CN110635614B - Series voltage compensation type flywheel pulse generator system - Google Patents
Series voltage compensation type flywheel pulse generator system Download PDFInfo
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- CN110635614B CN110635614B CN201910893366.9A CN201910893366A CN110635614B CN 110635614 B CN110635614 B CN 110635614B CN 201910893366 A CN201910893366 A CN 201910893366A CN 110635614 B CN110635614 B CN 110635614B
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- H—ELECTRICITY
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- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
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Abstract
A series voltage compensation type flywheel pulse generator system belongs to the field of motors. The invention aims to solve the problems of high system reliability and high cost caused by the fact that an excitation winding is required on a rotor of the existing pulse generator. The input end of an input inverter of the device is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor, a rotor of the input motor and a rotor of an output generator rotate coaxially, a stator winding outgoing line of the output generator is connected with the input end of an alternating current chopper, the output end of the alternating current chopper is connected with a primary winding of a series transformer, one end of a secondary winding of the series transformer is connected with a stator winding outgoing line of the output generator, the other end of the secondary winding of the series transformer is connected with an alternating current input end of an output rectifier, the alternating current output end of the output rectifier is connected with a load, and a voltage controller controls the on-off of a switch in the alternating current chopper. The generator rotor of the invention has no winding, and the system has simple structure and high reliability.
Description
Technical Field
The invention relates to a series voltage compensation type flywheel pulse generator system, and belongs to the field of motors.
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 structural schematic diagram of a common flywheel pulse generator system is shown in fig. 1. 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 engine 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.
However, the flywheel pulse generator set has the following disadvantages:
1. the whole unit has long shafting, low rotating speed, low power density, low energy density and large volume weight;
2. 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.
Disclosure of Invention
The invention aims to solve the problems of high system reliability and high cost caused by the fact that an excitation winding is required on a rotor of an existing pulse generator, and provides a series voltage compensation type flywheel pulse generator system.
The invention relates to a series voltage compensation type flywheel pulse generator system which comprises an input motor, an output generator, an input inverter, an output rectifier and a voltage regulating unit, wherein the input motor is connected with the output generator through a power line;
the voltage regulating unit comprises an alternating current chopper, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of the input motor, the rotor of the input motor and the rotor of the output generator rotate coaxially, the stator winding outgoing line of the output generator is connected with the input end of the alternating-current chopper, the output end of the alternating-current chopper is connected with a primary winding of the series transformer, one end of a secondary winding of the series transformer is connected with the stator winding outgoing line of the output generator, the other end of the secondary winding of the series transformer is connected with an alternating-current input end of the output rectifier, the alternating-current output end of the output rectifier is connected with a load, and the voltage controller controls the on-off of a switch in the alternating-current chopper.
The invention also provides a second series voltage compensation type flywheel pulse generator system, which comprises an input motor, an output generator, an input inverter, an output rectifier and a voltage regulation unit;
the stator of the output generator is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit comprises an alternating current chopper, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with an outgoing line of a stator winding of the input motor, a rotor of the input motor and a rotor of the output generator rotate coaxially, an outgoing line of a second armature winding of the output generator is connected with the input end of the alternating-current chopper, the output end of the alternating-current chopper is connected with a primary winding of the series transformer, one end of a secondary winding of the series transformer is connected with an outgoing line of a first armature winding of the output generator, the other end of the secondary winding of the series transformer is connected with an alternating-current input end of the output rectifier, an alternating-current output end of the output rectifier is connected with a load, and the voltage controller controls the on-off of a switch in the alternating-current chopper.
The invention also provides a third series voltage compensation type flywheel pulse generator system, which comprises an input motor, an output generator, an input inverter, an output rectifier and a voltage regulating unit;
the stator of the output generator is provided with two sets of armature windings, the phases of the corresponding phases of the two sets of armature windings are the same, and the first armature winding is in star connection;
the voltage regulating unit comprises an alternating current chopper, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with an outgoing line of a stator winding of the input motor, a rotor of the input motor and a rotor of the output generator rotate coaxially, an outgoing line of a first armature winding of the output generator is connected with the input end of the alternating-current chopper, the output end of the alternating-current chopper is connected with a primary winding of the series transformer, one end of a secondary winding of the series transformer is connected with one end of a second armature winding of the output generator, the other end of the second armature winding of the output generator is connected with a first armature winding of the output generator, the other end of the secondary winding of the series transformer is connected with an alternating-current input end of the output rectifier, an alternating-current output end of the output rectifier is connected with a load, and the voltage controller controls the on-off of a switch in the alternating-current chopper.
The invention also provides a fourth series voltage compensation type flywheel pulse generator system, which comprises a motor/generator, an input inverter, an output rectifier and a voltage regulating unit;
the stator of the motor/generator is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit comprises an alternating current chopper, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with an outgoing line of a first armature winding of the motor/generator, an outgoing line of a second armature winding of the motor/generator is connected with the input end of the alternating-current chopper, the output end of the alternating-current chopper is connected with a primary winding of a series transformer, one end of a secondary winding of the series transformer is connected with an outgoing line of a second armature winding of the motor/generator, the other end of the secondary winding of the series transformer is connected with an alternating-current input end of an output rectifier, an alternating-current output end of the output rectifier is connected with a load, and a voltage controller controls the on-off of a switch in the alternating-current chopper.
The invention also provides a fifth series voltage compensation type flywheel pulse generator system, which comprises a motor/generator, an input inverter, an output rectifier and a voltage regulating unit;
the stator of the motor/generator is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit comprises an alternating current chopper, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with an outgoing line of a first armature winding of the motor/generator, the outgoing line of the first armature winding of the motor/generator is connected with the input end of the alternating-current chopper, the output end of the alternating-current chopper is connected with a primary winding of a series transformer, one end of a secondary winding of the series transformer is connected with an outgoing line of a second armature winding of the motor/generator, the other end of the secondary winding of the series transformer is connected with an alternating-current input end of an output rectifier, the alternating-current output end of the output rectifier is connected with a load, and a voltage controller controls the on-off of a switch in the alternating-current chopper.
The invention also provides a sixth series voltage compensation type flywheel pulse generator system, which comprises a motor/generator, an input inverter, an output rectifier and a voltage regulating unit;
the stator of the motor/generator is provided with three sets of armature windings, wherein the phases of the corresponding phases of the second armature winding and the third armature winding are the same;
the voltage regulating unit comprises an alternating current chopper, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with an outgoing line of a first armature winding of the motor/generator, an outgoing line of a third armature winding of the motor/generator is connected with the input end of the alternating-current chopper, the output end of the alternating-current chopper is connected with a primary winding of a series transformer, one end of a secondary winding of the series transformer is connected with an outgoing line of a second armature winding of the motor/generator, the other end of the secondary winding of the series transformer is connected with an alternating-current input end of an output rectifier, an alternating-current output end of the output rectifier is connected with a load, and a voltage controller controls the on-off of a switch in the alternating-current chopper.
The invention also provides a seventh series voltage compensation type flywheel pulse generator system, which comprises an input motor, an output generator, an input inverter, an output rectifier and a voltage switching unit;
the voltage switching unit comprises N groups of alternating current switches, a series transformer and a voltage controller;
the input end of the input inverter is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of the input motor, a rotor of the input motor and a rotor of the output generator rotate coaxially, N groups of taps are arranged on a stator winding of the output generator, each group of taps is connected with one end of a group of alternating current switches, the other end of each alternating current switch is connected with a primary winding of a series transformer, one end of a secondary winding of the series transformer is connected with a stator winding outgoing line of the output generator, the other end of the secondary winding of the series transformer is connected with an alternating current input end of an output rectifier, an alternating current output end of the output rectifier is connected with a load, and a voltage controller controls the connection and disconnection of the N groups of alternating current switches.
According to the first, second, third or seventh series voltage compensation type flywheel pulse generator system, the pulse generator system further comprises an inertia flywheel, and the inertia flywheel is sleeved on the outer circle of the output generator rotor or is coaxially connected with the output generator rotor.
According to the second or third series voltage compensation type flywheel pulse generator system, two sets of armature windings on the stator of the output generator are arranged in one stator iron core or are respectively arranged in two sections of different stator iron cores in the axial direction.
According to the fourth or fifth series voltage compensation type flywheel pulse generator system, two sets of armature windings on the stator of the motor/generator are arranged in one stator iron core or are respectively arranged in two sections of different stator iron cores in the axial direction.
The invention has the advantages that:
1. the flywheel and the rotor can be combined into a whole, the unit shafting is short, the power density and the energy density are high, the system volume is small, the weight is light, and the cost is low; the integration of electric drive/power generation can be realized;
2. the generator does not need to be subjected to excitation control, and a generator rotor does not have a winding, so that the system is simple in structure, high in reliability and long in service life;
3. in addition, the following advantages are provided:
the output voltage during discharging is not limited by the input voltage during charging, can be designed at will, and is suitable for the application of high-power, high-voltage and pulse output occasions;
the system output voltage can be adjusted, and the method is suitable for occasions requiring multiple voltage levels;
the charging and discharging of the pulse generator system can be carried out simultaneously, and the power density and the energy density of the system are improved.
The series voltage compensation type flywheel pulse generator system provided by the invention realizes energy storage of an energy storage system and separation and isolation of input and output by adopting motor kinetic energy input and generator electric energy output; meanwhile, the output voltage regulation of the energy storage system is realized by utilizing the series voltage compensation unit, and the flexibility and the reliability of application are improved.
The series voltage compensation type flywheel pulse generator system provided by the invention has the characteristics of high output power density, high energy density, adjustable output voltage and the like, can be used as a high-capacity pulse power supply, and has good application prospects in the fields of nuclear fusion tests, plasmas, electromagnetic emission and the like.
Drawings
FIG. 1 is a schematic diagram of a prior art flywheel pulse generator system;
FIG. 2 is a schematic view of the mechanical connection of the motor when the flywheel pulse generator is used in the present invention;
FIG. 3 is a schematic diagram of a series voltage compensated flywheel pulse generator system according to an embodiment;
FIG. 4 is a schematic diagram of a voltage regulation unit according to a first embodiment;
FIG. 5 is a schematic structural diagram of a flywheel pulse generator system with series voltage compensation according to a second embodiment;
FIG. 6 is a schematic structural diagram of a voltage regulating unit according to a second embodiment;
FIG. 7 is a schematic structural diagram of a flywheel pulse generator system with series voltage compensation according to the third embodiment;
FIG. 8 is a schematic structural diagram of a voltage regulating unit according to a third embodiment;
FIG. 9 is a schematic structural diagram of a flywheel pulse generator system with series voltage compensation according to the fourth embodiment;
FIG. 10 is a schematic structural diagram of a voltage regulating unit according to a fourth embodiment;
FIG. 11 is a schematic structural diagram of a series voltage compensation flywheel pulse generator system according to a fifth embodiment;
FIG. 12 is a schematic structural diagram of a voltage regulating unit according to a fifth embodiment;
FIG. 13 is a schematic structural diagram of a series voltage compensated flywheel pulse generator system according to a sixth embodiment;
FIG. 14 is a schematic structural diagram of a voltage regulation unit according to a sixth embodiment;
FIG. 15 is a schematic structural diagram of a flywheel pulse generator system with series voltage compensation according to the seventh embodiment;
fig. 16 is a schematic structural diagram of a voltage switching unit in the seventh embodiment.
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.
The first embodiment is as follows: the present embodiment is described below with reference to fig. 2, 3 and 4, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes an input motor 10-1, an output generator 10-2, an input inverter 11, an output rectifier 12 and a voltage regulating unit 13;
the voltage regulating unit 13 comprises an alternating current chopper 13-1, a series transformer 13-2 and a voltage controller 13-3;
the input end of an input inverter 11 is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor 10-1, a rotor of the input motor 10-1 and a rotor of an output generator 10-2 rotate coaxially, a stator winding outgoing line of the output generator 10-2 is connected with the input end of an alternating current chopper 13-1, the output end of the alternating current chopper 13-1 is connected with a primary winding of a series transformer 13-2, one end of a secondary winding of the series transformer 13-2 is connected with a stator winding outgoing line of the output generator 10-2, the other end of the secondary winding of the series transformer 13-2 is connected with an alternating current input end of an output rectifier 12, an alternating current output end of the output rectifier 12 is connected with a load, and a voltage controller 13-3 controls the on-off of a switch in the alternating current chopper 13-1.
Furthermore, the series voltage compensation type flywheel pulse generator system also comprises an inertia flywheel which is sleeved on the excircle of the output generator rotor or is coaxially connected with the output generator rotor.
Further, the output generator is a multiphase permanent magnet synchronous motor with a magnetic field structure or an axial magnetic field structure.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 2, 5 and 6, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes an input motor 20-1, an output generator 20-2, an input inverter 21, an output rectifier 22 and a voltage regulating unit 23;
the stator of the output generator 20-2 is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit 23 comprises an alternating current chopper 23-1, a series transformer 23-2 and a voltage controller 23-3;
the input end of the input inverter 21 is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor 20-1, a rotor of the input motor 20-1 and a rotor of an output generator 20-2 rotate coaxially, an outgoing line of a second armature winding of the output generator 20-2 is connected with the input end of an alternating current chopper 23-1, the output end of the alternating current chopper 23-1 is connected with a primary winding of a series transformer 23-2, one end of a secondary winding of the series transformer 23-2 is connected with an outgoing line of a first armature winding of the output generator 20-2, the other end of the secondary winding of the series transformer 23-2 is connected with an alternating current input end of an output rectifier 22, an alternating current output end of the output rectifier 22 is connected with a load, and a voltage controller 23-3 controls on and off of a switch in the alternating current chopper 23-1.
Furthermore, two sets of armature windings on the stator of the output generator are arranged in one stator iron core or are respectively arranged in two sections of different stator iron cores in the axial direction.
Further, the output generator is a multiphase permanent magnet synchronous motor with a magnetic field structure or an axial magnetic field structure.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 2, 7 and 8, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes an input motor 30-1, an output generator 30-2, an input inverter 31, an output rectifier 32 and a voltage regulating unit 33;
the stator of the output generator 30-2 is provided with two sets of armature windings, the phases of the corresponding phases of the two sets of armature windings are the same, and the first armature winding is in star connection;
the voltage regulating unit 33 comprises an alternating current chopper 33-1, a series transformer 33-2 and a voltage controller 33-3;
the input end of an input inverter 31 is connected with a power supply, the output end is connected with a stator winding outgoing line of an input motor 30-1, a rotor of the input motor 30-1 and a rotor of an output generator 30-2 rotate coaxially, an outgoing line of a first armature winding of the output generator 30-2 is connected with the input end of an alternating current chopper 33-1, the output end of the alternating current chopper 33-1 is connected with a primary winding of a series transformer 33-2, one end of a secondary winding of the series transformer 33-2 is connected with one end of a second armature winding of the output generator 30-2, the other end of the second armature winding of the output generator 30-2 is connected with the first armature winding of the output generator 30-2, the other end of the secondary winding of the series transformer 33-2 is connected with an alternating current input end of an output rectifier 32, and an alternating current output end of the output rectifier 32 is connected with a load, the voltage controller 33-3 controls the on/off of the switch in the AC chopper 33-1.
Furthermore, the series voltage compensation type flywheel pulse generator system also comprises an inertia flywheel which is sleeved on the excircle of the output generator rotor or is coaxially connected with the output generator rotor.
Furthermore, two sets of armature windings on the stator of the output generator are arranged in one stator iron core or are respectively arranged in two sections of different stator iron cores in the axial direction.
Further, the output generator is a multiphase permanent magnet synchronous motor with a magnetic field structure or an axial magnetic field structure.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 2, 9 and 10, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes a motor/generator 40, an input inverter 41, an output rectifier 42 and a voltage regulating unit 43;
the stator of the motor/generator 40 is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit 43 includes an alternating current chopper 43-1, a series transformer 43-2, and a voltage controller 43-3;
the input end of the input inverter 41 is connected with a power supply, the output end is connected with a first armature winding outgoing line of the motor/generator 40, an outgoing line of a second armature winding of the motor/generator 40 is connected with the input end of the alternating current chopper 43-1, the output end of the alternating current chopper 43-1 is connected with a primary winding of the series transformer 43-2, one end of a secondary winding of the series transformer 43-2 is connected with an outgoing line of a second armature winding of the motor/generator 40, the other end of the secondary winding of the series transformer 43-2 is connected with an alternating current input end of the output rectifier 42, an alternating current output end of the output rectifier 42 is connected with a load, and the voltage controller 43-3 controls.
Further, the two sets of armature windings on the stator of the motor/generator 40 are disposed in one stator core, or in axially two different stator cores, respectively.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 2, 11 and 12, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes a motor/generator 50, an input inverter 51, an output rectifier 52 and a voltage regulating unit 53;
the stator of the motor/generator 50 is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage adjusting unit 53 includes an ac chopper 53-1, a series transformer 53-2, and a voltage controller 53-3;
the input end of the input inverter 51 is connected with a power supply, the output end of the input inverter is connected with a first armature winding lead wire of the motor/generator 50, a lead wire of a first armature winding of the motor/generator 50 is connected with the input end of an alternating current chopper 53-1, the output end of the alternating current chopper 53-1 is connected with a primary winding of a series transformer 53-2, one end of a secondary winding of the series transformer 53-2 is connected with a lead wire of a second armature winding of the motor/generator 50, the other end of the secondary winding of the series transformer 53-2 is connected with an alternating current input end of an output rectifier 52, an alternating current output end of the output rectifier 52 is connected with a load, and a voltage controller 53-3 controls the on-off of a switch in the alternating current chopper 53-1.
Further, the two sets of armature windings on the stator of the motor/generator 50 are disposed in one stator core, or in axially two different stator cores, respectively.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 2, 13 and 14, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes a motor/generator 60, an input inverter 61, an output rectifier 62 and a voltage regulating unit 63;
the stator of the motor/generator 60 has three sets of armature windings, wherein the phases of the corresponding phases of the second armature winding and the third armature winding are the same;
the voltage regulating unit 63 includes an ac chopper 63-1, a series transformer 63-2, and a voltage controller 63-3;
the input end of the input inverter 61 is connected with a power supply, the output end of the input inverter is connected with a first armature winding outgoing line of the motor/generator 60, an outgoing line of a third armature winding of the motor/generator 60 is connected with the input end of an alternating current chopper 63-1, the output end of the alternating current chopper 63-1 is connected with a primary winding of a series transformer 63-2, one end of a secondary winding of the series transformer 63-2 is connected with an outgoing line of a second armature winding of the motor/generator 60, the other end of the secondary winding of the series transformer 63-2 is connected with an alternating current input end of an output rectifier 62, an alternating current output end of the output rectifier 62 is connected with a load, and a voltage controller 63-3 controls the on-off of a switch in the alternating current chopper 63-1.
The seventh embodiment: the present embodiment will be described with reference to fig. 2, 15 and 16, and the series voltage compensation type flywheel pulse generator system according to the present embodiment includes an input motor 70-1 and an output generator 70-2, an input inverter 71, an output rectifier 72 and a voltage switching unit 73;
the voltage switching unit 73 comprises N groups of alternating current switches 73-1, a series transformer 73-2 and a voltage controller 73-3;
the input end of the input inverter 71 is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor 70-1, a rotor of the input motor 70-1 and a rotor of an output generator 70-2 rotate coaxially, N groups of taps are arranged on a stator winding of the output generator 70-2, each group of taps is connected with one end of a group of alternating current switches 73-1, the other end of the alternating current switches 73-1 is connected with a primary winding of a series transformer 73-2, one end of a secondary winding of the series transformer 73-2 is connected with a stator winding outgoing line of the output generator 70-2, the other end of the secondary winding of the series transformer 73-2 is connected with an alternating current input end of an output rectifier 72, an alternating current output end of the output rectifier 72 is connected with a load, and a voltage controller 73-3 controls the connection and disconnection of the N groups of alternating current switches 73-1.
Further, the output generator 70-2 further includes an inertia flywheel, which is sleeved on the outer circle of the output generator rotor or coaxially connected with the output generator rotor.
Further, the output generator is a multiphase permanent magnet synchronous motor with a magnetic field structure or an axial magnetic field structure.
According to the series voltage compensation type flywheel pulse generator system in the four embodiments of the invention, when the inertia of the rotor of the output generator is large enough, the inertia flywheel can be omitted. Therefore, the flywheel and the rotor are combined into a whole, the shaft system of the unit is short, and the power density and the energy density are high.
The energy required by the system in the discharge stage is as follows:
W1＝Pt，
wherein, W1The energy required by the system in the power generation stage is P, the system discharge power is P, and t is the system power generation time.
Energy W released by rotor in system power generation stage2Comprises the following steps:
wherein J is the rotational inertia of the motor rotor, omegamaxCorresponding angular velocity, omega, at the maximum rotation speed in the power generation stage of the systemminAnd the corresponding angular speed is the minimum rotating speed in the power generation stage of the system.
System rotor moment of inertia JrComprises the following steps:
in the formula mrTo the motor rotor mass, D2Is the outer diameter of the rotor.
The flywheel in the system is used for providing energy for the power generation stage of the system by utilizing the kinetic energy stored by the large-inertia rotating flywheel. Since the rotor itself has a moment of inertia, when W2>W1In the system, the rotational inertia of the motor rotor meets the requirement of the system in the power generation stage, and the flywheel and the rotor can be integrally designed, so that an additional flywheel does not need to be designed.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. A series voltage compensation type flywheel pulse generator system comprises an input motor (10-1), an output generator (10-2), an input inverter (11), an output rectifier (12) and a voltage regulating unit (13);
the voltage regulating unit (13) comprises an alternating current chopper (13-1), a series transformer (13-2) and a voltage controller (13-3);
the input end of an input inverter (11) is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor (10-1), a rotor of the input motor (10-1) and a rotor of an output generator (10-2) rotate coaxially, a stator winding outgoing line of the output generator (10-2) is connected with the input end of an alternating current chopper (13-1), the output end of the alternating current chopper (13-1) is connected with a primary winding of a series transformer (13-2), one end of a secondary winding of the series transformer (13-2) is connected with a stator winding outgoing line of the output generator (10-2), the other end of the secondary winding of the series transformer (13-2) is connected with an alternating current input end of an output rectifier (12), an alternating current output end of the output rectifier (12) is connected with a load, and a voltage controller (13-3) controls on and off of a switch in the alternating current chopper (13-1).
2. A series voltage compensation type flywheel pulse generator system comprises an input motor (20-1), an output generator (20-2), an input inverter (21), an output rectifier (22) and a voltage regulating unit (23);
the stator of the output generator (20-2) is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit (23) comprises an alternating current chopper (23-1), a series transformer (23-2) and a voltage controller (23-3);
the input end of an input inverter (21) is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor (20-1), a rotor of the input motor (20-1) and a rotor of an output generator (20-2) rotate coaxially, an outgoing line of a second armature winding of the output generator (20-2) is connected with the input end of an alternating current chopper (23-1), the output end of the alternating current chopper (23-1) is connected with a primary winding of a series transformer (23-2), one end of a secondary winding of the series transformer (23-2) is connected with an outgoing line of a first armature winding of the output generator (20-2), the other end of the secondary winding of the series transformer (23-2) is connected with an alternating current input end of an output rectifier (22), and an alternating current output end of the output rectifier (22) is connected with a load, the voltage controller (23-3) controls the on-off of the switch in the alternating current chopper (23-1).
3. A series voltage compensation type flywheel pulse generator system comprises an input motor (30-1), an output generator (30-2), an input inverter (31), an output rectifier (32) and a voltage regulating unit (33);
the stator of the output generator (30-2) is provided with two sets of armature windings, the phases of the corresponding phases of the two sets of armature windings are the same, and the first armature winding is in star connection;
the voltage regulating unit (33) comprises an alternating current chopper (33-1), a series transformer (33-2) and a voltage controller (33-3);
the input end of an input inverter (31) is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor (30-1), a rotor of the input motor (30-1) and a rotor of an output generator (30-2) rotate coaxially, an outgoing line of a first armature winding of the output generator (30-2) is connected with the input end of an alternating current chopper (33-1), the output end of the alternating current chopper (33-1) is connected with a primary winding of a series transformer (33-2), one end of a secondary winding of the series transformer (33-2) is connected with one end of a second armature winding of the output generator (30-2), the other end of the second armature winding of the output generator (30-2) is connected with the first armature winding of the output generator (30-2), and the other end of the secondary winding of the series transformer (33-2) is connected with an alternating current input end of an output rectifier (32), the alternating current output end of the output rectifier (32) is connected with a load, and the voltage controller (33-3) controls the on-off of a switch in the alternating current chopper (33-1).
4. A series voltage compensated flywheel pulse generator system comprising a motor/generator (40), an input inverter (41), an output rectifier (42) and a voltage regulation unit (43);
the stator of the motor/generator (40) is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit (43) comprises an alternating current chopper (43-1), a series transformer (43-2) and a voltage controller (43-3);
the input end of the input inverter (41) is connected with a power supply, the output end of the input inverter is connected with a first armature winding outgoing line of the motor/generator (40), an outgoing line of a second armature winding of the motor/generator (40) is connected with the input end of the alternating current chopper (43-1), the output end of the alternating current chopper (43-1) is connected with a primary winding of the series transformer (43-2), one end of a secondary winding of the series transformer (43-2) is connected with an outgoing line of the second armature winding of the motor/generator (40), the other end of the secondary winding of the series transformer (43-2) is connected with an alternating current input end of the output rectifier (42), an alternating current output end of the output rectifier (42) is connected with a load, and the voltage controller (43-3) controls the on-off of a switch in the alternating current chopper (43-1).
5. A series voltage compensated flywheel pulse generator system comprising a motor/generator (50), an input inverter (51), an output rectifier (52) and a voltage regulation unit (53);
the stator of the motor/generator (50) is provided with two sets of armature windings, and the phases of the corresponding phases of the two sets of armature windings are the same;
the voltage regulating unit (53) comprises an alternating current chopper (53-1), a series transformer (53-2) and a voltage controller (53-3);
the input end of the input inverter (51) is connected with a power supply, the output end of the input inverter is connected with a first armature winding lead wire of the motor/generator (50), a lead wire of a first armature winding of the motor/generator (50) is connected with the input end of an alternating current chopper (53-1), the output end of the alternating current chopper (53-1) is connected with a primary winding of a series transformer (53-2), one end of a secondary winding of the series transformer (53-2) is connected with a lead wire of a second armature winding of the motor/generator (50), the other end of the secondary winding of the series transformer (53-2) is connected with an alternating current input end of an output rectifier (52), an alternating current output end of the output rectifier (52) is connected with a load, and a voltage controller (53-3) controls the on-off of a switch in the alternating current chopper (53-1).
6. A series voltage compensated flywheel pulse generator system comprising a motor/generator (60), an input inverter (61), an output rectifier (62) and a voltage regulation unit (63);
the stator of the motor/generator (60) is provided with three sets of armature windings, wherein the phases of the corresponding phases of the second armature winding and the third armature winding are the same;
the voltage regulating unit (63) comprises an alternating current chopper (63-1), a series transformer (63-2) and a voltage controller (63-3);
the input end of the input inverter (61) is connected with a power supply, the output end of the input inverter is connected with a first armature winding outgoing line of the motor/generator (60), an outgoing line of a third armature winding of the motor/generator (60) is connected with the input end of the alternating current chopper (63-1), the output end of the alternating current chopper (63-1) is connected with a primary winding of the series transformer (63-2), one end of a secondary winding of the series transformer (63-2) is connected with an outgoing line of a second armature winding of the motor/generator (60), the other end of the secondary winding of the series transformer (63-2) is connected with an alternating current input end of the output rectifier (62), an alternating current output end of the output rectifier (62) is connected with a load, and the voltage controller (63-3) controls the on-off of a switch in the alternating current chopper (63-1).
7. A series voltage compensation type flywheel pulse generator system comprises an input motor (70-1), an output generator (70-2), an input inverter (71), an output rectifier (72) and a voltage switching unit (73);
the voltage switching unit (73) comprises N groups of alternating current switches (73-1), a series transformer (73-2) and a voltage controller (73-3);
the input end of an input inverter (71) is connected with a power supply, the output end of the input inverter is connected with a stator winding outgoing line of an input motor (70-1), a rotor of the input motor (70-1) and a rotor of an output generator (70-2) coaxially rotate, N groups of taps are arranged on a stator winding of the output generator (70-2), each group of taps is connected with one end of a group of alternating current switches (73-1), the other end of each alternating current switch (73-1) is connected with a primary winding of a series transformer (73-2), one end of a secondary winding of the series transformer (73-2) is connected with a stator winding outgoing line of the output generator (70-2), the other end of the secondary winding of the series transformer (73-2) is connected with an alternating current input end of an output rectifier (72), and an alternating current output end of the output rectifier (72) is connected with a load, the voltage controller (73-3) controls the on-off of the N groups of alternating current switches (73-1).
8. The series voltage compensated flywheel pulse generator system of any one of claims 1, 2, 3, and 7 further comprising an inertia flywheel mounted on the outer circle of the output generator rotor or coaxially coupled to the output generator rotor.
9. A series voltage compensated flywheel pulse generator system as claimed in any one of claims 2 or 3 in which the two sets of armature windings on the output generator stator are located in one stator core or separately in two axially distinct stator cores.
10. A series voltage compensated flywheel pulse generator system as claimed in any one of claims 4 or 5 wherein the two sets of armature windings on the motor/generator stator are located in one stator core or in axially two different stator cores respectively.
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