WO2016086874A1

WO2016086874A1 - Coaxial double rotor super-powered electric motor

Info

Publication number: WO2016086874A1
Application number: PCT/CN2015/096295
Authority: WO
Inventors: 王勇
Original assignee: 深圳市高瓴科技有限公司; 韩雨橙
Priority date: 2014-12-04
Filing date: 2015-12-03
Publication date: 2016-06-09
Also published as: CN105449959A; CN105449959B

Abstract

A coaxial double rotor super-powered electric motor, comprising: a stator (1), an outer rotor (2) and an inner rotor (3). The inner rotor is coaxially sleeved inside the outer rotor (2), and the assembly of the outer rotor and the stator is same as a traditional electric motor. A clustered winding is improved on to obtain a single row winding, and currents of two adjacent rows of winding are mutually opposite, enabling improved energy of the combined magnetic-flux generated by a unit current.

Description

Coaxial double rotor super motor

Technical field

This invention relates to motor technology. In particular, it relates to a coaxial dual-rotor super-electric motor.

Background technique

Conventional motors are composed of a stator and a rotor. Typically, the stator is fixed to the base and the rotating rotor converts the electrical energy input to the motor into a rotational mechanical energy output. The speed of the motor output is the speed of the rotor, which cannot meet the requirements of ultra-low speed, and it is difficult to achieve ultra-high speed.

To date, the windings of the motor are clustered - one winding is bundled from a number of turns. According to the electromagnetic induction theorem and the right fist rule, it is not difficult to judge that only the magnetic flux of the outermost wire in the bundle winding is a synthetic magnetic flux that mutually enhances the energy transmission, and the magnetic flux of most of the wires inside the bundle winding is mutually Offset, and did not participate in the transmission of energy.

The invention adopts a coaxial double rotor structure, and at the same time, the bundle winding is modified into a single row winding, the volume of the motor is greatly reduced, and the output of different speeds can be obtained from the outer rotor and the inner rotor respectively.

Summary of the invention

The coaxial double-rotor super-electric motor according to the present invention is composed of a stator 1, an outer rotor 2 and an inner rotor 3; the inner rotor 3 is coaxially fitted inside the outer rotor 2, and the assembly of the outer rotor 2 and the stator 1 is the same as that of the conventional motor .

The outer circumferential surface of the outer rotor 2 is designed with outer rotor magnet 2-1 magnets, and the relationship between these magnets and the stator winding 1-1 is identical to that of the conventional permanent magnet motor; the inner circular surface of the outer rotor 2 is designed to be similar to the stator winding The outer rotor winding 2-1, the outer rotor winding is powered by a slip ring or a brush, and a motor similar to the conventional permanent magnet motor is formed between the outer rotor winding 2-1 and the inner rotor 3; the rotational speed of the outer rotor 2 is V ₁ , the rotational speed of the inner rotor 3 is V ₂ , and the rotational speed of the inner rotor 3 corresponding to the stator is U=V ₁ -V ₂ .

By controlling the direction of rotation of the outer rotor 2 and the inner rotor 3 and the rotational speeds of V ₁ and V ₂ respectively, the rotational speed U of the inner rotor 3 relative to the stator 1 can be adjusted; when V ₁ and V _{2 are} opposite directions and V _{1 is} greater than V ₂ , U is the same direction as V ₁ , the rotation speed is the difference between the two; when V _{1 is} less than V ₂ , the direction of U and V ₁ is opposite, the rotation speed is still the difference between the two; when V ₁ is equal to V ₂ , the inner rotor 3 is stationary with respect to the stator 1. If the V ₁ and V ₂ directions are the same, U is the sum of the rotational speeds of the two rotors.

At the same time, the cluster winding is improved to a single-row winding, and the currents of the adjacent two rows of windings are reversed, so that the magnetic flux of each turn of the wire can be fully utilized, thereby increasing the energy of the synthetic magnetic flux generated by the unit energy consumption.

According to the law of electromagnetic induction - a magnetic field is generated around the energized conductor, and the direction of the magnetic flux follows the right fist rule.

The winding of the conventional motor is bundled winding. It can be clearly seen from the schematic diagram of the flux distribution of the bundle winding that the turns 1-2 of the inner conductor of the bundle winding cancel each other out, and only the flux of the outermost conductor is The windings that reinforce each other to generate transmission energy synthesize magnetic fluxes 1-3, and most of the magnetic fluxes located inside the bundle windings cancel each other out and do not participate in the transmission of energy.

The case of changing the winding to a single-row structure will be very different. It is not difficult to see from the schematic diagram of the magnetic flux distribution of the single-row winding that the synthetic magnetic fluxes 1-3 between adjacent windings of each row are mutually reinforcing, in the coil. When the number of turns and current are the same, the energy of the composite magnetic flux 1-3 participating in the energy transmission is greatly enhanced, the power density of the motor can be multiplied, and the efficiency of the motor is greatly increased. Under the same power condition, the volume is increased. It can even be reduced to 1/8 of the original, or even smaller.

DRAWINGS

Figure 1: Schematic diagram of the structure of a two-rotor motor

1 - stator;

1-1 - stator winding;

2 - outer rotor;

2-1 - outer rotor magnet;

2-2 - outer rotor winding;

3 - inner rotor;

3-1 - Inner rotor magnet.

Figure 2: Schematic diagram of the double rotor structure

2 - outer rotor;

2-1 - outer rotor magnet;

2-2 - outer rotor winding;

3 - inner rotor;

3-1 - Inner rotor magnet.

Figure 3: Schematic diagram of the conventional motor bundle winding structure

1 - stator;

1-1 - stator windings.

Figure 4: Schematic diagram of cluster winding flux distribution

1-1 - stator winding;

1-2 - single turn wire flux;

1-3 - Winding synthetic flux.

Figure 5: Schematic diagram of a single row winding

1 - stator;

1-1 - stator windings.

Figure 6: Schematic diagram of magnetic flux distribution in a single row of windings

1 - stator;

1-1 - stator winding;

1-2 - single turn wire flux;

1-3 - Winding synthetic flux.

detailed description

Coaxial double rotor super-electric motor. The stator core, the outer rotor core and the inner rotor core are respectively made of high-quality silicon steel sheets; the stator core is internally machined with a wire slot, and the stator winding is wound by a single row structure; the outer surface of the outer rotor is inlaid with a rare earth permanent magnet a magnet, the inner surface is processed with a wire groove, the outer wire is wound in a single row in the wire groove, the outer rotor winding is supplied by a slip ring or a brush; the surface of the inner rotor is inlaid with a rare earth permanent magnet strong magnet; the stator, the outer rotor and the inner rotor are arranged In coaxial assembly, the outer rotor can rotate within the stator, the inner rotor can rotate within the outer rotor, and the outer rotor and inner rotor respectively output power.

By controlling the direction of rotation of the outer rotor and the inner rotor and the rotational speed of the inner rotor respectively, the rotational speed of the inner rotor relative to the stator can be adjusted;

When the two rotors rotate in the same direction, the rotational speed of the inner rotor relative to the stator is equal to the sum of the two rotor speeds.

When the two rotors rotate in opposite directions, the rotational speed of the inner rotor relative to the stator is the difference between the two rotor rotational speeds, and the rotational direction is the same as that of the high rotational speed rotor; if the two rotational speeds are the same, the inner rotor is stationary with respect to the stator.

Claims

The coaxial double-rotor super-electric motor is characterized in that: the coaxial double-rotor super-electric motor is composed of a stator, an outer rotor and an inner rotor; the inner rotor is coaxially arranged inside the outer rotor, and the assembly of the outer rotor and the stator is the same as that of the conventional motor ;

At the same time, the bundle winding is improved to a single-row winding, and the currents of the adjacent two rows of windings are reversed, which can increase the energy of the resultant magnetic flux generated by the unit current.
The stator winding of the coaxial double-rotor super-electric motor according to claim 1 is a single-row structure, wherein: the winding of the conventional motor is bundle-wound, and only the magnetic flux of the outermost wire participates in energy transmission, which is absolutely large. Most of the magnetic fluxes located inside the bundle windings cancel each other out and do not participate in the transmission of energy. The present invention changes the windings into a single-row structure, and the currents of the adjacent two rows of windings are reversed to achieve adjacent two rows of windings. The resultant magnetic flux between each other is enhanced.
The inner rotor according to claim 1 is coaxially fitted inside the outer rotor, wherein the inner rotor and the outer rotor are coaxially fitted to form a conventional motor structure, the outer rotor is the stator of the inner rotor, and the inner rotor is at the outer rotor. Internal rotation.
The outer rotor according to claim 1 is designed with a winding for driving the rotation of the inner rotor, wherein the inner circle of the outer rotor is the stator of the inner rotor, is designed with winding slots, and is embedded in the same single row structure as the stator windings. Winding.
The winding of the outer rotor according to claim 4 needs to be connected to an external driving power source, characterized in that the outer rotor is provided with a slip ring or a brush, and the external driving power source supplies power to the winding through the slip ring or the brush.
The outer rotor according to claim 1 is designed with a rare earth ferromagnetic magnet, characterized in that the outer surface of the outer rotor is inlaid with a rare earth magnet and the distribution of the magnet is designed according to the specific requirements of the motor.
The inner rotor according to claim 1 is designed with a rare earth magnet and is characterized by an outer rotor The surface of the circle is inlaid with a rare earth magnet and the distribution of the magnet is designed according to the specific requirements of the motor.
The inner rotor and the outer rotor according to claim 1 can respectively output rotational mechanical energy to the outside, wherein the output of the outer rotor is identical to that of the conventional motor; the output of the inner rotor is the vector sum of the rotational speeds of the outer rotor and the inner rotor. .