9 results about "Polyphase coil" patented technology

This motor control device controls a vehicle driving motor that is driven by a power converter for performing power conversion from DC power to AC power and is provided with coils of a plurality of phases. The motor control device comprises: a coil temperature acquisition unit that acquires or estimates the temperatures of the coils of the plurality of phases; a torque restriction unit that restricts the output of the motor when the temperature of the coil of at least one phase among the coils of the plurality of phases exceeds a first threshold value; and a position control unit that controls a stop position of the rotor of the motor when the temperature of the coil exceeds a second threshold value that is a threshold value lower than the first threshold value. When the temperature of the coil exceeds the second threshold value, the position control unit controls the stop position of the rotor of the motor so that the absolute value of current flowing through the phase having said coil temperature is equal to or less than a predetermined value when the vehicle stops.

This invention relates to a rotor, a generator, and a wind turbine generator set. The rotor includes: a rotor core, comprising a core body and a slotted structure disposed on the outer periphery of the core body, with a shaft hole disposed within the core body; a winding, wound around the outer periphery of the rotor core and mounted on the slotted structure, with ends protruding from both ends of the rotor core along the axial direction of the shaft hole; the winding includes multi-phase coil groups, each phase coil group including a first terminal and a second terminal; support rings are respectively disposed at both ends of the core body in the axial direction; a wiring assembly, including a star ring and lead-out terminals, with the first terminal of each phase coil group connected to the star ring, and the second terminal of each phase coil group connected to the lead-out terminal; and a support assembly connected between the wiring assembly and the support rings to support the wiring assembly. This invention can reduce the probability of rotor deformation and improve the safety and reliability of the rotor.

Disclosed is a motor including a stator and a rotor configured to rotate by electromagnetic interaction with the stator. The stator includes a stator core, a coil wound around the stator core to form a rotating magnetic field, an insulator insulating the coil from the stator core, a guide member provided on one side of the stator core to guide a withdrawal direction of one end of the coil, and a neutral terminal provided on the guide member and connected to the other end of the coil. The guide member includes a body facing the coil, an inner guide protruding axially from the body, and an outer guide protruding axially from a radially outer side of the inner guide on the body. The neutral terminal is supported by the guide member and electrically connects coil ends of multiple phases.

Engine (50; 54; 55; 56), comprising: a field (2); and a runner (1) which is facing the field (2) and is arranged to be movable relative to the field (2), wherein the rotor (1) comprises a core back (11), several teeth (12) and several coils (13), wherein the several teeth (12) each extend from the core back (11) to the field (2) and are arranged in a direction of travel of the rotor (1) with respect to the field (2), wherein the several coils (13) are attached to the several teeth (12), wherein the multiple teeth (12) comprise at least one first tooth and at least one second tooth, wherein each of the at least one first tooth is a tooth to which only one coil of a single phase of the coils (13) is attached, wherein each of the at least one second tooth is a tooth to which coils of multiple phases of the coils (13) are attached, wherein the multiple coils (13) are each arranged such that they do not extend beyond a slot formed by adjacent teeth, wherein C sections (10) are arranged in the direction of travel, wherein the section (10) comprises N / C teeth (12), where N is the number of teeth (12) of the runner (1), wherein C is a greatest common divisor of N and the number of magnetic poles of the field (2), the magnetic poles being located in a region facing the N teeth (12), and where the number of second teeth per section of the C sections (10) is one.

To provide a stator of a rotary electric machine which can be manufactured more easily.SOLUTION: A stator of the present embodiment includes a plurality of divided cores constituting a stator core, and a multi-phase coil conductor inserted into a slot portion of the stator core, in which the coil conductor is a continuous coil in which a straight portion accommodated in the slot portion of the stator core and a crossover portion between slots in a coil end portion are alternately arranged, and the divided cores and the coil conductor are formed in an annular shape after the coil conductor is inserted into a slot portion formed by arranging the plurality of divided cores on a plane.SELECTED DRAWING: Figure 6

This motor control device controls a multi-phase AC motor provided with a multi-phase coil unit (70) having a plurality of multi-phase coil parts (71) each including coil parts (72) of different phases electrically connected to each other. The motor control device comprises: a current path unit (20) that forms a current path between a power supply device (11) and the multi-phase AC motor; and an AC conversion unit (50) that has a plurality of AC conversion parts (51) capable of converting a DC current of the power supply device into an AC current. The AC conversion unit is configured to be able to electrically separate one coil part from another coil part of the same phase by switching off one AC conversion switching element.

A double-face linear motor with a short primary and a segmented secondary for use in belt conveyors where rotary motors are predominantly used. The primary remains fixed and static, firmly connected to the conveyor structure and the secondary follows the belt that moves in a closed loop in a vertical plane around return drums. This motor improves the efficiency of conventional conveyor belts using rotary electric motor units in their head drums. The method includes electromagnetically moving by induction the secondary blades made of a conducting material as they pass between the active faces of the motor primary where multiphase coils are arranged. The secondary blades are fastened to the belt and moves the belt by electromagnetic forces generated in the primary. The long-segmented secondary makes a distributed linear drive because the segments formed by the blades adapt to the loop path formed by the return drum of the belts.

The invention provides a control circuit of a motor. The control circuit comprises a sampling circuit and a sampling control circuit. The sampling circuit comprises a signal gating circuit. The signal gating circuit comprises a plurality of phase current acquisition ports and a bus current acquisition port. The plurality of phase current acquisition ports are correspondingly connected with multi-phase coils of the motor and are respectively used for acquiring phase currents of the coils connected with the phase current acquisition ports. The bus current acquisition port is connected with a bus of the motor and is used for acquiring bus current of the motor. And the sampling control circuit is connected with the sampling circuit and is used for controlling the signal gating circuit to sequentially gate the multi-phase current and the bus current in a time-sharing manner and sampling a target signal which is output by the sampling circuit and corresponds to the current gated current. According to the invention, the size and cost of the circuit can be reduced, the complexity of control operation is reduced, and the efficiency and stability of the control circuit are improved.

An object is to easily ensure the insulation properties of a plurality of coil ends. A multi-phase motor insulating structure is used in a multi-phase motor including a stator unit provided with a stator core and a multi-phase coil. The multi-phase motor insulating structure includes a cover part containing an insulating material. The cover part is configured to cover and hold together a plurality of coil ends of the multi-phase coil that protrudes from an end of the stator core, and defines a positional relationship between the plurality of coil ends.