CN112531978A

CN112531978A - Multi-mode adjustable motor system and regulation and control method thereof

Info

Publication number: CN112531978A
Application number: CN201910875531.8A
Authority: CN
Inventors: 强文
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2021-03-19
Anticipated expiration: 2039-09-17
Also published as: CN112531978B

Abstract

The invention discloses a multimode adjustable motor system, wherein a concave platform is arranged on the periphery of a shell of a motor body; a plurality of battery packs are arranged in the concave platform at intervals; the rectifying module is arranged on a concave table between two adjacent battery packs and comprises two first controllable switching tubes connected in series; the inversion module is arranged on the concave table between two adjacent battery packs and comprises two second controllable switch tubes connected in series; the positive end of each battery pack, the first end of the rectifying module and the first end of the inverting module are connected together, the negative end of each battery pack, the second end of the rectifying module and the second end of the inverting module are connected together, the connecting point of two first controllable switching tubes connected in series in the rectifying module penetrates through the shell to be connected with the motor stator winding, and the connecting point of two second controllable switching tubes connected in series in the inverting module penetrates through the shell to be connected with the motor stator winding.

Description

Multi-mode adjustable motor system and regulation and control method thereof

Technical Field

The invention relates to the technical field of motors, in particular to a multi-mode adjustable motor system and a regulation and control method thereof.

Background

An electric motor is a device that converts electrical energy into mechanical energy. The electromagnetic power generating device utilizes an electrified coil to generate a rotating magnetic field and acts on a rotor to form magnetoelectric power rotating torque. The motors are classified into dc motors and ac motors according to the power sources used, and most of the motors in the power system are ac motors, which may be synchronous motors or asynchronous motors. The motor mainly comprises a stator and a rotor, and the direction of the forced movement of the electrified conducting wire in the magnetic field is related to the current direction and the magnetic induction line direction. The working principle of the motor is that the magnetic field exerts force on current to rotate the motor. The motor is widely applied to various large technical fields, the motor is generally subjected to rotating speed closed-loop control at present through control over starting, accelerating, running, decelerating and stopping of the motor, the timeliness of the rotating speed closed-loop control is not high, the actual rotating speed needs to be fed back to a remote controller for differential analysis and then feedback control is carried out, the rotating speed precision of the motor is not high, and the feedback speed regulation is relatively delayed.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide a multi-mode adjustable motor system and a regulation and control method thereof, wherein a battery pack, a rectifier module and an inverter module are arranged on a motor body, the braking energy of a motor is recovered into the battery pack, and when the actual rotating speed of the motor deviates from the set rotating speed, the electric energy in the battery pack is directly compensated to the input end of a motor stator on site so as to adjust the rotating speed of the motor to the set rotating speed, so that the real-time performance of the adjustment of the rotating speed of the motor is improved, the rotating speed output accuracy of the motor is effectively improved, and the technical problem of the lag of the adjustment of the rotating speed of the motor is.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a multimode adjustable motor system comprising:

the motor comprises a motor body, wherein a concave platform is arranged on the periphery of a shell of the motor body;

a plurality of battery packs disposed at intervals in the recessed table;

the rectifying module is arranged on the concave table between two adjacent battery packs and comprises two first controllable switching tubes connected in series;

the inversion module is arranged on the concave table between two adjacent battery packs and comprises two second controllable switch tubes connected in series;

a speed measuring sensor disposed in the motor body; and

the local controller is arranged on the shell and is respectively connected with the speed measuring sensor, the rectifying module control end and the inverting module control end;

the positive end of each battery pack, the first end of the rectifying module and the first end of the inversion module are connected together, the negative end of each battery pack, the second end of the rectifying module and the second end of the inversion module are connected together, two connecting points of two series-connected first controllable switch tubes in the rectifying module penetrate through the shell and are connected with the motor stator winding, and two connecting points of two series-connected second controllable switch tubes in the inversion module penetrate through the shell and are connected with the motor stator winding.

Preferably, the bottoms of the battery pack, the rectifying module and the inversion module are respectively attached and fixed to the bottom of the concave station, and the tops of the battery pack, the rectifying module and the inversion module protrude out of the concave station for a certain distance; axial two ends of each battery pack, each rectifying module and each inverting module are respectively clamped at two axial ends of the concave station, the battery packs are symmetrically distributed on the periphery of the shell, the rectifying modules are symmetrically distributed on the periphery of the shell, and the inverting modules are symmetrically distributed on the periphery of the shell; each group battery, rectification module, contravariant module set up at an interval each other.

Preferably, the three battery packs are symmetrically arranged in the concave table at intervals, an interval is formed between every two adjacent battery packs, and a rectification module and an inversion module are respectively arranged in each interval.

Preferably, a first annular groove is formed in the shell on the first axial side of the concave station, a first annular conductive connecting line is arranged in the first annular groove, a positive electrode connector is led out from the first axial end of each battery pack, and the positive electrode connector is connected with the first annular conductive connecting line;

and a second annular groove is formed in the shell on the second axial side of the concave station, a second annular conductive connecting line is arranged in the second annular groove, a negative electrode joint is led out from the second axial end of each battery pack, and the negative electrode joint is connected with the second annular conductive connecting line.

Preferably, the rectification module comprises:

the first insulating bush is of a cuboid cavity structure with an open top end, an insulating interlayer is arranged at the center of the first insulating bush in the length direction, so that a first cavity and a second cavity are formed in the first insulating bush, the bottom of the first insulating bush is attached and fixed to the bottom of the concave table, and the front end and the rear end of the first insulating bush are clamped at the two axial ends of the concave table;

the first thyristor is transversely arranged in the first cavity, the anode of the first thyristor is led out from the front end wall of the first insulating bush, the leading-out end of the first thyristor is connected with the second annular conductive connecting wire, and the grid of the first thyristor is led out from the upper end of the first thyristor and is connected with the local controller; and

the second thyristor is transversely arranged in the second cavity, the anode of the second thyristor transversely penetrates through the insulating interlayer and is connected with the cathode of the first thyristor, the cathode of the second thyristor is led out from the rear end wall of the first insulating bush, the led-out end is connected with the first annular conductive connecting wire, and the grid of the second thyristor is led out from the upper end of the second thyristor and is connected with the local controller.

Preferably, the contravariant module includes second insulating bush and third insulating bush, second insulating bush and third insulating bush are a top open-ended cuboid cavity structure, transversely set up a first IGBT in the second insulating bush, transversely set up a second IGBT in the third insulating bush, first IGBT and second IGBT series connection.

Preferably, the gate and the emitter of the first IGBT are led out from the opening of the rectangular parallelepiped cavity, a first insulating layer is covered on the top of the first IGBT, the gate and the emitter of the first IGBT are encapsulated in the first insulating layer, the gate of the first IGBT is led out from the first lateral side of the first insulating layer through a first wire, and the collector of the first IGBT is led out from the bottom of the first insulating layer.

Preferably, the gate and the emitter of the second IGBT are led out from the opening of the cuboid cavity, the top of the second IGBT is covered with a second insulating layer, the gate and the emitter of the second IGBT are led out from the second insulating layer, the bottom of the third insulating bush is connected to the first insulating layer at the top of the second insulating bush, two sides of the second insulating bush and two sides of the third insulating bush are aligned, the emitter of the first IGBT is connected to the collector of the second IGBT through a second wire, and the second wire is led out from the top of the first insulating layer and penetrates through the bottom of the third insulating bush.

Preferably, a first groove is formed in the second lateral side of the top of the first insulating layer, a second groove is correspondingly formed in the second lateral side of the bottom of the third insulating bush, a third wire is arranged in a channel formed by the first groove and the second groove, a first end of the third wire is connected with the second wire, and a second end of the third wire is led out to the second side from the position between the bottom of the third insulating bush and the top of the first insulating layer.

Preferably, the second sides of the second insulating bush and the third insulating bush are attached and fixed to the bottom of the concave table, and the bottom of the second insulating bush and the top of the second insulating layer are clamped at two axial ends of the concave table; a collector leading-out end of the first IGBT is connected with the first annular conductive connecting line, an emitter leading-out end of the second IGBT is connected with the second annular conductive connecting line, and a second end of the third wire penetrates through the shell downwards to be connected with a certain phase winding of the motor stator; leading-out ends of the first IGBT and the second IGBT are led out towards the first side direction and are connected with the local controller;

the joint end of the anode of the second thyristor and the cathode of the first thyristor is led out downwards through a fourth lead and penetrates through the shell to be connected with a certain phase winding of the motor stator.

A regulation and control method of a multi-mode adjustable motor system comprises the following steps:

step one, utilizing the rectification module to recover the braking energy of the motor into the battery pack;

step two, feeding back the recovered energy stored in the battery to a motor stator on site so as to adjust the rotating speed of the motor to a set rotating speed on site;

and step three, maintaining the rotating speed of the motor within a set range through remote control and field compensation.

The invention at least comprises the following beneficial effects:

1. the invention can effectively recover the motor braking energy and compensate the motor braking energy into the motor driving energy consumption, thereby effectively reducing the operation energy consumption of the motor and reducing the braking heat productivity of the motor;

2. the recovered energy is fed back to the motor stator on site to adjust the rotating speed of the motor to a set rotating speed, so that the real-time performance of adjusting the rotating speed of the motor is improved, and the rotating speed accuracy of the motor in operation is improved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic view of the overall structure of a motor body;

fig. 2 is a schematic view of an installation structure of a battery pack;

FIG. 3 is a schematic view of the installation structure of the rectifier module and the inverter module;

FIG. 4 is a schematic structural diagram of a rectifier module;

FIG. 5 is a schematic structural diagram of a first IGBT;

FIG. 6 is a schematic structural diagram of a second IGBT;

fig. 7 is a schematic view of the overall structure of the inverter module.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1-3, the present invention provides a multimode adjustable motor system, which includes a battery pack 200, a rectifier module 400 and an inverter module 300, which are disposed on a motor body 100, wherein when the motor is operated, the braking energy of the motor is recovered to the battery pack 200, and when the actual rotation speed of the motor deviates from the set rotation speed, the electric energy in the battery pack 200 is directly compensated to the input end of the stator of the motor on site, so as to adjust the rotation speed of the motor to the set rotation speed, which not only improves the real-time performance of the rotation speed adjustment of the motor, but also effectively improves the output accuracy of the rotation speed of the motor.

Specifically, a concave platform 110 is arranged on the periphery of the shell of the motor body 100; the three battery packs 200 are symmetrically arranged in the concave table 110 at intervals, an interval 111 is formed between every two adjacent battery packs 200, each interval 111 is provided with a rectifying module 400 and an inverting module 300, and the battery packs 200, the rectifying modules 400 and the inverting modules 300 are arranged at intervals. Each battery pack 200 is symmetrically distributed on the periphery of the housing, the rectification modules 400 are symmetrically distributed on the periphery of the housing, and the inversion modules 300 are symmetrically distributed on the periphery of the housing.

The bottoms of the battery pack 200, the rectifying module 400 and the inversion module 300 are respectively attached and fixed to the bottom of the concave table 110, and the tops of the battery pack 200, the rectifying module 400 and the inversion module 300 protrude out of the concave table 110 for a certain distance, so that output wiring connection is facilitated. Axial two ends of each of the battery pack 200, the rectifying module 400 and the inverter module 300 are respectively clamped at axial two ends of the concave platform 110, so that the battery pack 200, the rectifying module 400 and the inverter module 300 are fixed on the motor body 100, and looseness caused by motor vibration is avoided.

The three groups of rectifier modules 400 form a three-phase rectifier bridge; the inversion module 300 comprises two second controllable switch tubes connected in series, and three groups of inversion modules 300 form a three-phase inversion bridge; and the positive terminal of each battery pack 200, the first terminal of the rectification module 400, and the first terminal of the inverter module 300 are connected in common, and the negative terminal of each battery pack 200, the second terminal of the rectification module 400, and the second terminal of the inverter module 300 are connected in common, so that each battery pack 200 is connected in parallel, a three-phase rectification bridge and a three-phase inverter bridge are respectively connected in parallel at both ends of the battery pack 200, the battery pack 200 is charged through the three-phase rectification bridge, and the direct current in the battery pack 200 is inverted into a three-phase alternating current through the three-phase inverter bridge.

The connection points of two series first controllable switching tubes in the rectifier module 400 penetrate through the housing to be connected with the motor stator winding, so that three paths of output ends of the three rectifier modules 400 are connected to the input ends of the three-phase stator winding; the connection point of two serially connected second controllable switch tubes in the inverter module 300 penetrates through the shell to be connected with the motor stator winding, so that the three output ends of the three inverter modules 300 are also connected to the input end of the three-phase stator winding; the direct current ends of the rectification module 400 and the inversion module 300 are connected in parallel to the positive and negative ends of the battery pack 200.

Meanwhile, a speed sensor for detecting the rotation speed of the rotor is provided in the motor body 100. A local controller is arranged on the shell, a comparison module is arranged in the local controller, the local controller is connected with a remote main controller, and the local controller is respectively connected with the speed measuring sensor, the control end of the rectification module 400 and the control end of the inversion module 300, namely, each controllable switch is controlled by the local controller; when the motor is braked, the output voltage of the three-phase stator winding is adjusted by adjusting the switching frequency of each first controllable switching tube in the rectifying module 400, so that the battery pack 200 is charged, the braking energy is recovered into the battery pack 200, and the braking heat of the motor is effectively reduced. The local controller receives the actual rotating speed collected by the speed measuring sensor and the set rotating speed fed back by the remote main controller, differential comparison is carried out through the comparison module, the switching frequency of the inverter bridge is adjusted according to the phase difference value between the actual rotating speed and the set rotating speed to adjust the output current value of the battery pack 200, and the output current value is fed back to the stator winding, so as to compensate the difference between the actual rotating speed and the set rotating speed of the motor, adjust the rotating speed output of the motor, improve the rotating speed precision of the motor, effectively improve the real-time performance of adjustment, realize on-site feedback adjustment, in the prior art, the actual rotating speed signal is required to be transmitted to a remote controller, and the remote controller calculates the rotating speed deviation, the excitation signal is adjusted and then transmitted to the local motor, the signal transmission path is far, the real-time performance is not high, and the energy consumption of the motor is increased.

In the above technical solution, in order to realize the parallel connection among the battery pack 200, the inverter module 300 and the rectifier module 400, a first annular groove 121 is formed on the housing on the first side of the concave 110 in the axial direction, a first annular conductive connection line is disposed in the first annular groove 121, and the first annular conductive connection line is disposed in the first annular groove 121 in an insulating manner so as to be mounted and fixed. An anode connector is led out from the first axial end of each battery pack 200, the anode connector is located at the upper end of the concave table 110, and the anode connector is connected with the first annular conductive connecting line.

Similarly, a second annular groove 122 is formed in the housing on a second axial side of the concave table 110, a second annular conductive connection line is disposed in the second annular groove 122, and the second annular conductive connection line is disposed in the second annular groove 122 in an insulated manner so as to be mounted and fixed. A negative electrode connector is led out from the axial second end of each battery pack 200, the negative electrode connector is positioned at the upper end of the concave table 110, and the negative electrode connector is connected with the second annular conductive connecting wire. The first annular conductive connecting line is equivalent to a direct current positive connecting line, the second annular conductive connecting line is equivalent to a direct current negative connecting line, and the positive electrode and the negative electrode of the battery pack 200 are connected to the direct current positive and negative connecting lines.

In the above technical solution, the rectification module 400 includes a first insulation bushing 410 and a first thyristor and a second thyristor arranged therein, specifically, the first insulation bushing 410 is a rectangular parallelepiped cavity structure with an open top end, an insulation interlayer 440 is arranged at the center of the first insulation bushing 410 in the length direction so as to form a first cavity and a second cavity in the first insulation bushing 410, the bottom of the first insulation bushing 410 is attached and fixed to the bottom of the concave table 110, and two ends of the front bottom and the rear bottom of the first insulation bushing 410 are clamped at two ends of the concave table 110 in the axial direction, so that the first insulation bushing 410 is fixedly installed.

The first thyristor is transversely arranged in the first cavity, as shown in fig. 4, the anode a1 of the first thyristor is led out from the front end wall of the first insulating bush 410, and the led-out end is connected with the second annular conductive connecting wire, and the gate G3 of the first thyristor is led out from the upper end of the first thyristor and is connected with the local controller.

The second thyristor is transversely arranged in the second cavity, an anode A2 of the second thyristor transversely penetrates through the insulating interlayer 440 to be connected with a cathode K1 of the first thyristor, a cathode K2 of the second thyristor is led out from the rear end wall of the first insulating bush 410, the led-out end is connected with the first annular conductive connecting wire, and a grid G4 of the second thyristor is led out from the upper end of the second thyristor and is connected with the local controller.

From the above, the first thyristor and the second thyristor are connected in series, the anode a1 of the first thyristor is connected with the dc negative connection line, and the cathode K2 of the second thyristor is connected with the dc positive connection line, so that the three-phase rectifier bridge is connected in parallel at two ends of the battery pack 200, and the gate G3 of the first thyristor and the gate G4 of the second thyristor are controlled by the local controller. The common connection end 420 of the second thyristor anode K1 and the first thyristor cathode a2 is led out downwards through a fourth wire 430 and penetrates through the shell to be connected with a phase winding of the motor stator, and the common connection end 420 of the three rectifier modules 400 is connected to a three-phase winding coil connection end of the motor stator, so that the three-phase stator winding is connected to two ends of the battery pack 200 through a three-phase rectifier bridge. When the motor is braked, electromotive force generated on the stator winding is transmitted to two ends of the battery pack 200 through the three-phase rectifier bridge to be charged, the local controller controls the switching frequency of the thyristors in the three-phase rectifier bridge so as to complete the charging process of the battery pack 200, when the motor braking process is finished, the three-phase rectifier bridge is disconnected, and the single charging process is finished.

As shown in fig. 5 to 7, the inverter module 300 includes a second insulating spacer 310 and a third insulating spacer 330, the second insulating spacer 310 and the third insulating spacer 330 are rectangular parallelepiped cavity structures with open top ends, a first IGBT320 is transversely disposed in the second insulating spacer 310, a second IGBT340 is transversely disposed in the third insulating spacer 330, and the first IGBT320 and the second IGBT340 are connected in series.

Specifically, the gate G1 and the emitter E1 of the first IGBT320 are led out from the opening of the rectangular parallelepiped cavity, a first insulating layer 321 is covered on the top of the first IGBT320, the gate G1 and the emitter E1 of the first IGBT320 are encapsulated in the first insulating layer 321, a connector 324 is connected to the gate of the first IGBT320, the connector 324 is led out from the first lateral side of the first insulating layer 321 through a first wire 325, a conductive connector 328 is arranged on the first lateral wall of the second insulating bush 310 of the lead-out terminal for facilitating wiring, and the collector C1 of the first IGBT320 is led out from the bottom of the first insulating layer 321 through the connector 311. A through hole 326 is opened in the first insulating layer 321 at the upper end of the connection line 323 of the emitter E1 of the first IGBT320, and the through hole 326 is in contact with the connection line 323.

The gate G2 and the emitter E2 of the second IGBT340 are led out from the opening of the rectangular parallelepiped cavity, the top of the second IGBT340 is covered with a second insulating layer 341, the gate G2 of the second IGBT340 is led out from the second insulating layer 341 through a joint 344, the emitter E2 connecting wire 343 of the second IGBT340 is led out from the second insulating layer 341 through a joint 345, the bottom of the third insulating bush 330 is connected to the first insulating layer 321 on the top of the second insulating bush 310, so that the two insulating bushes are fixed in an insulating manner, and two sides of the second insulating bush 310 and two sides of the third insulating bush 330 are aligned to facilitate installation in the recessed table 110.

A through hole 346 corresponding to the through hole 326 is opened in the third insulating liner 330 at the bottom of the collector C2 of the second IGBT340, and the through hole 346 is in contact with the collector C2 of the second IGBT 340. The emitter E1 of the first IGBT320 is connected to the collector C2 of the second IGBT340 by a second wire 329, the second wire 329 is located in the through hole 326 and the through hole 346, and the second wire 329 is led out from the top of the first insulating layer 321 and penetrates the bottom of the third insulating liner 330, so that the two IGBTs are connected in series.

A first groove 327 is formed in the second lateral side of the top of the first insulating layer 321, the first groove 327 contacts the second side of the bottom of the through hole 326, a second groove 347 is correspondingly formed in the second lateral side of the bottom of the third insulating bush 330, the second groove 347 contacts the second side of the bottom of the through hole 346, a third conducting wire 322 is arranged in a channel formed by the first groove 327 and the second groove 347, a first end of the third conducting wire 322 is connected with the second conducting wire 329, a second end of the third conducting wire 322 is led out from the space between the bottom of the third insulating bush 330 and the top of the first insulating layer 321 to the second side, and specifically, the second end of the third conducting wire 322 penetrates through the housing downwards to be connected with a phase winding of the motor stator.

The second sides of the second insulating bush 310 and the third insulating bush 330 are fixed to the bottom of the concave table 110 in an attaching manner, the bottom of the second insulating bush 310 and the top of the second insulating layer 341 are clamped at two axial ends of the concave table 110, so that the inverter module 300 is installed and fixed in the concave table 110, the leading-out end 311 of the collector C1 of the first IGBT320 is connected with the first annular conductive connecting wire, the leading-out end 345 of the emitter E2 of the second IGBT340 is connected with the second annular conductive connecting wire, so that the inverter module 300 is connected between the positive and negative connecting wires of the direct current, that is, connected in parallel at two ends of the positive and negative electrodes of the battery pack 200, and the three inverter modules 300 form a three-phase.

The leading-out terminal 328 of the grid G1 of the first IGBT320 and the leading-out terminal 344 of the grid G2 of the second IGBT340 are led out towards the first side direction and are connected with the local controller.

The method for regulating and controlling the rotating speed of the motor comprises the following steps:

in the motor braking process, the rectifying module is utilized to recover the motor braking energy to the battery pack, so that the motor braking energy is effectively recovered, the operation energy consumption of the motor is effectively reduced, and the braking heat of the motor is reduced;

step two, when the deviation of the motor rotating speed and the set rotating speed is detected to exceed a set range on site, the recovered energy stored in the battery is fed back to the motor stator on site, so that the motor rotating speed is adjusted to the set rotating speed on site; the recovered energy is fed back to the motor stator on site to adjust the rotating speed of the motor to a set rotating speed, so that the real-time performance of adjusting the rotating speed of the motor is improved, the rotating speed accuracy of the motor is improved, and meanwhile, the recovered braking energy is compensated to the driving energy consumption of the motor, so that the system energy consumption is reduced;

and step three, in the normal operation process of the motor, the rotating speed of the motor is maintained within a set range through a remote control and field compensation mode.

Specifically, the first IGBT320 and the second IGBT340 are connected in series, the emitter E2 of the second IGBT340 is connected to the dc negative connection line, and the collector C1 of the first IGBT320 is connected to the dc positive connection line, so that the three-phase inverter bridge is connected in parallel to the two ends of the battery pack 200, and the gate G1 of the first IGBT320 and the gate G2 of the second IGBT340 are controlled by the local controller. The common connection end 329 of the emitter E1 of the first IGBT320 and the collector C2 of the second IGBT340 is led out downwards through a third lead 422 and penetrates through the shell to be connected with a certain phase winding of the motor stator, and the common connection end 329 in the three inverter modules 300 is connected to the three-phase winding coil connection end of the motor stator, so that the two ends of the battery pack 200 are connected to the three-phase stator winding connection ends through a three-phase inverter bridge. When the actual rotating speed of the motor deviates from the set rotating speed, the local controller controls the switching frequency of the IGBT grid in the three-phase inverter bridge, and the direct current in the battery pack 200 is inverted and then compensated to the stator winding, so that the rotating speed deviation is eliminated, the rotating speed output precision of the motor is improved, and meanwhile, the real-time performance of rotating speed compensation is improved through on-site feedback compensation.

In conclusion, the invention can effectively recover the motor braking energy and compensate the motor braking energy into the motor driving energy consumption, thereby effectively reducing the operation energy consumption of the motor and reducing the braking heat productivity of the motor; meanwhile, the recovered energy is fed back to the motor stator on site to adjust the rotating speed of the motor to the set rotating speed, so that the real-time performance of adjusting the rotating speed of the motor is improved, and the rotating speed accuracy of the motor in operation is improved.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A multimode adjustable motor system, comprising:

a plurality of battery packs disposed at intervals in the recessed table;

a speed measuring sensor disposed in the motor body; and

2. The multimode adjustable motor system of claim 1, wherein the bottoms of the battery pack, the rectifier module and the inverter module are respectively attached and fixed to the bottom of the concave station, and the tops of the battery pack, the rectifier module and the inverter module protrude from the concave station by a certain distance; axial two ends of each battery pack, each rectifying module and each inverting module are respectively clamped at two axial ends of the concave station, the battery packs are symmetrically distributed on the periphery of the shell, the rectifying modules are symmetrically distributed on the periphery of the shell, and the inverting modules are symmetrically distributed on the periphery of the shell; each group battery, rectification module, contravariant module set up at an interval each other.

3. The multimode adjustable motor system of claim 2, wherein three of the battery packs are symmetrically spaced in the recessed platform, a spacing interval is formed between two adjacent battery packs, and a rectifying module and an inverting module are respectively disposed in each spacing interval.

4. The multimode adjustable motor system of claim 3, wherein a first annular groove is formed in the housing on a first axial side of the recessed table, a first annular conductive connecting line is disposed in the first annular groove, and a positive terminal is led out from a first axial end of each battery pack and connected to the first annular conductive connecting line;

5. The multimode adjustable motor system of claim 4, wherein the commutation module comprises:

6. The multimode adjustable motor system of claim 5, wherein the inverter module comprises a second insulation bushing and a third insulation bushing, the second insulation bushing and the third insulation bushing are of a rectangular parallelepiped cavity structure with an open top end, a first IGBT is transversely arranged in the second insulation bushing, a second IGBT is transversely arranged in the third insulation bushing, and the first IGBT and the second IGBT are connected in series.

7. The multimode tunable motor system according to claim 6, wherein the gate and the emitter of the first IGBT are led out from the opening of the rectangular parallelepiped cavity, a first insulating layer is covered on the top of the first IGBT, the gate and the emitter of the first IGBT are encapsulated in the first insulating layer, the gate of the first IGBT is led out from the first lateral side of the first insulating layer through a first wire, and the collector of the first IGBT is led out from the bottom of the first insulating layer.

8. The multimode adjustable motor system according to claim 7, wherein the gate and the emitter of the second IGBT are led out from the opening of the rectangular parallelepiped cavity, a second insulating layer is covered on the top of the second IGBT, the gate and the emitter of the second IGBT are led out from the second insulating layer, the bottom of the third insulating bush is connected to the first insulating layer on the top of the second insulating bush, two sides of the second insulating bush and the third insulating bush are aligned, the emitter of the first IGBT is connected to the collector of the second IGBT through a second conducting wire, and the second conducting wire is led out from the top of the first insulating layer and penetrates through the bottom of the third insulating bush.

9. The multimode adjustable motor system of claim 8, wherein a first groove is formed in a second lateral side of the top of the first insulating layer, a second groove is correspondingly formed in a second lateral side of the bottom of the third insulating bushing, a third conducting wire is arranged in a channel formed by the first groove and the second groove, a first end of the third conducting wire is connected with the second conducting wire, and a second end of the third conducting wire is led out from a position between the bottom of the third insulating bushing and the top of the first insulating layer to the second side;

the second sides of the second insulating bush and the third insulating bush are attached and fixed to the bottom of the concave table, and the bottom of the second insulating bush and the top of the second insulating layer are clamped at two axial ends of the concave table; a collector leading-out end of the first IGBT is connected with the first annular conductive connecting line, an emitter leading-out end of the second IGBT is connected with the second annular conductive connecting line, and a second end of the third wire penetrates through the shell downwards to be connected with a certain phase winding of the motor stator; leading-out ends of the first IGBT and the second IGBT are led out towards the first side direction and are connected with the local controller;

10. A method of regulating a multimode adjustable motor system as in claim 9, comprising the steps of: