a second connector coupled to an external device that generates a drive command program of the robot.SELECTED DRAWING: Figure 2

A highly efficient circulator system is provided, useful for hydronic systems, including both heating and cooling systems. The stand-alone circulator motor is controllable by input from certain sensors, preferably thermal sensors, which provide data enabling the controller of the brushless pump motor to vary its flow output to meet changes in systems loads. The circulator has a ceramic permanent magnet rotor, such as a ferrite, with an electronically, preferably sinusoidally, commutated, electro-magnetic stator controlling the input of electrical power.

The invention discloses a twelve-phase rectification generator for simulation fault diagnosis and a use method thereof. The twelve-phase rectification generator comprises a generator set, a peripheral guarantee assembly and a fault simulation control device. The generator set comprises a motor shell and a motor assembly, the motor assembly comprises a motor wind path, an internal fan and a matching part, the motor wind path is arranged in the motor shell and covers a motor stator and a motor rotor, the matching part is arranged in the generator set, and the internal fan is installed on a rotating shaft of the motor rotor; the external guarantee assembly is arranged outside the generator set and is connected with a non-driving end of the generator set; the fault simulation control device comprises detection equipment and a fault machine, the detection equipment is arranged corresponding to the external guarantee assembly, the motor stator, the motor rotor and the matching part, the fault machine is in signal connection with the detection equipment, and the fault machine can control the operation state of the detection equipment; through the control of the fault machine on the detection equipment, the special ring fault of the twelve-phase rectification generator can be comprehensively simulated, and the fault diagnosis capability of students is improved.

The application relates to a magnetic suspension bearing and motor integrated control system, which comprises the following parts: a high-voltage rectification module for rectifying input current into direct current; a motor driving module for receiving direct current bus voltage and driving the motor to operate under the action of a control signal; a DCDC module for converting the direct current bus voltage into low-voltage direct current; a magnetic bearing driving module for outputting driving current to the magnetic bearing under the action of a control signal; and a control system connected with the high-voltage rectification module, the motor driving module and the magnetic bearing driving module respectively, for synchronously acquiring motor operation state information and magnetic bearing operation state information in a control period, completing motor control operation and magnetic bearing control operation in the control period, and outputting control signals for driving the motor driving module and the magnetic bearing driving module under a PWM time sequence, so as to realize the collaborative operation of the magnetic bearing control and the motor control.

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.

This utility model relates to an end cover assembly for a motor, and a motor including the end cover assembly. The end cover assembly includes an end cover body, a fixing plate, and a filter circuit board. The end cover body includes a peripheral wall and an end wall connected to an axial end of the peripheral wall, and the end wall is provided with a first through hole. The fixing plate includes a first section, a second section, and a connecting section. The filter circuit board is arranged in the first through hole and forms an annular gap with the inner peripheral surface of the first through hole. The first section abuts against the filter circuit board, the second section abuts against the end wall, and the connecting section is pressed into the annular gap with a pre-tightening force. The motor according to this utility model, by using a fixing plate, can effectively conduct and fix the filter circuit board and has a good grounding effect, providing effective protection for high electromagnetic compatibility during motor operation.

A rotor assembly for an electric machine includes a first end and a second end, the second end distal from the first end in an axial direction, a first radial wall extending between the first end and the second end and defining an inner cavity, and a second radial wall extending between the first end and the second end, the second radial wall radially-overlying the first radial wall and defining an outer cavity between the first radial wall and the second radial wall.

The utility model relates to the field of permanent magnet motor discloses a low noise permanent magnet motor, including the casing, the middle part of casing is provided with the stator, the middle part of stator is provided with the rotor, the stator and casing are commonly installed with the buffer ring and the number is multiple, the middle part of casing is through and is fixedly connected with the fin and the number is multiple, the one end fixed connection of fin is close to stator limit piece, the outer wall of limit piece and buffer ring abuts, multiple the sound insulation layer is established between the fin, in the utility model, through setting up the mutual cooperation between casing and fin and sound insulation layer, buffer ring and other components, can carry out the buffer protection of certain degree when the motor runs to the noise of motor operation can be absorbed and reduced, can be forced airflow along the axial horizontal flow through setting up rectifier grid to reduce airflow noise, reduce the noise when the motor runs, more practical.

A combined power system includes a rotating electric machine system. The rotating electric machine system includes a rotating electric machine and a rotating electric machine housing. A first retaining member and a second retaining member are provided on an outer circumferential portion of the rotating electric machine housing in order to retain the rotating electric machine housing by a support member provided in a structural body in which the rotating electric machine system is installed. An electrical component is disposed at a position on the outer circumferential portion of the rotating electric machine housing, and the position is separated from the portion between the first retaining member and the second retaining member.

The semiconductor device (S1) has a first external electrode (101) having an outer peripheral section (101s), which has a circular shape in top plan view and which is to be attached to an alternator (Ot). On the first external electrode (101) there mounted: a MOSFET chip (103); a control circuitry (104) to which voltages at or a current flowing between a first main terminal (103d) and a second main terminal (103s) of the MOSFET chip (103) is inputted and which generates, on the basis of the voltages or the current, a control signal applied to a gate (103g) of the MOSFET chip(103); and a capacitor (105) for providing a power supply to the control circuitry (104). The semiconductor device further has a second external electrode (107) disposed opposite to the first external electrode with respect to the MOSFET chip (103). An electrical connection is made between the first main terminal (103d) of the MOSFET chip (103) and the first external electrode (101), and between the second main terminal (103s) of the MOSFET chip (103) and the second external electrode (107). According to the invention, the capacitor (105) is mounted on the first external electrode (101) via an isolation substrate (106).

An electric power system for a vehicle includes at least one motor, one or more power rectifiers, and multiple DC channels. The at least one motor includes multiple multiphase windings wound in a toothed configuration that are substantially magnetically decoupled, and the at least one motor is mechanically balanced even if one of the windings is de-energized. The one or more power rectifiers are configured to generate rectified power from the power generated by the at least one motor. The multiple DC channels are formed after the at least one power rectifier and are configured to provide DC power to one or more loads within the vehicle.

This invention relates to the field of power electronics technology, specifically to a brushless excitation synchronous generator, comprising a housing, a rotor assembly installed through the housing, a front cover and a rear cover connected to both ends of the housing, a main PMG disposed inside the front cover, a stator assembly coaxially arranged with the rotor assembly fixed to the inner wall of the housing, a rectifier module disposed outside the housing, and a starting PMG. The main PMG and the starting PMG are respectively connected to two independent three-phase full-wave rectifier bridges, both of which are fixed on the rotor assembly. The starting PMG has a greater number of pole pairs than the main PMG. The beneficial effect of this invention is that the main PMG and the starting PMG constitute a dual excitation source system, serving as backups for each other. An intelligent switching unit automatically cuts off the starting PMG circuit, ensuring it only operates when necessary, avoiding no-load losses and copper losses caused by long-term auxiliary power supply operation. This on-demand power supply mechanism improves the overall efficiency, truly achieving the goal of high-efficiency operation of energy-saving generator sets, and meeting the requirements of green and low-carbon development.

The application provides an armature assembly and a starter, and relates to the technical field of overload protection of the starter, which optimizes the structure of the armature assembly to a certain extent and guarantees the consistency of the overload failure mode of the starter. The armature assembly comprises a core, an armature winding and an abutting piece. The armature winding is wound on the core, and first and second accommodating spaces are arranged at both ends of the core. The abutting piece is arranged in the first and / or second accommodating space and abuts against the armature winding.