CN104242521B - A kind of bimodulus motor generator - Google Patents
A kind of bimodulus motor generator Download PDFInfo
- Publication number
- CN104242521B CN104242521B CN201410538070.2A CN201410538070A CN104242521B CN 104242521 B CN104242521 B CN 104242521B CN 201410538070 A CN201410538070 A CN 201410538070A CN 104242521 B CN104242521 B CN 104242521B
- Authority
- CN
- China
- Prior art keywords
- coil
- phase winding
- remainder
- motor generator
- switched reluctance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005284 excitation Effects 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 claims description 68
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 230000007935 neutral effect Effects 0.000 claims description 8
- 239000007858 starting material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Synchronous Machinery (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
本发明提出了一种双模电动发电机，包括转子铁心(7)、定子铁心(8)、线圈、轴和外壳等，具有开关磁阻电机一样简单可靠的本体结构。其中的线圈有的是电枢线圈，有的既可以作为电枢线圈又可以作为励磁线圈，这种新型线圈结构使电机既可以作为开关磁阻电机模式运行，又可以作为电励磁双凸极电机模式运行。控制器可以根据不同的工作环境自主选择工作模式，可以综合利用开关磁阻电机和电励磁双凸极发电机的优点。本发明的双模电动发电机非常适合作为汽车用起动发电机和汽车驱动电机，电动时工作在开关磁阻电机模式，发电时工作在电励磁双凸极电机模式。
The invention provides a dual-mode motor generator, which includes a rotor core (7), a stator core (8), a coil, a shaft, a casing, etc., and has a simple and reliable body structure like a switched reluctance motor. Some of the coils are armature coils, and some can be used as both armature coils and excitation coils. This new coil structure enables the motor to operate as a switched reluctance motor mode and as an electrically excited double salient pole motor mode. . The controller can independently select the working mode according to different working environments, and can comprehensively utilize the advantages of the switched reluctance motor and the electrically excited double salient generator. The dual-mode motor-generator of the present invention is very suitable as a starter generator for automobiles and a driving motor for automobiles. It works in the switched reluctance motor mode when it is powered, and works in the electrically excited double salient motor mode when it generates power.
Description
Technical field
The present invention relates to a kind of bimodulus motor generator, belong to Electric Machines and Electric Apparatus technical field.
Background technology
Motor generator can be used as motor running, can run as generator again. The motors such as vapour vehicle-mounted starting engine and drive-motor all should have this two kinds of functions, to power as electrical equipment after activation, or reclaims braking energy after driving automobile.
Existing part adopts the application of the motor generator of permanent-magnet synchronous motor both at home and abroad at present, but, permanent-magnet machine does not possess quick de-excitation ability, in switch load or when running into big fault, system can produce very big mains ripple, it is possible to causes the damage of other parts. Therefore permanent magnet generator needs external extra fault protection circuit, which increases system cost.
Switched reluctance machines low speed torque is big, is suitable as the motor running such as starting engine. But it needs when running as generator to utilize armature winding energising excitation, is therefore that pulse exports during its generating state, it is necessary to the current rectifying and wave filtering circuit that cost is higher.
Electric excitation biconvex electrode electric machine has independent field copper, it is possible to very easily by regulating the size of magnetizing current to keep the stable of output voltage. But when electric operation, its energy conversion efficiency and power density are less than switched reluctance machines.
Therefore, it is proposed to a kind of can will have extremely important value with the bimodulus motor generator of double-salient-pole generator mode operation again with switched reluctance machines mode operation.
In current existing technology, this concept of bimodulus is applied to oil-electric vehicle and Communication Engineering field mostly. Such as application number is the patent of invention of 201310410243.8: planetary type dual-mode petrol-electric parallel-serial hybrid power system, gives and a kind of can use oil engine or the hybrid vehicle of electric motor two kinds of mode activated. Bimodulus concept is also used in the control techniques of some motors, the patent of invention such as authorized: Dual-mode control method for initial frequency conversion starting stage of synchronous motor, the patent No.: 201110314494.7, give a kind of Dual-mode control method adopting the employing closed-loop control of open loop control mode, normal operating phase in the starting stage, it is applied to synchronous machine. The utility model patent authorized: brshless DC motor bimodulus runs change over controller, and grant number ZL201320241906.3, by adopting two kinds of control modes, it is achieved that motor standard state and position transducer break down two kinds of master modes under state. Current application person does not retrieve the patent being realized the New-type electric machine that two kinds of dissimilar motor mode are run by switching winding and control mode.
Technology disclosed by the invention, it is proposed that the concept of the bimodulus motor run with switched reluctance machines operating mode can be run with double salient-pole electric machine operating mode, and for this emerging concept, the configuration method giving novel winding is to realize dual-mode of operation. This kind of bimodulus motor is suitable as motor generator and uses very much.
Summary of the invention
The present invention proposes a kind of bimodulus motor generator, work according to switched reluctance machines principle as during switched reluctance machines mode operation; Work according to electric excitation biconvex electrode electric machine principle as during electric excitation biconvex electrode electric machine mode operation.
The present invention adopts following technical scheme:
A kind of bimodulus motor generator, comprise rotor core (7), stator core (8), coil, axle and shell etc., it is characterized in that rotor core (7) extremely counts as 4N, stator core (8) extremely counts as 6N, N are natural number; The centralized coil being wound with identical coiling direction in each stator poles, the coil called after xth coil successively circumferential order xth extremely gone up, x is natural number;
When described bimodulus motor generator is in switched reluctance machines operating mode, each coil mode of connection identical with traditional switched reluctance machines, namely x/6 remainder be 1 coil and x/6 remainder be the coils connected in series of 4 or compose in parallel A phase winding, x/6 remainder be 2 coil and x/6 remainder be the coils connected in series of 5 or compose in parallel B phase winding, x/6 remainder be 3 coil and x/6 remainder be the coils connected in series of 6 or compose in parallel C phase winding, each phase winding is connected on asymmetrical half-bridge with switched reluctance machines operating mode to run;
When described bimodulus motor generator is in double salient-pole electric machine operating mode, it is the coil of 2 by x/6 remainder, x/6 remainder be 4 coil and x/6 remainder be the coils connected in series of 6 or compose in parallel field copper, the coil being 1 by x/6 remainder forms A phase winding, the coil being 3 by x/6 remainder forms C phase winding, the coil being 5 by x/6 remainder forms B phase winding, A phase winding, one end of C phase winding and B phase winding connects the neutral point of three bridge arms of three-phase commutation bridge respectively, A phase winding, the other end of C phase winding and B phase winding is connected together as neutral point, run with double salient-pole electric machine operating mode,
Described bimodulus motor generator, when being operated in switched reluctance machines pattern, not only as motor running but also can run as generator; When being operated in electric excitation biconvex electrode electric machine pattern, also not only as motor running but also can run as generator.
Bimodulus motor generator as above a kind of, it is characterised in that: each coil is respectively by some sub-coils connected in series or compose in parallel, and when coil is used as field copper, each sub-coils connected in series, to obtain the higher field copper number of turn; When coil is used as armature winding, each sub-coils from parallel connection of coils, to reduce the internal resistance of armature winding.
A kind of bimodulus motor generator as above, it is characterised in that: described bimodulus motor generator, as automobile starting-generating machine, is operated in switched reluctance machines pattern during starting; It is operated in electric excitation biconvex electrode electric machine operating mode during generating, it is energized to field copper and air gap magnetic field can be controlled by controlling the size of magnetizing current, to keep the stable of output voltage.
A kind of bimodulus motor generator as above, it is characterised in that: described bimodulus motor generator, as automobile drive-motor, drives and is operated in switched reluctance machines pattern during automobile, be operated in electric excitation biconvex electrode electric machine operating mode when reclaiming braking energy.
The useful effect of the present invention is as follows:
(1) the present invention proposes a kind of bimodulus motor generator, both can as switched reluctance machines mode operation, again can as electric excitation biconvex electrode electric machine mode operation, according to different Working environments from main separation operating mode, can fully utilize the advantage of switched reluctance machines and electric excitation biconvex electrode electric machine;
(2) a kind of bimodulus motor generator of the present invention is suitable as automobile starting-generating machine very much, is operated in switched reluctance machines pattern during starting; It is operated in electric excitation biconvex electrode electric machine operating mode during generating, it is energized to field copper and air gap magnetic field can be controlled by controlling the size of magnetizing current, to keep the stable of output voltage;
(3) a kind of bimodulus motor generator of the present invention is also suitable as automobile drive-motor very much, drives and is operated in switched reluctance machines pattern during automobile, is operated in electric excitation biconvex electrode electric machine operating mode when reclaiming braking energy;
(4) a kind of bimodulus motor generator of the present invention also is applicable to can be used as fault-tolerant motor and uses, when an operating mode can not normal operation and the 2nd pattern can work time, just switch to the 2nd pattern work.
Accompanying drawing explanation
Fig. 1 is the sectional view of a kind of bimodulus motor generator embodiment of the present invention, and its rotor-stator is number 6 poles and 4 poles respectively extremely. Wherein: 1, the 1st coil; 2. the 2nd coil; 3, the 3rd coil; 4, the 4th coil; 5, the 5th coil; 6, the 6th coil; 7, rotor core; 8, stator core.
Fig. 2 is the first embodiment of the switching magnetic-resistance pattern coil connection of bimodulus motor generator of the present invention.
Fig. 3 is the 2nd kind of embodiment of the switching magnetic-resistance pattern coil connection of bimodulus motor generator of the present invention.
Fig. 4 is the third embodiment of the switching magnetic-resistance pattern coil connection of bimodulus motor generator of the present invention.
Fig. 5 is the first embodiment of the double-salient-pole pattern coil connection of bimodulus motor generator of the present invention.
Fig. 6 is the 2nd kind of embodiment of the double-salient-pole pattern coil connection of bimodulus motor generator of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention is described in further details.
A kind of bimodulus motor generator of the present invention shown in Fig. 1, comprise rotor core (7), stator core (8), coil, axle and shell etc., rotor core (7) extremely counts as 4N, and stator core (8) extremely counts as 6N, the present embodiment N=1. The centralized coil being wound with identical coiling direction in each stator poles, is respectively the first coil, two coil, tertiary winding, the 4th coil, the 5th coil and the 6th coil successively by circumferential order.
Fig. 2 is the first embodiment of the switching magnetic-resistance pattern coil connection of bimodulus motor generator of the present invention. First coil and the 4th coils connected in series composition A phase winding, two coil and the 5th coils connected in series composition B phase winding, tertiary winding and the 6th coils connected in series composition C phase winding, each phase winding is connected to asymmetrical half-bridge and namely can run with switched reluctance machines operating mode.
Fig. 3 is the 2nd kind of embodiment of the switching magnetic-resistance pattern coil connection of bimodulus motor generator of the present invention. First coil and the 4th coils from parallel connection of coils composition A phase winding, two coil and the 5th coils from parallel connection of coils composition B phase winding, tertiary winding and the 6th coils from parallel connection of coils composition C phase winding, each phase winding is connected to asymmetrical half-bridge and namely can run with switched reluctance machines operating mode.
Fig. 4 is the third embodiment of the switching magnetic-resistance pattern coil connection of bimodulus motor generator of the present invention. Each coil forms two sub-coils from centre tap, after two sub-coils from parallel connection of coils again with the coils from parallel connection of coils of same-phase or be composed in series a phase winding. The total number of turn of series connection that this kind of connection effectively reduces each phase coil.
Fig. 5 is the first embodiment of the double-salient-pole pattern coil connection of bimodulus motor generator of the present invention. Field copper is formed by two coil, the 4th coil and the 6th coils connected in series, A phase winding is formed by the first coil, B phase winding is formed by tertiary winding, C phase winding is formed by the 5th coil, one end of A phase winding, B phase winding and C phase winding connects the neutral point of three bridge arms of three-phase commutation bridge respectively, the other end of A phase winding, B phase winding and C phase winding is connected together as neutral point, and motor can run with double salient-pole electric machine operating mode.
Fig. 6 is the 2nd kind of embodiment of the double-salient-pole pattern coil connection of bimodulus motor generator of the present invention. Field copper is formed by two coil, the 4th coil and the 6th coils connected in series, first coil centre tap forms two sub-coils and again and is unified into A phase winding, tertiary winding centre tap forms two sub-coils and again and is unified into B phase winding, three or five coil centre tap forms two sub-coils and again and is unified into C phase winding, one end of A phase winding, B phase winding and C phase winding connects the neutral point of three bridge arms of three-phase commutation bridge respectively, the other end of A phase winding, C phase winding and B phase winding is connected together as neutral point, and motor can run with double salient-pole electric machine operating mode.
In the present embodiment, it is series connection as each coil of field copper, it is possible to obtain the higher field copper number of turn. Each the sub-coil as armature winding is in parallel, to reduce the internal resistance of armature winding.
The motor generator of the present invention, when being operated in switched reluctance machines pattern, not only as motor running but also can run as generator; When being operated in electric excitation biconvex electrode electric machine pattern, also not only as motor running but also can run as generator.
Principle of work when the bimodulus motor generator of the present invention is operated in switching magnetic-resistance pattern is the same with switched reluctance machines, and principle of work when being operated in electric excitation biconvex electrode pattern is the same with electric excitation biconvex electrode electric machine. The technology of the present invention can fully utilize the advantage of switched reluctance machines and Fielding-winding doubly salient generator.
The ultimate principle of the bimodulus starting-generating machine technology of the present invention all has double-salient-pole stator and rotor sructure based on double salient-pole electric machine and switched reluctance machines, and it is not but the difference of excitation mode; And double salient-pole electric machine and switched reluctance machines all not only can run as generator but also can as motor running.
The technology of the present invention has higher application prospect, is mainly manifested in the following aspects.
A kind of bimodulus motor generator of the present invention, can be used as automobile starting-generating machine, is operated in switched reluctance machines pattern during starting; It is operated in electric excitation biconvex electrode electric machine operating mode during generating, it is energized to field copper and air gap magnetic field can be controlled by controlling the size of magnetizing current, to keep the stable of output voltage.
A kind of bimodulus motor generator of the present invention, as automobile drive-motor, drives and is operated in switched reluctance machines pattern during automobile, be operated in electric excitation biconvex electrode electric machine operating mode when reclaiming braking energy.
A kind of bimodulus motor generator of the present invention, can be used as automobile fault-tolerant motor and uses, when an operating mode can not normal operation and the 2nd pattern can work time, just switch to the 2nd pattern work. But this kind of mode needs the controller configuring two kinds of motors.
It is to be noted; the above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any it is familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily and replacement, all should be encompassed in protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (4)
1. a bimodulus motor generator, comprise rotor core (7), stator core (8), coil, axle and shell, it is characterized in that rotor core (7) extremely counts as 4N, stator core (8) extremely counts as 6N, N are natural number; The centralized coil being wound with identical coiling direction in each stator poles, the coil called after xth coil successively circumferential order xth extremely gone up, x is natural number;
When described bimodulus motor generator is in switched reluctance machines operating mode, the mode of connection of each coil is: x/6 remainder be 1 coil and x/6 remainder be the coils connected in series of 4 or compose in parallel A phase winding, x/6 remainder be 2 coil and x/6 remainder be the coils connected in series of 5 or compose in parallel B phase winding, x/6 remainder be 3 coil and x/6 remainder be the coils connected in series of 6 or compose in parallel C phase winding, each phase winding is connected on asymmetrical half-bridge with switched reluctance machines operating mode to run;
When described bimodulus motor generator is in electric excitation biconvex electrode electric machine operating mode, it is the coil of 2 by x/6 remainder, x/6 remainder be 4 coil and x/6 remainder be the coils connected in series of 6 or compose in parallel field copper, the coil being 1 by x/6 remainder forms A phase winding, the coil being 3 by x/6 remainder forms C phase winding, the coil being 5 by x/6 remainder forms B phase winding, A phase winding, one end of C phase winding and B phase winding connects the neutral point of three bridge arms of three-phase commutation bridge respectively, A phase winding, the other end of C phase winding and B phase winding is connected together as neutral point, run with electric excitation biconvex electrode electric machine operating mode,
Described bimodulus motor generator, when being operated in switched reluctance machines pattern, not only as motor running but also can run as generator; When being operated in electric excitation biconvex electrode electric machine pattern, also not only as motor running but also can run as generator.
2. bimodulus motor generator as claimed in claim 1, it is characterised in that: each coil is respectively by some sub-coils connected in series or compose in parallel, and when coil is used as field copper, each sub-coils connected in series, to obtain the higher field copper number of turn; When coil is used as armature winding, each sub-coils from parallel connection of coils, to reduce the internal resistance of armature winding.
3. bimodulus motor generator as claimed in claim 1, it is characterised in that: described bimodulus motor generator, as automobile starting-generating machine, is operated in switched reluctance machines pattern during starting; It is operated in electric excitation biconvex electrode electric machine operating mode during generating, it is energized to field copper and air gap magnetic field can be controlled by controlling the size of magnetizing current, to keep the stable of output voltage.
4. bimodulus motor generator as claimed in claim 1, it is characterized in that: described bimodulus motor generator is as automobile drive-motor, drive and it is operated in switched reluctance machines pattern during automobile, when reclaiming braking energy, be operated in electric excitation biconvex electrode electric machine operating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538070.2A CN104242521B (en) | 2014-10-14 | 2014-10-14 | A kind of bimodulus motor generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538070.2A CN104242521B (en) | 2014-10-14 | 2014-10-14 | A kind of bimodulus motor generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104242521A CN104242521A (en) | 2014-12-24 |
| CN104242521B true CN104242521B (en) | 2016-06-01 |
Family
ID=52230086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410538070.2A Active CN104242521B (en) | 2014-10-14 | 2014-10-14 | A kind of bimodulus motor generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242521B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305753A (en) * | 2015-11-04 | 2016-02-03 | 南京航空航天大学 | Three-phase (6/5)k doubly salient motor structure |
| CN106849582B (en) * | 2017-03-20 | 2019-03-08 | 山东理工大学 | A kind of body-sensing vehicle permanent magnetism hub motor |
| CN106787557B (en) * | 2017-03-20 | 2019-02-26 | 山东理工大学 | A concentrated winding electric excitation doubly salient motor |
| CN106849578B (en) * | 2017-03-20 | 2019-02-15 | 山东理工大学 | A kind of four phase doubly salient permanent magnet motors |
| CN106787595B (en) * | 2017-03-20 | 2019-01-18 | 山东理工大学 | A kind of two-phase electrical excitation stepper motor |
| CN106787286B (en) * | 2017-03-20 | 2019-04-30 | 山东理工大学 | A dual-mode reluctance motor |
| CN106877607A (en) * | 2017-04-11 | 2017-06-20 | 东南大学 | Winding separated bearingless synchronous reluctance motor with Halbach permanent magnet array |
| CN106981965B (en) * | 2017-05-10 | 2019-04-12 | 山东理工大学 | A kind of electric vehicle electrical excitation hub motor |
| CN109462296B (en) * | 2018-11-26 | 2021-01-29 | 南通巨升非晶科技股份有限公司 | Electric excitation and switch reluctance dual-state motor for automobile |
| CN110707842A (en) * | 2019-12-03 | 2020-01-17 | 史政齐 | Servo motor for inhibiting reluctance torque pulsation |
| CN111817640B (en) * | 2020-07-30 | 2025-04-04 | 西安晶云腾机电科技有限公司 | A three-phase three-wire switched reluctance motor drive system, control method and application |
| CN113315427B (en) * | 2021-06-11 | 2022-10-18 | 山东理工大学 | Separately excited hollow pulse generator excitation circuit capable of recycling residual excitation energy |
-
2014
- 2014-10-14 CN CN201410538070.2A patent/CN104242521B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104242521A (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104242521B (en) | A kind of bimodulus motor generator | |
| CN103780042B (en) | A kind of brushless direct-current reluctance type starter-generator | |
| CN104242580B (en) | A kind of automobile is with variable winding starting electromotor | |
| CN104579067B (en) | Excitation fault fault-tolerant power generation system of double-salient electro-magnetic motor and control method of system | |
| CN103001423B (en) | Internal-external double-stator electro-magnetic double-salient starter generator | |
| CN103026614B (en) | The controller of permanent magnet alternator and motor and system | |
| CN108880363A (en) | Three-level formula brushless synchronous machine asynchronous starting control method and system | |
| Liu et al. | Operation principle and topology structures of axial flux-switching hybrid excitation synchronous machine | |
| CN102545754B (en) | Winding open circuit type permanent magnet double-salient-pole starting power generation system | |
| CN104753160B (en) | A kind of automobile start generator and its control device | |
| CN104505961B (en) | A kind of outer rotor dynamotor | |
| Zhao et al. | Characteristics analysis of five-phase fault-tolerant doubly salient electro-magnetic generators | |
| Sulaiman et al. | Investigation of field excitation switched flux motor with segmental rotor | |
| CN108880047B (en) | Permanent magnet motor and control method and system for same | |
| CN103701286B (en) | A High Reliability Four-Phase AC Starter Generator | |
| CN103475112A (en) | Switched reluctance generator | |
| CN2922268Y (en) | Three-phase double-full-control bridge power device topology control device | |
| Awari et al. | Speed control and electrical braking of axial flux BLDC motor | |
| CN104767466B (en) | The starting-generating system that a kind of winding automatically switches | |
| KR102278969B1 (en) | Method for moving employing Axial Flux Permanent Magnet brushless DC motor for controlling to location sensorless | |
| KR100698218B1 (en) | Drive Circuit of Hybrid Induction Motor | |
| CN103231663B (en) | Low-cost driving system with three independent power supplies and for electromobile | |
| JP2019187058A (en) | Pole change motor device | |
| CN113746401B (en) | Aviation electric excitation starting motor excitation loop topological structure and excitation method thereof | |
| CN108683312A (en) | A kind of switched reluctance machines structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20141224 Assignee: Jun Tang Ling Ou, Shandong Automobile Manufacturing Co., Ltd. Assignor: Shandong University of Technology Contract record no.: 2017370000023 Denomination of invention: Double-mode electric power generator Granted publication date: 20160601 License type: Exclusive License Record date: 20170401 |