阅读说明：本技术 定子励磁飞轮脉冲感应发电机系统 (stator excitation flywheel pulse induction generator system ) 是由 寇宝泉 张浩泉 韦克康 于 2019-09-20 设计创作，主要内容包括：一种定子励磁飞轮脉冲感应发电机系统,属于电机和电力电子技术领域。本发明针对现有脉冲发电机组中的脉冲发电机采用在转子上设置励磁绕组,并配置相应励磁组件的形式,造成系统可靠性低的问题。它的输入逆变器的输出端与输入电动/励磁机的定子绕组引出线连接,输入电动/励磁机的转子绕组引出线与感应发电机的转子绕组引出线连接,感应发电机的定子绕组引出线与输出整流器的交流输入端连接,感应发电机的定子绕组输出端连接励磁电流调节单元；输入电动/励磁机的转子与感应发电机的转子同轴连接；输入电动/励磁机的转子绕组与感应发电机的转子绕组均为多相绕组,并且相数相同。本发明可用作大容量脉冲电源。(a stator excitation flywheel pulse induction generator system belongs to the technical field of motors and power electronics. The invention aims at the problem of low system reliability caused by the fact that a pulse generator in the existing pulse generator set adopts a mode that an excitation winding is arranged on a rotor and a corresponding excitation assembly is configured. The output end of an input inverter of the induction generator is connected with a stator winding outgoing line of an input electric/exciter, a rotor winding outgoing line of the input electric/exciter is connected with a rotor winding outgoing line of the induction generator, a stator winding outgoing line of the induction generator is connected with an alternating current input end of an output rectifier, and the stator winding output end of the induction generator is connected with an exciting current adjusting unit; the rotor of the input motor/exciter is coaxially connected with the rotor of the induction generator; the rotor windings of the input motor/exciter and the rotor windings of the induction generator are both multi-phase windings and have the same number of phases. The invention can be used as a large-capacity pulse power supply.)

1. A stator excitation flywheel pulse induction generator system is characterized by comprising an input inverter (10), an input electric/exciter (11), an induction generator (12), an output rectifier (13) and an excitation current adjusting unit (14),

The output end of the input inverter (10) is connected with a stator winding outgoing line of an input electric/exciter (11), a rotor winding outgoing line of the input electric/exciter (11) is connected with a rotor winding outgoing line of an induction generator (12), the stator winding outgoing line of the induction generator (12) is connected with an alternating current input end of an output rectifier (13), and the stator winding output end of the induction generator (12) is connected with an excitation current adjusting unit (14);

the rotor of the input electric/exciter (11) is coaxially connected with the rotor of the induction generator (12); the rotor winding of the input electric/exciter (11) and the rotor winding of the induction generator (12) are all multi-phase windings, and the number of phases is the same.

2. A stator excitation flywheel pulse induction generator system is characterized by comprising an input inverter (20), an input motor (21), an excitation inverter (22), an exciter (23), an induction generator (24), an output rectifier (25) and an excitation current adjusting unit (26),

The output end of the input inverter (20) is connected with a stator winding outgoing line of the input motor (21); the output end of the excitation inverter (22) is connected with the stator winding outgoing line of the exciter (23), the rotor winding outgoing line of the exciter (23) is connected with the rotor winding outgoing line of the induction generator (24), the stator winding outgoing line of the induction generator (24) is connected with the alternating current input end of the output rectifier (25), and the stator winding output end of the induction generator (24) is connected with the excitation current adjusting unit (26);

the rotor of the input motor (21), the rotor of the exciter (23) and the rotor of the induction generator (24) are coaxially connected; the rotor winding of the exciter (23) and the rotor winding of the induction generator (24) are both multi-phase windings, and the number of phases is the same.

3. a stator excitation flywheel pulse induction generator system is characterized by comprising an input inverter (30), an input motor (31), an excitation inverter (32), an induction generator (33), an output rectifier (34) and an excitation current regulating unit (35),

A plurality of sets of windings are configured on the stator of the induction generator (33), wherein one set of windings is a stator excitation winding, and the other sets of windings are stator power windings;

the output end of the input inverter (30) is connected with a stator winding outgoing line of the input motor (31); the output end of the excitation inverter (32) is connected with the stator excitation winding outgoing line of the induction generator (33), and the stator power winding outgoing line of the induction generator (33) is connected with the alternating current input end of the output rectifier (34); the output end of a stator power winding of the induction generator (33) is connected with an exciting current adjusting unit (35);

The rotor of the input motor (31) is coaxially connected with the rotor of the induction generator (33); the rotor winding of the induction generator (33) is a cage winding, or the rotor of the induction generator (33) is a solid rotor.

4. a stator excitation flywheel pulse induction generator system is characterized by comprising an input inverter (40), an induction motor/generator (41), an output rectifier (42) and an excitation current regulating unit (43),

the stator of the induction motor/generator (41) is provided with a plurality of sets of windings, wherein one set of windings is a stator excitation winding, and the other sets of windings are stator power windings;

The output end of the input inverter (40) is connected with the stator exciting winding lead wire of the induction motor/generator (41), and the stator power winding lead wire of the induction motor/generator (41) is connected with the alternating current input end of the output rectifier (42); the output end of the stator power winding of the induction motor/generator (41) is connected with an exciting current adjusting unit (43);

the rotor winding of the induction motor/generator (41) is a cage winding or the rotor of the induction motor/generator (41) is a solid rotor.

5. a stator excited flywheel pulse induction generator system as claimed in any one of claims 1 to 4, further comprising an inertial flywheel connected coaxially with the rotor of the respective induction generator or with the rotor of the induction motor/generator (41).

6. The stator excited flywheel pulse induction generator system of claim 1,

the input electric/exciter (11) and the induction generator (12) share one cage-shaped rotor, and the stator of the input electric/exciter (11) and the stator of the induction generator (12) are sequentially and coaxially arranged on the periphery of the cage-shaped rotor along the axial direction; an air gap is formed between the stator and the cage type rotor; a first cage winding is arranged on a section of the cage rotor corresponding to the input electric/exciter (11) stator, and a second cage winding is arranged on a section of the cage rotor corresponding to the induction generator (12) stator.

7. the stator excited flywheel pulse induction generator system of claim 2,

the exciter (23) and the induction generator (24) share one cage-shaped rotor, and the stator of the exciter (23) and the stator of the induction generator (24) are sequentially and coaxially mounted and fixed on the periphery of the cage-shaped rotor along the axial direction; an air gap is formed between the stator and the cage type rotor; a first cage winding is arranged on a section of the cage rotor corresponding to the stator of the exciter (23), and a second cage winding is arranged on a section of the cage rotor corresponding to the stator of the induction generator (24).

8. The stator excited flywheel pulse induction generator system of claim 3 or 4,

The rotor of the induction generator (33) or the induction motor/generator (41) is a solid rotor, the outer surface of the solid rotor is provided with narrow grooves along the axial direction, and two axial ends of the solid rotor are provided with short-circuit copper end rings.

9. a stator excited flywheel pulse induction generator system as claimed in any one of claims 1 to 4, wherein the generator system is further adapted to alternatively adopt the following configuration:

One) the input electric/exciter (11) and the induction generator (12) share one cylindrical solid iron core rotor, the stator of the input electric/exciter (11) and the stator of the induction generator (12) are sequentially and coaxially arranged on the periphery of the solid iron core rotor along the axial direction, and an air gap is formed between the stator and the solid iron core rotor;

Secondly), the input motor (21), the exciter (23) and the induction generator (24) share one cylindrical solid iron core rotor, the stator of the input motor (21), the stator of the exciter (23) and the stator of the induction generator (24) are sequentially and coaxially arranged on the periphery of the solid iron core rotor along the axial direction, and an air gap is formed between the stator and the solid iron core rotor;

Thirdly), the input motor (31) and the induction generator (33) share one cylindrical solid iron core rotor, the stator of the input motor (31) and the stator of the induction generator (33) are sequentially and coaxially arranged on the periphery of the solid iron core rotor along the axial direction, and an air gap is formed between the stator and the solid iron core rotor;

and IV) the induction motor/generator (41) adopts a cylindrical solid iron core rotor, the stator is arranged on the periphery of the cylindrical solid iron core rotor, and an air gap is formed between the stator and the solid iron core rotor.

10. A stator excited flywheel pulse induction generator system as claimed in any one of claims 1 to 4, wherein the field current regulation unit is implemented in one of the following ways:

the excitation current adjusting unit comprises a controller, a multiphase capacitor bank and a multiphase controllable saturated reactor bank, one end of each phase of capacitor in the multiphase capacitor bank is connected together, the other end of each phase of capacitor is correspondingly connected with the output end of the corresponding stator winding of the corresponding generator, the multiphase capacitor bank is connected with the multiphase controllable saturated reactor bank in parallel, the direct current winding of the multiphase controllable saturated reactor bank is connected with the controller, and the alternating current winding of the multiphase controllable saturated reactor bank is connected in a star shape;

secondly), the excitation current regulating unit comprises a multiphase capacitor bank and a multiphase switch reactor bank; one end of each phase capacitor in the multi-phase capacitor bank is connected together, and the other end of each phase capacitor is correspondingly connected with the output end of the corresponding stator winding of the corresponding generator; the multiphase switch reactor group comprises a multiphase reactor group and a multiphase alternating current short-circuit switch, the multiphase reactor group is connected with the multiphase capacitor group in parallel, one end of each phase of reactor in the multiphase reactor group is connected together and is formed by connecting two reactors in series, one end of each phase of the multiphase alternating current short-circuit switch is connected together, and the other alternating current end of each phase of reactor is correspondingly connected between the two reactors of each phase of reactor;

Thirdly), the excitation current regulating unit comprises a multi-phase main capacitor bank, a multi-phase switch capacitor bank and a multi-phase switch reactor bank, wherein one end of each phase capacitor in the multi-phase main capacitor bank is connected together, and the other end of each phase capacitor is correspondingly connected with the output end of the corresponding stator winding of the corresponding generator; the multi-phase switch capacitor bank is connected with the multi-phase capacitor bank in parallel, each phase of the multi-phase switch capacitor bank consists of a capacitor and an alternating current short-circuit switch, and one ends of all the alternating current short-circuit switches are connected together; the multiphase switch reactor group comprises a multiphase reactor group and a multiphase alternating current short-circuit switch group, the multiphase reactor group is connected with the multiphase switch capacitor group in parallel, one end of each phase of reactor in the multiphase reactor group is connected together and is formed by connecting two reactors in series, one end of each phase of alternating current short-circuit switch in the multiphase alternating current short-circuit switch group is connected together, and the other alternating current end is correspondingly connected between the two reactors of each phase of reactor respectively.

Technical Field

The invention relates to a stator excitation flywheel pulse induction generator system, and belongs to the technical field of motors and power electronics.

Background

The flywheel pulse generator is a flywheel energy storage device which utilizes the large inertia storage energy of a shafting and realizes electromechanical energy conversion by a coaxial motor/generator. Flywheel energy storage devices currently in use or under development are of two types: the first is that the power grades of energy storage and energy release are equivalent, the motor and the power generation function can be alternately realized by one motor, and the magnetic suspension flywheel energy storage system with medium and small capacity is of the type, has the characteristics of compact structure, high efficiency and the like, and is generally used as a flywheel battery; the second is that the energy storage power is smaller than the energy release power by more than one order of magnitude, two motors respectively realize the functions of electric drive and power generation, and a large-capacity alternating current pulse generator set is of the type, stores energy for a long time with small power, releases energy for a short time with large power, is generally used as a large-capacity pulse power supply, and can be applied to the fields of controlled nuclear fusion tests, nuclear explosion simulation, high-current particle beam accelerators, high-power pulse lasers, high-power microwaves, plasmas, electromagnetic emission technologies and the like.

the structure of a typical flywheel pulse generator system is shown in fig. 15. The basic working principle of the system is as follows: when the system is charged, an external power grid supplies energy to the system, a power converter formed by power electronic devices controls and drives a motor to drive a flywheel to rotate at a high speed, the flywheel can run at a constant high speed, the required energy is stored in a kinetic energy mode, and conversion from electric energy to mechanical energy and energy storage are completed. When the pulse load needs to supply power, the flywheel rotating at a high speed is used as a prime mover to drive the motor to generate power and operate, and the voltage and the current suitable for the pulse load are output through the power electronic converter to finish the energy conversion process.

the traditional pulse generator set usually adopts a structural form of 'motor-flywheel-generator'. The driving motor usually adopts a three-phase induction motor, while the pulse generator usually adopts a multiphase non-salient pole synchronous generator, the motor and the generator rotate coaxially, and an inertia flywheel is arranged on a rotating shaft of the generator. The flywheel and the generator are connected by a rigid coupling, the motor and the flywheel are connected flexibly, and the unit is provided with a plurality of bearings for supporting the rotor. The flywheel pulse generator set has the following disadvantages: the whole unit has long shafting, low rotating speed, low power density, low energy density and large volume weight; the rotor of the pulse generator is provided with an excitation winding, and a multi-stage rotating rectifier is adopted for excitation, so that the system is low in reliability and high in cost, and is not suitable for being used in a mobile platform.

Therefore, in view of the above disadvantages, it is desirable to provide a new flywheel pulse engine system, which is suitable for high-speed operation, and has a simplified rotor structure and improved system reliability.

Disclosure of Invention

The invention provides a stator excitation flywheel pulse induction generator system, aiming at the problem of low system reliability caused by the fact that a pulse generator in the existing pulse generator set adopts a mode that an excitation winding is arranged on a rotor and a corresponding excitation assembly is configured.

the invention relates to a stator excitation flywheel pulse induction generator system, which comprises an input inverter, an input electric/exciter, an induction generator, an output rectifier and an excitation current adjusting unit,

The output end of the input inverter is connected with a stator winding outgoing line of the input electric/exciter, a rotor winding outgoing line of the input electric/exciter is connected with a rotor winding outgoing line of the induction generator, a stator winding outgoing line of the induction generator is connected with an alternating current input end of the output rectifier, and the stator winding output end of the induction generator is connected with an exciting current adjusting unit;

the rotor of the input motor/exciter is coaxially connected with the rotor of the induction generator; the rotor windings of the input motor/exciter and the rotor windings of the induction generator are both multi-phase windings and have the same number of phases.

The invention also provides a stator excitation flywheel pulse induction generator system, which comprises an input inverter, an input motor, an excitation inverter, an exciter, an induction generator, an output rectifier and an excitation current regulating unit,

the output end of the input inverter is connected with a stator winding outgoing line of the input motor; the output end of the excitation inverter is connected with a stator winding outgoing line of an exciter, a rotor winding outgoing line of the exciter is connected with a rotor winding outgoing line of an induction generator, the stator winding outgoing line of the induction generator is connected with an alternating current input end of an output rectifier, and the stator winding output end of the induction generator is connected with an excitation current regulating unit;

The rotor of the input motor, the rotor of the exciter and the rotor of the induction generator are coaxially connected; the rotor winding of the exciter and the rotor winding of the induction generator are both multi-phase windings, and the number of phases is the same.

The invention provides a third stator excitation flywheel pulse induction generator system, which comprises an input inverter, an input motor, an excitation inverter, an induction generator, an output rectifier and an excitation current regulating unit,

a plurality of sets of windings are configured on a stator of the induction generator, wherein one set of windings is a stator excitation winding, and the other sets of windings are stator power windings;

the output end of the input inverter is connected with a stator winding outgoing line of the input motor; the output end of the excitation inverter is connected with a stator excitation winding outgoing line of the induction generator, and a stator power winding outgoing line of the induction generator is connected with an alternating current input end of the output rectifier; the output end of a stator power winding of the induction generator is connected with an exciting current adjusting unit;

The rotor of the input motor is coaxially connected with the rotor of the induction generator; the rotor winding of the induction generator is a cage winding, or the rotor of the induction generator is a solid rotor.

The invention provides a fourth stator excitation flywheel pulse induction generator system, which comprises an input inverter, an induction motor/generator, an output rectifier and an excitation current regulating unit,

The stator of the induction motor/generator is provided with a plurality of sets of windings, wherein one set of windings is a stator excitation winding, and the other sets of windings are stator power windings;

the output end of the input inverter is connected with a stator exciting winding outgoing line of the induction motor/generator, and a stator power winding outgoing line of the induction motor/generator is connected with an alternating current input end of the output rectifier; the output end of the stator power winding of the induction motor/generator is connected with an exciting current adjusting unit;

The rotor winding of the induction motor/generator is a cage winding or the rotor of the induction motor/generator is a solid rotor.

the stator excited flywheel pulse induction generator system of any preceding claim further comprising an inertial flywheel connected coaxially with the rotor of a corresponding induction generator or with the rotor of an induction motor/generator.

According to a first stator excited flywheel pulse induction generator system of the present invention,

the input electric/exciter and the induction generator share one cage-shaped rotor, and the stator of the input electric/exciter and the stator of the induction generator are sequentially and coaxially arranged on the periphery of the cage-shaped rotor along the axial direction; an air gap is formed between the stator and the cage type rotor; a first cage winding is arranged on a section of the cage rotor corresponding to the input electric/exciter stator, and a second cage winding is arranged on a section of the cage rotor corresponding to the induction generator stator.

according to a second stator excited flywheel pulse induction generator system of the present invention,

The exciter and the induction generator share one cage-shaped rotor, and the exciter stator and the induction generator stator are sequentially and coaxially mounted and fixed on the periphery of the cage-shaped rotor along the axial direction; an air gap is formed between the stator and the cage type rotor; a first cage winding is arranged on a section of the cage rotor corresponding to the exciter stator, and a second cage winding is arranged on a section of the cage rotor corresponding to the induction generator stator.

According to the third or fourth stator excitation flywheel pulse induction generator system, the rotor of the induction generator or the induction motor/generator is a solid rotor, the outer surface of the solid rotor is provided with narrow grooves along the axial direction, and the two axial ends of the solid rotor are provided with short-circuit copper end rings.

According to the stator excitation flywheel pulse induction generator system, the generator system adopts the following structure in a suitable alternative mode:

One) the input electric/exciter and the induction generator share one cylindrical solid iron core rotor, the input electric/exciter stator and the induction generator stator are sequentially and coaxially arranged on the periphery of the solid iron core rotor along the axial direction, and an air gap is formed between the stator and the solid iron core rotor;

secondly), the input motor, the exciter and the induction generator share one cylindrical solid iron core rotor, the input motor stator, the exciter stator and the induction generator stator are sequentially and coaxially arranged on the periphery of the solid iron core rotor along the axial direction, and an air gap is formed between the stator and the solid iron core rotor;

thirdly), the input motor and the induction generator share one cylindrical solid iron core rotor, a stator of the input motor and a stator of the induction generator are sequentially and coaxially arranged on the periphery of the solid iron core rotor along the axial direction, and an air gap is formed between the stator and the solid iron core rotor;

Four) the induction motor/generator employs a cylindrical solid core rotor with a stator at the periphery of the cylindrical solid core rotor and an air gap between the stator and the solid core rotor.

According to the stator excitation flywheel pulse induction generator system, the excitation current adjusting unit is realized by adopting one of the following modes:

The excitation current adjusting unit comprises a controller, a multiphase capacitor bank and a multiphase controllable saturated reactor bank, one end of each phase of capacitor in the multiphase capacitor bank is connected together, the other end of each phase of capacitor is correspondingly connected with the output end of the corresponding stator winding of the corresponding generator, the multiphase capacitor bank is connected with the multiphase controllable saturated reactor bank in parallel, the direct current winding of the multiphase controllable saturated reactor bank is connected with the controller, and the alternating current winding of the multiphase controllable saturated reactor bank is connected in a star shape;

Secondly), the excitation current regulating unit comprises a multiphase capacitor bank and a multiphase switch reactor bank; one end of each phase capacitor in the multi-phase capacitor bank is connected together, and the other end of each phase capacitor is correspondingly connected with the output end of the corresponding stator winding of the corresponding generator; the multiphase switch reactor group comprises a multiphase reactor group and a multiphase alternating current short-circuit switch, the multiphase reactor group is connected with the multiphase capacitor group in parallel, one end of each phase of reactor in the multiphase reactor group is connected together and is formed by connecting two reactors in series, one end of each phase of the multiphase alternating current short-circuit switch is connected together, and the other alternating current end of each phase of reactor is correspondingly connected between the two reactors of each phase of reactor;

Thirdly), the excitation current regulating unit comprises a multi-phase main capacitor bank, a multi-phase switch capacitor bank and a multi-phase switch reactor bank, wherein one end of each phase capacitor in the multi-phase main capacitor bank is connected together, and the other end of each phase capacitor is correspondingly connected with the output end of the corresponding stator winding of the corresponding generator; the multi-phase switch capacitor bank is connected with the multi-phase capacitor bank in parallel, each phase of the multi-phase switch capacitor bank consists of a capacitor and an alternating current short-circuit switch, and one ends of all the alternating current short-circuit switches are connected together; the multiphase switch reactor group comprises a multiphase reactor group and a multiphase alternating current short-circuit switch group, the multiphase reactor group is connected with the multiphase switch capacitor group in parallel, one end of each phase of reactor in the multiphase reactor group is connected together and is formed by connecting two reactors in series, one end of each phase of alternating current short-circuit switch in the multiphase alternating current short-circuit switch group is connected together, and the other alternating current end is correspondingly connected between the two reactors of each phase of reactor respectively.

the invention has the beneficial effects that: the invention can combine the flywheel and the rotor into a whole, thereby ensuring that the shafting of the system unit is short, and the power density and the energy density are high; meanwhile, the excitation winding and the armature winding are both arranged on the stator, and the rotor is not provided with an electric brush and a slip ring, so that the system has the advantages of simple structure, high reliability, low cost and convenient maintenance; the motor has high strength, small volume and light weight, and is suitable for high-speed operation; the invention can realize the output voltage regulation of the system by controlling the magnitude of the reactive current output by the exciting inverter and the exciting current regulating unit, has easy control, small exciting power and wider voltage regulation capability or wide-range variable-speed constant-voltage output capability.

The system has the advantages of simple structure, low cost, high reliability and adjustable output voltage and frequency, can be used as a large-capacity pulse power supply, and has good application prospect in the fields of nuclear fusion test technology, plasma, electromagnetic emission technology and the like.

drawings

FIG. 1 is a block diagram of a stator excited flywheel pulse induction generator system according to an embodiment of the present invention;

FIG. 2 is a schematic view of a mechanical connection of the electrical machine corresponding to FIG. 1;

FIG. 3 is a block diagram of a stator-excited flywheel pulse induction generator system according to a second embodiment of the present invention;

FIG. 4 is a schematic view of the mechanical connection of the motor corresponding to FIG. 3;

FIG. 5 is a block diagram of a stator-excited flywheel pulse induction generator system according to a third embodiment of the present invention;

FIG. 6 is a schematic view of a mechanical connection of the motor corresponding to FIG. 5;

FIG. 7 is a block diagram of a stator excited flywheel pulse induction generator system according to an embodiment of the present invention;

FIG. 8 is a schematic view of the mechanical connection of the motor corresponding to FIG. 7;

FIG. 9 is a first embodiment of a first motor system according to a first configuration of the present invention;

FIG. 10 is a second embodiment of the motor system of the first construction of the present invention;

FIG. 11 is a particular embodiment of a third or fourth configuration of the motor system of the present invention;

FIG. 12 shows a first embodiment of an excitation current adjustment unit;

fig. 13 is a second embodiment of the excitation current adjusting unit;

Fig. 14 is a third embodiment of the excitation current adjustment unit;

Fig. 15 is a schematic structural diagram of a conventional flywheel pulse generator system.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

it should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.