WO2015016495A1 - Bldc dual motor device - Google Patents

Abstract

The present invention relates to a BLDC dual motor device and a control circuit therefor and, more specifically, to a BLDC dual motor and a control circuit therefor, and the BLDC dual motor can obtain a high output and torque with a small BLDC capacity motor by changing a driving structure of the BLDC motor to control the same by using two driver controllers, and can be used for electric driving devices of an electric vehicle, an electric two-wheeled vehicle and the like by increasing efficiency. The BLDC dual motor, according to the present invention, is a BLDC motor, comprising: a stator in which a coil is wound around a core; a rotor which is rotated relative to the stator; a hall element for sensing a rotation location of the rotor, wherein the stator is formed by separately winding two three-phase coils around one core so as to be independent from each other, and a common hall element is located on each phase of two three-phase coils.

Description

 【Specification】

 [Name of invention]

 BLDC Dual Motor Device

 Technical Field

 The present invention relates to a BLDC dual motor and its control circuit, and more specifically,

By changing the drive structure of the BLDC motor to control two driver controllers, it is possible to produce high output and torque with a small capacity BLDC motor and increase the efficiency so that it can be used in electric drive devices such as electric cars and two-wheeled vehicles. BLDC dual motor and its control circuit,

 [Background]

 <2> With global warming increasing interest in the environment, electric vehicles, electric motorcycles, and bicycles that use motors are being converted to vehicles to cope with internal combustion engines that use fossil fuels.

 In the electric driving method of the electric vehicle or the electric motorcycle, a method of driving a DC motor with a battery is generally used. In the case of the method using the DC motor, there is a problem in motor efficiency and durability. BLDC motors including power semiconductor devices have been studied.

<4> BLDC motor is a motor that removes mechanical contact such as brush and commutator from DC (Di rect Current) motor and changes it electrically.

The brushless DC motor includes a stator wound around a core and a rotor relatively rotated with respect to the stator.

The core is generally formed by laminating an annular iron plate, and the rotor is equipped with a permanent magnet consisting of an N pole and an S pole.

<7> As a basic component for driving the BLDC motor, a Hall element for detecting the stator, the rotor, and the position of the rotor, and a voltage applied to the coil of the stator by receiving the signal of the Hall element. It consists of a driver controller that controls the.

<s> In the above configuration, the output of the Hall element is determined to be Low or High according to the position of the permanent magnet mounted to the rotor, and the inverter built in the driver controller according to the three Hall element signals. Each of the six power semiconductors (FETs) that make up the FET is properly powered and powered by a BLDC motor.

^<■ »In other words, the conventional BUX motor 110, as shown in Figure 1, the multiple driver controller

When the power source 300 is input to the 120, the zero of the rotor is formed by three Hall elements 160. By detecting the spherical magnet position, six power semiconductor elements (FETXIOO) are properly driven in accordance with the output signal of the hall element 160, and a magnetic field is generated by applying power to the three-phase winding 140.

 <ιο> The rare electrons rotate due to the interaction between the magnetic field generated in the stator and the magnetic field generated in the permanent magnet of the rotor.

<ι ι> By the way, the conventional BLDC motor is widely used in electric vehicles and electric motorcycles, but there is a problem of lack of output and torque, and the lack of output and torque is causing great difficulty in practical use or commercialization in hilly terrain. .

 <12>

 [Detailed Description of the Invention]

 [Technical Challenges]

 The present invention has been made to solve the above problems, and by changing the drive structure of the BLDC motor to control two driver controllers, high output and torque can be produced with a small capacity BLDC motor and The purpose of the present invention is to provide a BLDC dual motor and its control circuit which can be used or commercialized in electric drive devices such as electric vehicles and two-wheeled vehicles.

 Technical Solution

 The BLDC dual motor according to the embodiment of the present invention for achieving the above object is a stator wound around a coil, a rotor relatively engaged with respect to the stator, and a rotational position of the rotor. In the BLDC motor comprising a Hall element for sensing,

 The stator is formed in such a manner that two three-phase windings are divided and wound around one core, and the hall elements common to each of the two three-phase windings are positioned.

<i 6> In addition, the first three-phase winding of the two three-phase winding is composed of A coil, B coil, C coil, the second three-phase winding is composed of A 'coil, B ¹ coil, C' coil,

<1 7> The stator is formed by tying together a single coil A and coil A, coil B and coil B, coil C and coil C, and winding them alternately on the core.

<ι & In addition, when the first three phase winding of the two three-phase winding is composed of A coil, B coil, C coil, the second three winding is composed of A 'coil, B' coil, C 'coil,

»> One core is divided into first compartment-second compartment, and A coil, B coil and C coil are alternately wound in the first compartment, and A 'coil, B' coil and C 'coil are in the second compartment. -The stator is formed by winding the turns alternately. In addition, the control circuit of the BLDC dual motor according to an embodiment of the present invention, any one of the above-described BLDC dual motor,

<2i> and two driver controllers connected to each of the two three-phase windings to alternately apply current to three phases of the three-phase windings by detecting common rotor position of the Hall element. .

 Advantageous Effects

In order to solve the above problem, in order to improve the output of the BLDC motor, the three-phase winding of one core is performed twice to control two driver controllers so that a single motor and the same force Torque can be achieved and the reliability of the motor or driver controller can be improved at overload.

 In addition, according to the present invention, even if one driver controller fails, the other driver controller can be driven, and the BLDC motor is applied to all industries such as an electric vehicle, a two-wheeled vehicle, and the like that are being developed. Can be used by

 [Brief Description of Drawings]

 1 is a block diagram for driving a conventional BLDC motor.

 Figure 2 is a blotting degree for driving the BLDC dual motor according to the present invention.

 3 is a view showing a three-phase winding of a BLDC dual motor according to an embodiment of the present invention.

 4 is a view showing a three-phase winding of a BLDC dual motor according to another embodiment of the present invention.

 FIG. 5 is a photograph for a drawing stand showing the internal structure of a BLDC hub motor to which the three-phase winding of FIG. 3 is applied.

 6 is a drawing substitute photograph showing the stator of the BLDC hub motor shown in FIG.

 <()> FIG. 7 is a drawing substitute photograph showing the Hall element of the BLDC hub motor shown in FIG. 5.

 <?!> FIG. 8 is a drawing substitute photograph showing the rotor of the BLDC hub motor shown in FIG. 5.

 <:> FIG. 9 is a drawing substitute photograph showing a BLDC motor to which the three-phase winding of FIG. 4 is applied. 10A to 10C are graphs illustrating the performance of a BLDC dual motor according to the present invention in comparison with a conventional motor.

Best Mode for Implementation of the Invention Hereinafter, the configuration and operation of the embodiments of the present invention will be described with reference to the accompanying drawings.

 BRIEF DESCRIPTION OF THE DRAWINGS It should be noted that like reference numerals refer to like elements as much as possible even though they are shown in different figures.

In the following description of the present invention, if it is determined that specific descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, when a part is said to "include" a certain component, it means that it may further include other components, except to exclude other components unless otherwise stated.

 3 is a view showing a three-phase winding of a BLDC dual motor according to an embodiment of the present invention.

 <39>. According to one embodiment of the present invention as shown in FIG.

 The two three-phase windings (140, 150) are separately wound to make a stator (170), and two three-phase windings (140,150) to overlap the neighbors.

 In more detail, the first three-phase winding 140 of the two three-phase winding is A coil,

 B coil, C coil, and the second phase winding 150 is made of A 'coil, B' coil, C 'coil, A coil and A' coil, B coil and B 'coil, C coil and The stator 170 is fabricated by tying together the C 'coils and winding them around the core 155 alternately.

 FIG. 5 is a drawing photograph showing the internal structure of the BLDC hub motor to which the three-phase winding of FIG. 3 is applied, FIG. 6 is a drawing substitute photograph showing the stator of the BLDC hub motor shown in FIG. 5, and FIG. Figure 5 is a drawing for the Hall device of the BLDC hub motor shown in Figure 5, Figure 8 is a drawing for showing the rotor of the BLDC hub motor shown in Figure 5, BLDC hub motor (widely used in electric vehicles or electric motorcycles ( HUB Motor) shows a method of winding the three-phase winding (140,150) to the core 155 together by the winding method as shown in FIG.

 In the BLDC hub motor, the rotor 200 alternately arranges the N poles and the S poles of the plurality of permanent magnets 190 so as to cover all of the outer circumference of the fixed support 170 as shown in FIG. The stator 170 fixed to 180 has a three-phase winding (140,150) as shown in FIG.

<^> In addition, as shown in FIG. 7, the fixed paper is placed by detecting the position of the rotary paper-200 by positioning the hole holder-160 common to each of the three-phase windings 140 and 150. 170 three-phase winding When the current is alternately applied to the three phases of 140 and 150, the rotor 200 is formed by the interaction of the current flowing through the three-phase windings 140 and 150 and the permanent magnet 190 constituting the rotor 200. Rotate

 2 is a block diagram for driving a BLDC dual motor according to the present invention.

 As shown in FIG. 2, the three-phase windings 140 and 150 are independently divided into the core 155, and driver currents 120 and 130 are inputted to the three-phase windings 140 and 150, respectively. To control.

 At this time, the power semiconductor device 100 of each driver controller 120 or 130 is properly driven in response to a signal of the common Hall device 160 to supply current to the three-phase windings 140 and 150. The electron 200, that is, the permanent magnet 190 is rotated.

 4 is a diagram illustrating a three-phase winding of a BLDC dual motor according to another embodiment of the present invention.

 According to another embodiment of the present invention as shown in Figure 4, one core

 Separately separate two three-phase windings (140,150) to (155) to form a stator (170), and divide one core (155) into two to separate two three-phase windings (140, 150) Wind up separately in compartment.

 In more detail, the first three-phase winding 140 of the two three-phase winding is A coil,

 B coil C coil, the second three-phase winding 150 is composed of A 'coil, B' coil, C 'coil, one core 155 is divided into a first compartment and a second compartment The stator 170 is manufactured by alternately winding A coil, B coil, and C coil in the first compartment, and alternately winding A 'coil, B' coil, and C 'coil in the second compartment.

 9 is a drawing substitute photograph showing a BLDC motor to which the three-phase winding of FIG. 4 is applied.

As shown in FIG. 9, the motor casing 240 is formed to have a predetermined internal space in a conventional BLDC motor, and the motor casing 240 is wound around the core 155 by a winding method as illustrated in FIG. 4. Rotating paper-(200) comprising a stator (170) fixedly coupled to the inside of the permanent magnet (190) rotatably inserted into the inside of the stator (170), and the battery-(200) of It is configured to include a motor shaft 220 that is pressed in to transfer the rare power of the rotor 200 to another system, and the Hall element 160 for detecting the position of the rare electron 200.

 2 Here, reference numeral 210 is a bearing and 230 is a hall element signal line.

When the control circuit is connected to the BLDC motor as shown in FIG. 2, each of the driver controllers 120 and 130 is connected to the three-phase windings 140 and 150 of the stator wound in the same manner as in FIG. 4. The three-phase winding of the stator 170 by detecting the position of the rotor 200 of the common Hall element 160

Alternating current is applied to three phases (140, 150).

At this time, the current flowing through the three-phase winding (140, 150) and the permanent magnet constituting the rotor 200

 The interaction of the 190 causes the rare electrons 200 to rotate and the rotational force is transmitted to the motor shaft 220 press-fitted to the rotor 200 and transmitted to another system.

5 to 9 illustrate an example of the present invention.

 In the BLDC hub motor, two driver controllers may be used as the winding method of FIG. 4, and the BLDC motor of FIG. 9 may also use two driver controllers as the winding method of FIG. 3.

<56>. 10a to 10c are graphs for explaining the performance of the BLDC dual motor according to the present invention in comparison with a conventional motor, Figure 10a is a conventional: the performance graph of the motor, Figure 10b is the performance of the dual motor according to the present invention Figure 10c is a comparison graph showing the energy consumption.

 As shown, the dual motor according to the present invention has a higher energy efficiency, instantaneous high torque, and maximum output at a high rotational speed (rpm), compared to a conventional motor. Not only can be obtained, but also the current consumption at high output is low.

 The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is by way of example only and not by way of limitation to the present invention. In addition, it is apparent that any person having ordinary skill in the art may make various modifications and imitations without departing from the scope of the technical idea of the present invention.

 <59> (symbol description)

 100: power semiconductor element 110: brushless motor

 <6 1> 120 ： Driver controller 130 ： Driver controller

 62> 140: Three-phase winding 150: Three-phase winding

 155 ： Core 160 ： Hall element

 (170: stator 180: fixed shaft

 <^ 190: Permanent magnet 200: Rotating paper-

''> '> 210 ： Bearing 220 ： Motor shaft

 <r, 7> 230: Hall element signal line 240: Motor casing

On> 300 ： Power

Claims

<69> [claim]  [Claim 1]  A BLDC motor comprising a stator with a coil wound around a core, a rotor relatively rotated with respect to the stator, and a unitary element for sensing a rotational position of the rotor, the first (first) three-phase winding in one core. And a BLDC dual motor having a stator formed by dividing and winding a second (second) three-phase winding, and dispersing elements common to the respective phases of the first and second three-phase windings. By an electronic position sensing said holso party once the _first three-phase winding or the second three first and second BLDC dual motor that comprises a multiple drivers controls the tukjing for applying a current to the three-phase phase winding Device:.  [Claim 2]  The method of claim 1,  When the first three-phase winding is made of A coil, B coil, C coil, the second three-phase winding is made of A 'coil, B' coil, C 'coil,  A coil and A 'coil, B coil and B' coil, C coil and C 'coil are tied together and alternately  BLDC dual motor device, characterized in that the stator is made by winding the core.  [Claim 3]  The method of claim 1,  The first three-phase winding is made of A coil, B coil, C coil, the second three winding Consisting of A 'coil, Β ¹ coil and C' coil,  One core is divided into a first compartment and a second compartment, and A coil, B coil, and C coil are alternately wound around the first compartment, and the 'A' coil, the B 'coil, and the C' coil are wound in the second compartment. BLDC dual motor device characterized in that the stator is made by alternately winding