CN111786537A

CN111786537A - Motor generator

Info

Publication number: CN111786537A
Application number: CN201910269934.8A
Authority: CN
Inventors: 裘根富
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-10-16

Abstract

A motor generator is characterized in that a main power circuit of a dual-power converter is connected with a battery pack, and a standby power circuit is connected with a DC-DC voltage reduction constant-current constant-voltage output end; the motor starting power supply is powered by the battery pack and provides rated voltage for the motor driving module through the boosting module; the motor drives the planetary gear to force the generator to accelerate and rotate, the stator winding of the generator generates induction current, the induction current is connected with the input end of the DC-DC converter through rectification and voltage stabilization, the constant current and the constant voltage are output to the bus standby power circuit through DC-DC conversion voltage reduction, when the driving motor reaches the rated rotating speed, the dual power supply is converted into the standby power circuit to output the rated voltage to the driving motor, meanwhile, the main power circuit of the dual power supply converter is automatically turned off, and the DC-DC voltage reduction constant current and the constant voltage are output in parallel to supply power to the load; and voltage circulation, conversion and recombination of the motor generator are formed.

Description

Motor generator

Technical Field

The invention relates to the technical field of motors, generators and new energy, in particular to a motor generator which becomes a renewable power supply.

Background

The problems of energy safety and environmental pollution which are always associated with the automobile are two most troublesome bottleneck problems, the oil safety and resources are short, and harmful substances discharged from tail gas when the automobile runs destroy the environment and human health.

The electric vehicle has modes of hybrid power, plug-in hybrid power, fuel cell, pure electric vehicle and the like, is limited by the level of power battery technology and charging technology, has restriction factors of energy density, endurance mileage, charging speed, construction of a charging station and the like, and becomes a bottleneck for developing the pure electric vehicle.

As is known well, the motor is a process of converting electric energy into mechanical energy, the generator is a process of converting mechanical energy, the motor drives the generator to rotate at an increased speed through the planetary gear, the mutual conversion of energy becomes simpler and higher, the two machines work independently without interference, and the voltage circulation, conversion and recombination of the motor generator are realized.

Prior art documents: CN201510217219 is a star-shaped electromagnetic POWER generator, CN200680002098 improved tubular generator, US3576458HEAVY OVERVOLTAGE POWER GAP and Toyota developed free piston engine linear generator, which realizes electric energy conversion recombination and continuous output of electric energy, but has relatively low POWER density and application value of mechanical transmission of permanent magnet pistons, and Toyota developed free piston engine linear generator which realizes permanent magnet free piston transmission POWER generation, but drives permanent magnet free pistons to generate POWER by thrust generated by oil gas and consumes petroleum energy.

Disclosure of Invention

The invention provides a motor generator which can solve the problem that the endurance capacity of a power battery is insufficient in the existing new energy automobile technology.

The invention aims to provide a motor M1 driving a planetary gear to force the generator to rotate in an accelerated manner, the energy density of the generator is amplified, the generator is connected with the input end of a multi-output DC-DC conversion module in a rectifying and voltage stabilizing manner, the DC-DC 1 is converted into rated voltage and current required by the motor M1 to supply power to a bus, and voltage circulation, conversion and recombination required by the driving of the motor generator are realized.

In order to solve the technical problem, the technical scheme of the invention is realized as follows:

in one embodiment, the motor generator comprises: the permanent magnet generator comprises a permanent magnet rotor, a rotor iron core, a stator winding, a planetary gear, a speed-increasing gear mechanism, a cooler device, a battery pack voltage boosting and reducing module, a dual-power conversion module, a multi-output DC-DC conversion module, a motor driving module, a generator rectifying and voltage stabilizing module and a power controller; the motor and the generator are coaxial with the planetary gear speed increaser; the power of the generator is larger than that of the motor; the main power supply of the dual-power conversion module is connected with the battery pack, and the standby power supply is connected with the constant-voltage and constant-current output end of the DC-DC 1 conversion module; the motor M1 is started and powered by a main power battery pack, and the battery pack supplies rated voltage to the motor driving module through the boosting module; the motor M1 drives a planetary gear to force the generator to accelerate, a stator winding of the generator generates induction current, the induction current is output through rectification and voltage stabilization and is connected with the input ends of a DC-DC 1 and a DC-DC 2 conversion module, the DC-DC 1 conversion module outputs constant voltage and constant current to a standby power circuit of a motor M1 bus, when the motor M1 is driven to reach the rated rotating speed, the dual-power conversion module is switched into the standby power circuit to output rated voltage and current to the motor M1 driving module, meanwhile, a main power supply of the dual-power conversion module is automatically turned off, and the output end of the DC-DC 2 conversion module supplies power to a load motor M2 through constant current and constant voltage; and voltage circulation, conversion and recombination of the motor generator are formed.

In one embodiment, the permanent magnet rotor is a permanent magnet multi-pole ring rotor, a surface convex permanent magnet rotor, a surface embedded permanent magnet rotor and a built-in permanent magnet rotor, wherein the permanent magnet rotor is divided into an inner permanent magnet rotor and an outer permanent magnet rotor; the permanent magnets are further divided into a rotor and a stator.

In one embodiment, the stator core and the rotor core are made of silicon steel, ferrite and amorphous magnetic conductive material, wherein the amorphous magnetic conductive material is iron-based amorphous alloy; the stator core is an inner stator core and an outer stator core.

In one embodiment, the stator winding comprises a centralized winding and a distributed winding, wherein the distributed winding is divided into a concentric winding and a stacked winding, the concentric winding can be divided into a planar winding and a three-planar winding, the stacked winding can be divided into a single stacked winding and a double-layered stacked winding, and the stacked winding can be divided into a cross winding, a concentric cross winding and a single-double-layer mixed winding; the stator winding magnetic pole is divided into a salient pole type winding and a non-salient pole type winding; the wiring method of the winding is a three-star wiring method and a triangular wiring method.

In one embodiment, the speed increasing gear comprises a parallel shaft gear and a planetary gear, wherein the planetary gear is divided into an outer ring, a planetary gear and a sun gear, the planetary gear support is connected with a motor shaft, the sun gear is connected with a generator shaft, the number of layers of the planetary gear is divided into one-stage, two-stage and multi-stage speed increasing, and the planetary gear is divided into one, two or more.

Optionally, the cooler device includes a motor generator housing, a stator core, a permanent magnet rotor core, and a cooling channel of the planetary gear housing; the motor generator shell is internally provided with a spiral U, W and an S-shaped cooling flow channel, the peripheral surface of the shell is provided with a cooling flow channel inlet and outlet interface, and the casting process is 3D sand core printer casting; the stator core is internally provided with a spiral U, W and an S-shaped cooling flow channel, the hole of the stator core cooling flow channel is formed by a stator punching sheet, the stator core cooling flow channel is sequentially laminated along the central axis direction of the stator core, and the axial direction of the stator core cooling flow channel is provided with a cooling flow channel inlet and outlet interface; the hole of the cooling runner of the permanent magnet rotor core is formed by a rotor core punching sheet, the cooling runner of the permanent magnet rotor core is formed by sequentially laminating along the central axis direction of the permanent magnet rotor core, the inlet of the rotor core cooling runner is connected with the left inner cavity opening of the rotating shaft to form the inlet of the rotating shaft cooling runner, the outlet of the permanent magnet rotor core cooling runner is connected with the right inner cavity opening of the rotating shaft to form the outlet of the rotating shaft cooling runner, and the inlet and the outlet of the rotating shaft cooling runner and a clamping and sealing device form a cooling runner inlet and outlet fixed interface; the planetary gear shell is internally provided with a spiral U, W and an S-shaped cooling flow channel, the peripheral surface of the shell is provided with a cooling flow channel inlet and outlet interface, and the casting process is 3D sand core printer casting.

Furthermore, the inlet and the outlet of a cooling channel of the motor generator shell, the stator core and the permanent magnet rotor core are connected, the outlet of the cooling channel on the peripheral surface of the motor generator shell is connected with the inlet of the stator core cooling channel, the outlet of the stator core cooling channel is connected with the inlet of the permanent magnet rotor core cooling channel, and the inlet on the peripheral surface of the motor generator shell and the outlet of the permanent magnet rotor core cooling channel form a circulating cooling channel of the motor generator.

In one embodiment, the power controller comprises a battery pack voltage boosting and reducing module, a dual-power conversion module, a driving motor M1, a load motor M2 driving module, a generator rectifying and voltage stabilizing module, a multi-output DC-DC conversion module, a high-voltage insulation monitoring module, a detection, acquisition and diagnosis module and a cooler device; the battery pack voltage boosting and reducing module is used for providing a starting power supply for the driving motor M1, and the battery pack voltage reducing module is used for charging the battery pack by a bus standby power supply; the dual power supply conversion module is used for switching a main power supply and a standby power supply; the driving modules of the driving motor M1 and the load motor M2 are used for driving and controlling the driving motor M1 and the load motor M2; the output of the generator rectifying and voltage stabilizing module is connected with the input ends of the DC-DC 1 and DC-DC 2 conversion modules, and a stabilized voltage power supply is provided for multi-output DC-DC conversion; the multi-output DC-DC conversion module is characterized in that the DC-DC 1 conversion module is used for providing a constant-voltage and constant-current power supply for a motor M1 bus, and the DC-D C2 conversion module is used for providing a constant-voltage and constant-current power supply for a motor M2 bus; the high-voltage insulation monitoring module is used for monitoring leakage current faults in real time and disconnecting all power supplies in the circuit; the detection and diagnosis module is used for protecting and driving safe operation of the motor M1 and the generator by voltage, current, rotating speed, temperature and overvoltage and overcurrent; the cooler device is composed of a plurality of layers of oil cooling, air cooling, liquid cooling, cooling pipes and heat absorbing sheets and used for power control heat dissipation.

Furthermore, the multi-output DC-DC conversion module comprises DC-DC 1, DC-DC 2 and DC-DC 3 conversion modules which are connected in parallel and connected with the output end of the generator rectifying and voltage stabilizing module, wherein the output end of the DC-DC 3 conversion module is connected with a vehicle-mounted air conditioner motor to form an electric power supply for the vehicle-mounted air conditioner motor; the DC-DC conversion module outputs power supply voltage in a multi-path mode, one input power supply voltage of the DC-DC converter is connected with the generator rectification and voltage stabilization module and is converted into a plurality of output power supply voltages to be output to a plurality of output ends to provide constant voltage and constant current power supplies for respective loads.

Further, the DC-DC conversion module conversion circuit comprises a forward conversion circuit, a flyback conversion circuit, a full-bridge conversion circuit, a half-bridge conversion circuit and a push-pull conversion circuit.

In one embodiment, the generator power generation process comprises the following steps: the battery pack voltage is boosted to the rated voltage of a driving motor M1, the dual-power conversion modules VT5 and VT6 are disconnected, the battery pack boosting module VT11 is turned on, VT7 is turned off, the electric lifter 2526125 is charged, the VT7 is turned on, VT11 is turned off, the electric lifter 2526134 is discharged, the battery pack voltage and the induced electromotive force of the electric lifter 2526185 are superposed, a capacitor C3 is charged to form a boosting main power supply, boosting is formed by PWM switching, the VT8, VT9, VT10, VT12, VT13 and VT14 are switched to supply power to a three-phase motor M1 through SPWM, and the motor M1 is started; the motor M1 drives a planetary gear to force the generator to rotate at an increased speed, the stator winding of the generator generates induction current, the induction current is connected with the input end of a multi-output DC-DC conversion module through a rectification voltage stabilization output, the DC-DC 1 converter is converted into rated voltage and current required by the motor M1 of a bus to supply power VT5 and VT6 to the standby power bus, the VT7 and VT11 are switched off, and the dual-power conversion module is switched into the standby power to supply power to the bus driving motor M1; the battery pack voltage reduction module VT7 is on V T11 off, the backup power bus charges a resistor v 2526129, VT11 is on VT7 off VT7 freewheeling, and the resistor v 25261 3 charges a capacitor C4T and the battery pack.

The power supply capacity of the generator is only limited to the electric energy generated and output by the instant rotating speed of the generator, and the load is supplied, and the load loss, the inductive load and the pure resistive load are smaller than the electric quantity generated by the instant rotating speed of the generator, otherwise, the generator is under-voltage.

In one embodiment, the dual power supply conversion module comprises a main power circuit of a battery pack voltage boosting and reducing module, a standby power circuit DC-DC 1 conversion module output end and a driving module of a driving motor M1, when VT5 and VT6 are turned off, a battery pack voltage boosting module VT11 is turned off, the battery pack voltage is superposed with electromotive force induced by a capacitor L3, a capacitor C3 is charged to form a voltage boosting power supply to provide rated voltage for the driving motor M1, and a motor generator is started; when the motor M1 is driven to reach a rated rotating speed, the generator is connected with the input end of the multi-output DC-DC conversion module in a rectifying and voltage-stabilizing mode, the DC-DC 1 converter is converted into rated voltage and current required by the motor M1 to supply power to a bus, the dual-power conversion modules VT5 and VT6 are connected, the battery pack voltage boosting modules VT7 and VT11 are disconnected, the generator is formed to provide circulating voltage for the motor M1, and the battery pack is stopped in charging and discharging.

Further, the motor generator supplies power to a load motor M2, and when the motor generator operates in a circulating voltage mode, the DC-DC 2 conversion module outputs a constant current and a constant voltage in parallel to supply power to a load motor M2.

Optionally, the motor generator relates to a power supply of new energy pure electric vehicle power, a motor generator and a driving wheel motor assembly.

Further, in the new energy pure electric vehicle power assembly, the battery pack is a starting power supply of the motor generator, the motor generator is a power supply, the load motor M2 is a wheel driving motor, and the assembly of the power supply and the wheel driving motor of the new energy pure electric vehicle is formed.

Further, the motor generator, wherein the power of the motor M1 is 60KW, the power of the planetary gear is 400KW, the power of the generator is 100KW, when the motor M1 drives the planetary gear to force the generator to rotate at an increased speed, the energy density of the generator is amplified, the output power of the generator is about 400KW, the generator is connected to the input end of the multi-output DC-D C conversion module in a rectifying and voltage-stabilizing manner, the DC-DC 1 is converted into the rated voltage and current required by the load to supply power to the bus, the dual-power conversion module VT5 and VT6 are turned on, the battery voltage boosting module VT7 and VT11 are turned off, so that the generator is configured to provide the circulating voltage to the motor M1, thereby realizing the voltage circulation, the conversion and the recombination of the motor generator, the output power of the generator is greater than the driving power of the motor M1, and the electric energy generated by the generator is, and the balance electric energy is output in parallel at constant current and constant voltage through the DC-DC 2 conversion module to supply power to the wheel driving motor M2.

Further, the motor generator delivers electric energy to grid-connected power grid, wherein the power of the motor M1 is 60KW, the power of the planetary gear is 400KW, and the power of the generator is 100KW, when the motor M1 drives the planetary gear to force the generator to rotate at an increased speed, the energy density of the generator is amplified, the output power of the generator is about 400KW, the generator is connected with the input end of the multi-output DC-DC conversion module in a rectifying and voltage-stabilizing manner, the DC-DC 1 is converted into rated voltage and current required by a load to supply power to the bus, the dual-power conversion modules VT5 and VT6 are switched on, the battery pack voltage boosting modules VT7 and VT11 are switched off to form that the generator provides circulating voltage to the motor M1 to realize the voltage circulation, conversion and recombination of the motor generator, the output power of the generator is greater than the driving power of the motor M1, and the electric energy generated by the generator is greater than, and the balance electric energy is transmitted to the power grid through AC-DC conversion.

In one embodiment, the ceramic bearing, the permanent magnet suspension bearing, the electromagnetic suspension bearing and the air suspension bearing related to the motor generator; and an emergency power supply, a generator set and a vehicle power supply.

The invention has the beneficial effects that: the invention has simple structure design but better structure design, the motor drives the generator to rotate in an accelerating way through the planetary gear, the energy density of the generator is obviously improved, the voltage circulation, conversion and recombination required by the driving of the motor generator are realized, the balance voltage is connected with the load, and the problem of insufficient endurance mileage of the new energy automobile can be solved.

Drawings

The invention will be further illustrated with reference to the following figures and examples:

FIG. 1 is a structural side view of a motor generator assembly;

FIG. 2 is a schematic block diagram of a motor generator assembly power control;

in the figure: a motor stator winding 101; a motor permanent magnet rotor 102; a motor stator core 103; a generator stator winding 104; a generator permanent magnet rotor 105; a generator stator core 106; a planetary gear speed increaser 107; motor M1; a generator G; motor M2 load motor and drive wheel motor;

Detailed Description

The invention is described in more detail below with reference to the following figures and examples:

example 1

In a specific embodiment, the motor-generator assembly structure of the motor-generator assembly of fig. 1 includes a motor M1, a planetary gear speed increaser 107, a generator G, and a motor-generator assembly housing, the motor M1 includes a permanent magnet rotor 101, a motor M1 stator winding 103, the generator includes a permanent magnet rotor 104, a generator stator winding 106, a planet carrier of the planetary gear speed increaser 107 is connected with a rotating shaft of the motor M1, a sun wheel shaft is connected with a rotating shaft of the generator G, the motor-generator assembly housing is used for supporting the motor M1, the planetary gear speed increaser 107, and the generator G, when the motor M1 drives the planetary gear to force the generator to rotate at an increased speed, the energy density of the generator is amplified, the motor M1 rotates one circle to multiple circles, the electric energy output by the generator is much higher than the electric energy consumed by the motor M1, the electric, the nominal balance of electrical energy may supply the load motor M2.

Example 2

In an embodiment, the power control cycle voltage self-running mode of the motor generator assembly of fig. 2:

according to the battery pack boosting process, the battery pack boosting module VT7 is switched on, the VT11 is switched off, the dual-power-supply conversion module VT5 is switched off, the VT6 is switched off, the battery pack and the L3 are subjected to bus discharge at the same time and form boosting through PWM switching, and the VT8, the VT9, the VT10, the VT12, the VT13 and the VT14 are switched to supply power to the three-phase motor M1 through SPWM.

In the generator rectifying and filtering process, the rectifying and voltage-stabilizing modules D1, D2, D3, D8, D9, D1 and C1 rectify and filter AC-DC conversion.

The DC-DC 1 conversion process completes DC-

A DC1 conversion module; when VT1, VT4 are turned on, and VT2, VT3 are turned off, positive voltage is obtained on the transformer; when VT2, VT3 are turned on, and VT1, VT4 are turned off, negative voltage is obtained on the transformer; the DC-AC conversion is completed through the alternate conduction of 4 IGBTs, and the voltage reduction conversion is completed through a transformer: the AC-DC conversion is completed by 4 diodes in the later stage.

The standby power supply circuit is used for charging the battery pack, the VT5 and the VT6 are conducted to supply power to the main bus through pre-stage rectification filtering and DC-DC 1 conversion, when the power converted from the bus standby power supply is obtained from the C3, and when the VT7 is conducted and the VT11 is turned off, the voltage on the C3 charges the battery and the L3, and the DC-DC 1 conversion is completed to charge the main power battery pack.

The generator circularly supplies power to the motor M1, the standby power circuit is converted from DC-DC 1 through preceding stage rectification and filtering, the battery pack voltage boosting and reducing modules VT7 and VT11 are turned off, the dual power conversion modules are turned on to VT5 and VT6, and the standby power bus supplies power to the motor M1 to realize voltage circulation and conversion.

The power control VT5, VT6, VT7, VT8, VT9, VT10, VT11, VT12, VT13 and VT14 are all turned off, the battery is not charged and not discharged, and the motor-generator assembly is stopped.

Example 3

In a specific embodiment, the motor generator delivers electric energy to a grid-connected state, wherein the power of the motor M1 is 60KW, the power of the planetary gear is 400KW, and the power of the generator is 100KW, when the motor M1 drives the planetary gear to force the generator to rotate at an increased speed, the energy density of the generator is amplified, the output power of the generator is about 400KW, the rectifying and voltage-stabilizing of the generator is connected with the input end of a multi-output DC-DC conversion module, the DC-DC 1 is converted into rated voltage and current required by a load to supply power to a bus, the dual-power conversion modules VT5 and VT6 are switched on, the battery pack voltage boosting modules VT7 and VT11 are switched off, so that the generator is configured to provide a circulating voltage to the motor M1 to realize the voltage circulation, conversion and recombination of the motor generator, the output power of the generator is greater than the driving power of the motor M1, and the electric energy, and the balance electric energy is transmitted to the power grid through AC-DC conversion.

Example 4

In a specific embodiment, the power of the motor M1 is 60KW, the power of the planetary gear is 400KW, and the power of the generator is 100KW, when the motor M1 drives the planetary gear to force the generator to rotate at an increased speed, the energy density of the generator is amplified, the output power of the generator is about 400KW, the generator is connected to the input end of the multi-output DC-DC conversion module through rectification and voltage regulation, the DC-DC 1 is converted into the rated voltage and current required by the load to supply power to the bus, the dual-power-supply conversion modules VT5 and VT6 are turned on, the battery-pack voltage boosting modules VT7 and VT11 are turned off, so that the generator is configured to provide the circulating voltage to the motor M1, so as to realize voltage circulation, conversion and recombination of the motor generator, and the output power of the generator is greater than the driving power of the motor M1, the electric energy generated by the generator is larger than the electric energy consumed by the motor M1, and the balance electric energy is output in parallel at constant current and constant voltage through the DC-DC 2 conversion module to supply power to the wheel driving motor M2 so as to drive the new energy pure electric vehicle to run.

Example 5

In a specific embodiment, the electric aircraft of the motor generator in fig. 2, the motor generator, where the power of the motor M1 is 60KW, the power of the planetary gear is 400KW, and the power of the generator is 100KW, when the motor M1 drives the planetary gear to force the generator to rotate at an increased speed, the energy density of the generator is amplified, the output power of the generator is about 400KW, the generator is connected to the input end of the multi-output DC-DC conversion module in a rectifying and voltage-stabilizing manner, the DC-DC 1 is converted into the rated voltage and current required by the load to supply power to the bus, the dual-power conversion modules VT5, VT6 are turned on, the battery voltage boosting modules VT5, VT11 are turned off, the generator is configured to provide the circulating voltage to the motor M1, so as to implement the voltage circulation, conversion and recombination of the motor generator 48378, and the output power, the electric energy generated by the generator is larger than the electric energy consumed by the motor M1, and the balance electric energy is output in parallel at constant current and constant voltage through the DC-DC 2 conversion module to supply power to the aircraft driving rotor motor M2 and drive the aircraft rotor to fly.

Example 6

In a specific embodiment, the emergency power supply of the motor generator is composed of a motor generator assembly, a power controller, a battery pack starting power supply AC-DC isolation transformer and a dual-power supply change-over switch device, and direct-current electric energy generated by the motor generator is inverted into alternating-current electric energy emergency power supply.

The motor generator is characterized in that the power of the motor M1 is 60KW, the power of a planetary gear is 400KW, the power of the generator is 100KW, when the motor M1 drives the planetary gear to force the generator to rotate in an accelerated manner, the energy density of the generator is amplified, the output power of the generator is about 400KW, the generator is connected with the input end of a multi-output DC-DC conversion module in a rectifying and voltage-stabilizing manner, the DC-DC 1 is converted into rated voltage and current required by a load to supply power to a bus, the dual-power-supply conversion modules VT5 and VT6 are connected, the battery pack voltage boosting modules VT7 and VT11 are switched off, the generator is formed to provide circulating voltage for the motor M1, the balance electric energy is output in parallel at constant current and constant voltage through the DC-DC 1 conversion modules, is connected with a DC-AC isolation transformer, Market supermarkets and high-rise buildings provide emergency lighting power supply.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An electric motor generator, comprising: the permanent magnet generator comprises a permanent magnet rotor, a rotor iron core, a stator winding, a planetary gear, a speed-increasing gear mechanism, a cooler device, a battery pack voltage boosting and reducing module, a dual-power conversion module, a multi-output DC-DC conversion module, a motor driving module, a generator rectifying and voltage stabilizing module and a power controller; the motor and the generator are coaxial with the planetary gear speed increaser; the power of the generator is larger than that of the motor; the main power supply of the dual-power conversion module is connected with the battery pack, and the standby power supply is connected with the constant-voltage and constant-current output end of the DC-DC 1 conversion module; the motor M1 is powered by a main power battery pack when started, and the battery pack supplies rated voltage to a motor M1 driving module through a voltage boosting module; the motor M1 drives a planetary gear to force the generator to accelerate, a stator winding of the generator generates induction current, the induction current is output through rectification and voltage stabilization and is connected with the input ends of the DC-DC 1 and DC-DC 2 conversion modules, the DC-DC 1 conversion modules output constant voltage and constant current to the bus standby power circuit, when the motor M1 is driven to reach the rated rotating speed, the dual-power conversion modules are switched into the standby power circuit to output rated voltage and current to the motor M1 driving module, meanwhile, the main power of the dual-power conversion module is automatically turned off, and the output end of the DC-DC 2 conversion module supplies power to the load motor M2 at constant current and constant voltage; and voltage circulation, conversion and recombination of the motor generator are formed.

2. The motor-generator of claim 1 wherein the permanent magnet rotors are permanent magnet multi-pole ring rotors, surface salient permanent magnet rotors, surface embedded permanent magnet rotors, and interior permanent magnet rotors, wherein the permanent magnet rotors are divided into inner and outer permanent magnet rotors; the permanent magnets are further divided into a rotor and a stator.

3. A motor generator as claimed in claim 1, wherein said stator and rotor cores are of silicon steel, ferrite, and amorphous magnetically permeable material, wherein said amorphous magnetically permeable material is an iron-based amorphous alloy; the stator core is an inner stator core and an outer stator core.

4. The motor generator of claim 1, wherein said stator windings comprise a concentrated winding and a distributed winding, said distributed winding is divided into a concentric winding and a stacked winding, said concentric winding is divided into a planar winding and a three planar winding, said stacked winding is divided into a single stacked winding and a double stacked winding, said stacked winding is divided into a cross winding, a concentric cross winding and a single double hybrid winding; the stator winding magnetic pole is divided into a salient pole type winding and a non-salient pole type winding; the wiring method of the winding is a three-star wiring method and a triangular wiring method.

5. The motor generator of claim 1, wherein the step-up gear comprises a parallel shaft gear and a planetary gear, the planetary gear is divided into an outer ring, a planetary gear and a sun gear, the planetary gear support is connected with the motor shaft, the sun gear is connected with the generator shaft, the number of planetary gear layers is divided into one step, two steps and multi-step speed increasing, and the planetary gear is divided into one, two or more components.

6. The motor-generator of claim 1 wherein the cooler means comprises a cooling flow path for the motor-generator housing, the stator core, the permanent magnet rotor core, and the planetary gear housing; the motor generator shell is internally provided with a spiral U, W and an S-shaped cooling flow channel, the peripheral surface of the shell is provided with a cooling flow channel inlet and outlet interface, and the casting process is 3D sand core printer casting; the stator core is internally provided with a spiral U, W and an S-shaped cooling flow channel, the hole of the stator core cooling flow channel is formed by a stator punching sheet, the stator core cooling flow channel is sequentially laminated along the central axis direction of the stator core, and the axial direction of the stator core cooling flow channel is provided with a cooling flow channel inlet and outlet interface; the hole of the cooling runner of the permanent magnet rotor core is formed by a rotor core punching sheet, the cooling runner of the permanent magnet rotor core is formed by sequentially laminating along the central axis direction of the permanent magnet rotor core, the inlet of the rotor core cooling runner is connected with the left inner cavity opening of the rotating shaft to form the inlet of the rotating shaft cooling runner, the outlet of the permanent magnet rotor core cooling runner is connected with the right inner cavity opening of the rotating shaft to form the outlet of the rotating shaft cooling runner, and the inlet and the outlet of the rotating shaft cooling runner and a clamping and sealing device form a cooling runner inlet and outlet fixed interface; the planetary gear shell is internally provided with a spiral U, W and an S-shaped cooling flow channel, the peripheral surface of the shell is provided with a cooling flow channel inlet and outlet interface, and the casting process is 3D sand core printer casting.

7. The motor generator of claim 1, wherein the power controller comprises a battery pack voltage boosting and reducing module, a dual power supply conversion module, a driving motor M1 and a load motor M2 driving module, a generator rectifying and voltage stabilizing module, a multi-output DC-DC conversion module, a high-voltage insulation monitoring module, a detection and acquisition diagnosis module and a cooler device; the battery pack voltage boosting and reducing module is used for providing starting power for the driving motor M1 and is used for charging a battery pack by a bus; the dual power supply conversion module is used for switching a main power supply and a standby power supply; the driving modules of the driving motor M1 and the load motor M2 are used for driving and controlling the driving motor M1 and the load motor M2; the output of the generator rectifying and voltage stabilizing module is connected with the input ends of the DC-DC 1 and DC-DC 2 conversion modules, and a stabilized voltage power supply is provided for multi-output DC-DC conversion; the multi-output DC-DC conversion module is characterized in that the DC-DC 1 conversion module is used for providing a constant-voltage and constant-current power supply for a motor M1 bus, and the D C-DC 2 conversion module is used for providing a constant-voltage and constant-current power supply for a motor M2 bus; the high-voltage insulation monitoring module is used for monitoring leakage current faults in real time and disconnecting all power supplies in the circuit; the detection and diagnosis module is used for protecting and driving safe operation of the motor M1 and the generator by voltage, current, rotating speed, temperature and overvoltage and overcurrent; the cooler device is composed of a plurality of layers of oil cooling, air cooling, liquid cooling, cooling pipes and heat absorbing sheets and used for power control heat dissipation.

8. The motor generator of claims 1 and 7, wherein the generator generation process comprises the steps of: the battery pack voltage is boosted to the rated voltage of a driving motor M1, the dual-power conversion modules VT5 and VT6 are disconnected, the battery pack boosting module VT11 is turned on, VT7 is turned off, the electric lifter 2526125 is charged, the VT7 is turned on, VT11 is turned off, the electric lifter 2526134 is discharged, the battery pack voltage and the induced electromotive force of the electric lifter 2526185 are superposed, a capacitor C3 is charged to form a boosting main power supply, boosting is formed by PWM switching, the VT8, VT9, VT10, VT12, VT13 and VT14 are switched to supply power to a three-phase motor M1 through SPWM, and the motor M1 is started; the motor M1 drives a planetary gear to force the generator to rotate at an increased speed, the stator winding of the generator generates induction current, the induction current is connected with the input end of a multi-output DC-DC conversion module through a rectification voltage stabilization output, the DC-DC 1 converter is converted into rated voltage and current required by a bus motor M1 to conduct power supply VT5 and VT6 to the standby power bus, the VT7 and VT11 are switched off, and the dual-power conversion module is switched into the standby power supply to supply power to the bus driving motor M1; the battery pack voltage reduction module VT7 turns on VT11 off, the backup power bus charges a resistor 2526129, VT11 turns on VT7 turns off VT7 freewheeling, and the resistor 25261 3 charges a capacitor C4T and the battery pack.

9. The motor generator of claims 1, 7 and 8, wherein the dual power conversion module comprises a main power circuit of a battery pack voltage boosting and voltage reducing module, a standby power circuit, a DC-DC voltage reducing and conversion module output end circuit and a driving motor driving module, wherein the dual power conversion module VT5 and VT6 are disconnected, the battery pack voltage boosting module VT11 is turned on, VT 2526186525 is charged, VT7 is turned on, VT11 is turned off, and the VT 252612 is discharged, the battery pack voltage is superposed with the L3 induced electromotive force of the electric 2526125, a capacitor C3 is charged to form a voltage boosting main power supply, the VT8, VT9, VT10, VT 45, VT13 and VT14 are switched to supply power to a three-phase motor through SPWM, and the motor is started; when the motor drive reaches a rated rotating speed, the generator is connected with the input end of the multi-output DC-DC conversion module in a rectifying and voltage-stabilizing mode, the DC-DC 1 converter converts the rated voltage and current required by the motor M1 to supply power to a bus, the dual-power conversion modules VT5 and VT6 are switched on, the battery pack voltage boosting modules VT7 and VT11 are switched off, the generator is formed to provide circulating voltage for the motor, and the battery pack is charged and discharged and is shut down.

10. The motor generator of claims 1, 2, 3, 4, 6, 7, 8 and 9, wherein the power source, motor generator and drive wheel motor assembly relate to new energy electric vehicle power; the bearing comprises a ceramic bearing, a permanent magnetic suspension bearing, an electromagnetic suspension bearing and an air suspension bearing; and an emergency power supply, a generator set and a vehicle power supply.