6results about How to "Reduce copper loss" patented technology

The utility model discloses a fractional slot concentrated winding, a stator and a fault-tolerant motor, which comprise coils arranged in stator slots, the pitch of the coils is 1, the coils comprise working coils and backup coils, the working coils and the backup coils are distributed at intervals, and the working coils and the backup coils are sequentially arranged left and right. According to the fractional-slot concentrated winding structure, the coils can be uniformly distributed to each stator tooth, the coil inserting difficulty is reduced, the utilization rate of the stator slots is improved, and the copper loss of a fault-tolerant motor is reduced. Moreover, the working coil and the backup coil are arranged left and right, and the isolation space is increased compared with the vertical arrangement, so that the thermal isolation between the two sets of windings is increased, and the reliability of the fault-tolerant motor is further improved.

The present invention provides a method for suppressing small current oscillation of a fast recovery diode based on a saturated reactor, wherein a saturated reactor with a magnetic core is used to construct a semiconductor device power module, and the saturated reactor with a magnetic core is obtained by the following steps: A. For the semiconductor device power module, an air-core adjustable reactor is used as a commutation reactor, and the reactance value of the air-core adjustable reactor is adjusted to a first expected value that does not damage the semiconductor device power module during commutation when a switching behavior occurs; B. The inductance value of the air-core adjustable reactor is repeatedly increased until the switching behavior under any current does not cause low current oscillation, and the inductance value L of the air-core adjustable reactor is confirmed at this time; C. Based on the inductance value L obtained in the step B, the inductance value of the saturated reactor with a magnetic core when it is not saturated is determined to design the saturated reactor with a magnetic core. The IGCT module realized by the present invention has a small volume, good oscillation suppression effect, and high efficiency.

The invention relates to a permanent magnet motor, in particular to a modular three-stator bearingless stator permanent magnet motor structure. According to the motor, the torque magnetic flux and the suspension force magnetic flux are separated in space, the decoupling degree can be improved, and then the control difficulty is reduced. Comprising a stator assembly, a rotor assembly and a casing assembly. The stator assembly comprises a C-shaped stator, a C-shaped suspension stator assembly and a yoke-free stator assembly. The C-shaped stator and C-shaped suspension stator assembly comprises a plurality of C-shaped stator components, C-shaped suspension stator components and a C-shaped stator frame, and the C-shaped stator components and the C-shaped suspension stator components are evenly distributed along the circumferential inner wall of the C-shaped stator frame and connected together through the C-shaped stator frame. The yoke-free stator assembly comprises a yoke-free stator frame and a plurality of yoke-free stator components, and the plurality of yoke-free stator components are distributed at equal intervals along the circumferential inner wall of the yoke-free stator frame and are connected together through the yoke-free stator frame. And the yoke-free stator assembly is positioned inside the C-shaped stator and the C-shaped suspension stator assembly.

The application provides an insulating end plate of a stator, a stator, a motor, a compressor and a vehicle. The insulating end plate of the stator comprises a blocking part, a winding part and a wire passing part. The wire passing part is arranged on one side of the blocking part along the radial direction of the stator. The wire passing part comprises a connecting section, a lead-in section and a lead-out section. The winding part is connected between the connecting section and the blocking part. The lead-in section and the lead-out section are connected to the first axial end surface of the connecting section. The lead-in section and the lead-out section are arranged in a spaced manner along the circumferential direction of the stator to enclose a wire passing groove. The lead-in section and the lead-out section each have a first radial end surface and a second radial end surface along the radial direction of the stator. The first radial end surface of one of the lead-in section and the lead-out section is provided with a first wire groove, and the second radial end surface of the other one is provided with a second wire groove. The first wire groove and the second wire groove are communicated through the wire passing groove. The winding part can be closely arranged on the insulating end plate of the stator, the wire end is reduced, and the automatic winding of the equipment is facilitated.

The invention discloses a magnetic suspension motor stator wire winding and inserting method and a magnetic suspension motor, and the method comprises the steps: S1, a plurality of varnished wires are wound in parallel to form a coil group, the coil group comprises a plurality of coils corresponding to one phase of the motor, and the plurality of coils after winding are independently placed; s2, repeating the step S1 to form another one or more coil groups, and according to the winding direction of the coil groups, enabling the coils in the multiple coil groups to be in one-to-one correspondence and combining wire harnesses so as to form a coil combination of which the winding number is multiple times of the number of the enameled wires; s3, the ratio of the wire storage area to the inner hole area of the stator is calculated, and if the ratio is smaller than 0.3 and the number of parallel winding wires is smaller than or equal to 100, single-time double-layer laminated winding wire embedding is carried out; if the ratio is smaller than 0.3, but the number of the parallel winding wires is larger than 100, the wires are wound and inserted in a double-layer mode for multiple times; and if the ratio is greater than 0.3, multiple times of double-layer lap winding and wire embedding are carried out. According to the invention, the problems of small inner hole of the stator and large number of winding and inserting wires are solved, so that the winding and inserting difficulty of the stator is reduced.

An electromagnetic drive device and a manufacturing method for reducing noise, power consumption and harmonics, comprising a stator and a rotor rotatably connected to the middle of the stator, wherein the stator is provided with a plurality of windings arranged around the circumference of the middle of the stator, and the rotor is provided with a plurality of permanent magnets rotating synchronously with the rotor; the winding is formed by covering a plurality of main enameled wires and a plurality of auxiliary enameled wires, an air gap is formed between adjacent main enameled wires, and the plurality of auxiliary enameled wires are arranged in the air gap of the winding; a plurality of mounting notches for mounting a plurality of permanent magnets are formed on the rotor, and a plurality of through holes are formed on the rotor; compared with the prior art, by filling the auxiliary enameled wires between the air gaps of adjacent main enameled wires, the cross-sectional area of ​​the winding is effectively increased without increasing the area of ​​the stator slot, and the copper loss is reduced, and the main enameled wires are fitted with the auxiliary enameled wires, so as to prevent the generation of harmonics due to the interaction of magnetic fields generated when current is passed due to looseness between the enameled wires.