baber/WOPTO huggingface dataset:
Patent WO-2020048266-A1 (WO)
Title: Special device and method for cement product surface microcrystallization
Inventor: SHI YONG
IPC: E04G21/06
Filed: 2019-08-01
Abstract: A special device and method for cement product surface microcrystallization. The specific device comprises a vibrator (1), a vibration signal generator (2), a power amplifier (3), and a vibration transmission body; a signal output end of the vibration signal generator (2) is connected to a signal input end of the power amplifier (3); a signal output end of the power amplifier (3) is connected to a signal input end of the vibrator (1); the vibrator (1) is connected to the vibration transmission body; the vibration transmission body contacts a cement product subjected to initial setting. The method for cement product surface microcrystallization comprises, after pouring and before final setting, applying vibration to the outer or inner surface of a cement product, a vibration frequency being greater than or equal to 1 KHz, and a vibration duration being greater than or equal to 5 minutes. The surface layer of a cement product produced using the device and method is formed with a structural layer which has a certain thickness, high density, low permeability, in which the surface is coated with uniform granular crystals or gel phases, so that the cement product has excellent aging resistance.
Patent WO-2020057284-A1 (WO)
Inventor: SU XIN
IPC: H04W72/04
Filed: 2019-08-07
Abstract: The present application relates to the technical field of communications and provides a method and apparatus for determining channel state information (CSI). The method comprises: a network side device determines a measurement mode for CSI, the measurement mode being that the network side device performs transmission using M code words by means of transmit points corresponding to M demodulation reference signal (DMRS) port groups, wherein M is greater than or equal to 1, and each of the code words corresponds to one DMRS port group; the network side device determines N CSI-RS resources according to the measurement mode, the N CSI-RS resources being used for a terminal to determine CSI of transmit channels corresponding to the M code words, the transmit channels corresponding to the code words being transmit channels from the transmit points of the code words to the terminal, M being less than or equal to N. By means of the method, a method for determining CSI suitable for multi-point non-coherent transmission is provided.
Patent WO-2020048333-A1 (WO)
Title: Knowledge base update method and apparatus, and computer device and storage medium
Inventor: LIU DAN
IPC: G06F16/36
Filed: 2019-08-26
Abstract: A knowledge base update method, comprising: obtaining first update data corresponding to a medical knowledge base; extracting a first medical word from the first update data; obtaining a first application word corresponding to the first medical word according to a medical knowledge graph; querying second update data corresponding to the first application word; and updating an application knowledge base according to the second update data.
Patent WO-2021017086-A1 (WO)
Title: Industrial robot grinding and polishing device and method for use thereof
Inventor: KONG JIANBIN
IPC: B24B27/00
Filed: 2019-08-30
Abstract: Provided is an industrial robot grinding and polishing device, comprising: a work platform (1); a grinding mechanism (2) is fixed on the top of the work platform (1), and used for grinding a metal member; a polishing mechanism (3) is fixed on the top of the work platform (1) and located on the right side of the grinding mechanism (2), and is used for polishing the metal member; a material loading mechanism (4) is fixed on the top of the work platform (1), and used for placing and fixing the metal member; a material moving mechanism (5) is fixed on the top of the work platform (1), and is used for driving the metal member to move between the grinding mechanism (2), the polishing mechanism (3), and the material loading mechanism (4).
Patent WO-2020088153-A1 (WO)
Inventor: CHEN YAN
IPC: G10L21/0208
Filed: 2019-09-24
Abstract: 语音处理方法、装置、存储介质和电子设备，其中语音处理方法包括获取原始语音(101)，若原始语音为混响语音，则将原始语音输入至预先训练的生成式对抗网络模型的生成子模型，其中，生成子模型用于对原始语音进行去混响处理(102)，将生成子模型的输出语音确定为去混响语音(103)。
Patent WO-2020063680-A1 (WO)
Inventor: WU QI
IPC: H01M4/36
Filed: 2019-09-25
Abstract: A positive electrode active material and a preparation method therefor, an electrochemical cell, a battery module, a battery pack, and an apparatus. The positive electrode active material comprises a kernel and a coating layer, wherein the coating layer coats a surface of the kernel. The kernel is selected from ternary materials having a molecular formula of Li 1+a [Ni x Co y Mn z M b M' c ]O 2-d Y d , wherein a doping element M is one or several selected from among Zr, Ti, Te, Sb, Ca, and Si, a doping element M' is one or several selected from among Mg, Zn, Al, B, Ce, and Fe, and a doping element Y is one or several selected from among F, Cl, and Br, -0.1≤a≤0.2, 0≤d≤0.1, 0.7≤x<1, 0<y<0.3, 0<z<0.3, 0<b≤0.1, 0<c≤0.1, x+y+z+b+c＝1, and the respective distributions of the doping elements M, M', and Y in the kernel satisfy: a decreasing mass concentration gradient from an outer side of the kernel to the center of the kernel; the substance of the coating layer is an oxide of a coating element M", and M" is one or several selected from among Mg, Zn, Al, B, Ce, and Fe. The mass ratio of the coating element M" in the coating layer to the doping element M' in the kernel is 1: (1-5). The positive electrode active material has the features of high gram capacity, high structural stability, and high thermal stability, and may enable an electrochemical cell to have excellent cycle performance and storage performance while having high initial discharge gram capacity.
Patent WO-2021056280-A1 (WO)
Inventor: XIAO LINGLING
IPC: H04L27/26
Filed: 2019-09-25
Abstract: Les modes de réalisation de la présente divulgation concernent un procédé et un appareil de communication d'Entrées-Multiples Sorties-Multiples (MIMO). Selon un mode de réalisation de la présente divulgation, un procédé peut consister : à transmettre des informations de configuration de préemption de liaison descendante à un équipement utilisateur (UE), les informations de configuration de préemption de liaison descendante comprenant une première indication indiquant une position de départ d'une première indication de préemption dans des premières informations de commande de liaison descendante (DCI); à transmettre les premières DCI comprenant la première indication de préemption à l'UE. Les modes de réalisation de la présente divulgation concernent des procédés d'indication de préemption dans une transmission multi-TRP.
Patent WO-2020063918-A1 (WO)
Inventor: LIU LEI
IPC: H01L29/78
Filed: 2019-09-27
Abstract: A semiconductor power device, comprising: a semiconductor substrate (200); gate trenches (201) and body regions (26) located in the semiconductor substrate (200) and sequentially alternately arranged at intervals; a gate dielectric layer (22), a first control gate (33), a second control gate (23), an isolation dielectric layer (24) and a shield gate (25) located in each of the gate trenches (201); a source region (27) located in each of the body regions (26) and close to one side of the second control gate (23); and a source electrode contact hole (203) located above each of the body regions (26), wherein the source electrode contact hole (203) extends towards one side of the first control gate (33) to above the gate trench (201); and the source region (27), the body region (26), the first control gate (33) and the shield gate (25) are all externally connected to a source electrode voltage by means of a source electrode metal layer (29) inside the source electrode contact hole (203).
Patent WO-2020114070-A1 (WO)
Inventor: LIU ZHENGGANG
IPC: H04W24/04
Filed: 2019-10-09
Abstract: 本申请实施例提供一种接入网配置方法、装置、网管设备及存储介质，包括：配置设备树，设备树包括至少一个设备ME(S201)；配置承载树，包括配置承载树包括的至少一个承载ME与设备树中的设备ME之间的引用关系(S202)；配置业务树，包括配置业务树包括的至少一个业务ME与承载树中的承载ME之间的引用关系(S203)。
Patent WO-2020088231-A1 (WO)
Title: Negative electrode piece, secondary battery, battery module, battery pack and device
Inventor: MA JIANJUN
IPC: H01M4/66
Filed: 2019-10-14
Abstract: Disclosed are a negative electrode piece, a secondary battery (5), a battery module (4), a battery pack (1) and a device, wherein the negative electrode piece comprises a negative electrode current collector and a plurality of active material layers formed on the negative electrode current collector. The plurality of active material layers at least comprise a first active material layer and a second active material layer. The first active material layer comprises a first negative active material, and the second active material layer comprises a second negative active material. The ratio of the gram capacity of the negative active material of the first active material layer to the thickness thereof is 3.5-10.0. The ratio of the gram capacity of the negative active material of the second active material layer to the thickness thereof is 6.5-23.0. The battery using the negative electrode piece can have both a high energy density and a good cycle life.
Patent WO-2020248465-A1 (WO)
Inventor: LIN JUN-HAN
IPC: F21V19/00
Filed: 2019-10-24
Abstract: 一种底座(300)，包括：塑胶本体(310)，开设有贯穿塑胶本体(310)两端的通孔(3142)，通孔(3142)用于为光源(200)提供光线通道，塑胶本体(310)包括光线入射端及光线射出端；散热片(320)，设于塑胶本体(310)的侧壁(312)上，且散热片(320)包括散热表面(322)，散热表面(322)外露处于塑胶本体(310)，以当散热片(320)与光源(200)之间建立热量传递路径时，散热表面(322)直接与外界进行热交换为光源(200)散热。还公开了一种光发射模组，一种3D识别装置，以及一种智能终端。
Patent WO-2020083405-A1 (WO)
Title: Mécanisme autobloquant pour support de téléviseur et support de téléviseur
Inventor: SUN JINYU
IPC: F16M11/10
Filed: 2019-10-28
Abstract: L'invention concerne un mécanisme autobloquant pour un support de téléviseur et le support de téléviseur. Le mécanisme autobloquant comprend une première plaque de connexion (3) et une deuxième plaque de connexion (4). La première plaque de connexion (3) est pourvue d'un premier trou (31) et d'un trou en forme de rein (32) situé au-dessous du premier trou (31), et la deuxième plaque de connexion (4) est pourvue d'un trou en forme d'arc (41) et d'un deuxième trou (42) situé au-dessous du trou en forme d'arc (41). Le mécanisme autobloquant comprend en outre un premier pivot (51) et un deuxième pivot (52). La première plaque de connexion (3) est reliée de manière coulissante à la deuxième plaque de connexion (4) au moyen du premier pivot (51) qui passe à travers le premier trou (31) et le trou en forme d'arc (41), et la première plaque de connexion (3) est reliée de manière coulissante à la deuxième plaque de connexion (4) au moyen du deuxième pivot (52) qui passe à travers le trou en forme de rein (32) et le deuxième trou (42). Le mécanisme autobloquant peut réaliser le réglage de l'angle d'inclinaison d'un téléviseur en étant actionné par une seule personne, et peut s'arrêter et se verrouiller à n'importe quelle position d'inclinaison du téléviseur, son fonctionnement étant de ce fait simple et commode et celui-ci permettant d'économiser de la main d'oeuvre et des ressources matérielles.
Patent WO-2020134519-A1 (WO)
Inventor: HE XUEMING
IPC: F04C2/12
Filed: 2019-10-29
Abstract: 一种确定罗茨泵转子型线合理设计区域的方法及其应用。所述方法在建立罗茨泵转子型线和性能参数的关系式之后，进一步确定避免封闭容积及根切的约束条件，从而确定罗茨泵转子叶峰曲线的合理设计区域，在设计罗茨泵转子型线时给出参考，即叶峰曲线不在此合理设计区域内的转子型线必然会导致在应用中出现封闭容积或者根切的问题，从而使得罗茨泵转子型线在设计时即可避免设计出会导致封闭容积或者根切的转子型线，而无需等到设计完成之后才发现该转子型线设计不合理，从而提高转子型线的设计效率。
Patent WO-2020134782-A1 (WO)
Inventor: JIN NINGDI
IPC: H04W64/00
Filed: 2019-11-25
Abstract: 本公开涉及一种基于LTE信号的定位方法、装置及可读存储介质，包括：获取终端发送的测量数据，确定测量数据对应的主小区的位置；获取预设区域内各建筑的中心经纬度所形成的集合D；在主小区的参考信号接收功率值大于门限值σ或主小区的时间提前量小于等于预设参数的情况下，在集合D中获取与主小区的位置之间具有预设距离的建筑组成的集合，确定为一级定位区域；获取一级定位区域与主小区的天线的覆盖角度范围相重合的建筑集合，并确定为二级定位区域，根据二级定位区域确定终端的位置。
Patent WO-2020108642-A1 (WO)
Inventor: LI YUCHEN
IPC: A61P35/02
Filed: 2019-11-29
Abstract: Provided is an immune cell mixture comprising an immune cell genetically modified with a chimeric antigen receptor targeting CD19 and an immune cell genetically modified with a chimeric antigen receptor targeting CD30 and an application thereof. The chimeric antigen receptor targeting CD19 and the chimeric antigen receptor targeting CD30 each comprises an antigen-binding domain, a transmembrane domain, a costimulatory signaling region, a CD3ζ signaling domain, and an inducible suicide fusion domain in tandem arrangement. The chimeric antigen receptors specifically recognize tumor surface antigens CD19 and CD30. By using the combination of CAR-T cells targeting both antigens, better therapeutic effects are achieved for CD19-negative relapse and B cell tumors with low CD19 expression and the disease is easier to be relieved compared to other single chimeric antigen receptor T cells.
Patent WO-2020125469-A1 (WO)
Inventor: LEGNEDAHL NIKLAS
IPC: B60W10/08
Filed: 2019-12-09
Abstract: A system, method and computer program product for preparing a vehicle (1) for a planned mission, the method comprising (S3) determining an energy consumption for at least one part of the planned mission of at least a first energy consuming vehicle component (10a, 10b, 10c, 10d) and (S4) determining a mission preparation activity of the at least first energy consuming vehicle component (10a, 10b, 10c, 10d), wherein the mission preparation activity is utilizing an electrical connection between a vehicle onboard electric power system (90) and an external energy source (50), wherein the at least first energy consuming vehicle component (10a, 10b, 10c, 10d) is connected to the vehicle onboard electric power system (90).
Patent WO-2020228315-A1 (WO)
Title: 一种变焦par灯及其实现方法
Inventor: YAO ZUOHONG
IPC: F21S8/00
Filed: 2019-12-13
Abstract: 一种变焦PAR灯及其实现方法，包括灯壳(1)，灯壳(1)底部连接灯头(2)，灯壳(1)内部设有驱动电路(3)，灯壳(1)内还设有散热座(4)，散热座(4)中连接有COB光源固定座(5)，COB光源固定座(5)内设置COB光源(6)，COB光源(6)与驱动电路(3)连接，透镜固定座(7)与COB光源固定座(5)形成相对上下移动设置，透镜固定座(7)内设置透镜(8)，透镜(8)上部与透镜固定环(9)连接。该灯结构简单、造价便宜、同一灯具变焦方式简单及散热性好等特点。
Patent WO-2020125734-A1 (WO)
Title: Installation structure for trocar
Inventor: WANG JIANCHEN
IPC: A61B17/00
Filed: 2019-12-19
Abstract: Disclosed is an installation structure for a trocar (100), comprising a connecting arm (1) disposed on a side wall of the trocar (100), a mounting base (2) connected to an operating arm, and a locking mechanism (3) disposed on the mounting base (2). The locking mechanism (3) comprises a drive disk (31) and two oppositely arranged spring bolts (32), a lower end surface of the driving disk (31) is provided with a spiral groove (311), each of the two spring bolts (32) is provided with a joint pin (321); the spring bolts (32) are respectively disposed on the left side and the right side of the axis of the drive disk (31), the joint pin (321) is inserted into the spiral groove (311), the space between the two spring bolts (32) forms a bayonet (4), and each of the two opposite sides of the connecting arm (1) is provided with a snap groove (11). For installation, the trocar (100) can be quickly positioned and installed by sticking the connecting arm (1) into the bayonet (4) and then rotating the drive disk (31) to make the two spring bolts (32) get close to each other and snap into the snap grooves (11) in the two side walls of the connecting arm (1). For removal, the trocar (100) can be quickly removed from the mounting base (2) by rotating the drive disk (31) in the opposite direction to make the two spring bolts (32) get away from each other and exit from the snap grooves (11) in the two side walls of the connecting arm (1).
Patent WO-2021128015-A1 (WO)
Inventor: XU FENGHUA
IPC: H04W72/12
Filed: 2019-12-24
Abstract: Un procédé de commande de dispositif consiste à : déterminer un canal initial d'un dispositif ayant un second rôle ; déterminer un canal à tester; acquérir la somme du nombre de dispositifs ayant le second rôle travaillant sur le canal initial et le canal à tester dans un environnement ; acquérir des paramètres d'inactivité de canal ; acquérir l'intensité de signal reçu des dispositifs ; et s'il est détecté que la somme du nombre de dispositifs est inférieure à une première valeur de seuil prédéfinie, les paramètres d'inactivité de canal satisfont une première condition, et l'intensité de signal reçu d'un dispositif cible est supérieure à une seconde valeur de seuil prédéfinie, déterminer un canal cible.
Patent WO-2020143456-A1 (WO)
Inventor: LI HUI
IPC: H04B7/0456
Filed: 2019-12-25
Abstract: Disclosed are a codebook constraint and codebook parameter determination method and apparatus, wherein same are used for preventing the generation of a beam with an orientation bringing about interference, thereby preventing interference. The codebook constraint method comprises: determining codebook sub-set constraint indication information for indicating that one or more beam groups in a candidate combination beam set are constrained and coefficients in a first coefficient set corresponding to each beam of the beam groups are constrained (S101); and sending the codebook sub-set constraint indication information to a terminal (S102).
Patent WO-2020220710-A1 (WO)
Inventor: ZHANG QINGYI
IPC: H04R1/20
Filed: 2019-12-27
Abstract: The present invention discloses a speaker module, comprising a housing formed with a receiving cavity and a speaker unit contained in the receiving cavity; the speaker module comprises a conductive element and a limiting structure located in the rear acoustic cavity; the conductive element comprises a first body portion, a second body portion, and a third body portion that are sequentially formed by bending along the long axis direction; the first body portion comprises at least a welding portion for electrical connection with the speaker unit, the first body portion further comprises an extension portion extending from the edge of the section of the first body portion along the short axis direction; the extension portion is configured to abut against the limiting structure to limit the position of the welding portion on the first body portion from shifting. The speaker module provided by the present invention can effectively eliminate the problem that the position of the welding portion on the conductive element is easily shifted due to the large margin at the bending position of the conductive element, which results in poor welding quality and poor reliability of the welding portion.
Patent WO-2020140866-A1 (WO)
Title: 一种塑料箱内部支撑零件结构
Inventor: JIANG LIN
IPC: B65D6/34
Filed: 2019-12-30
Abstract: 一种塑料箱内部支撑零件结构，包括支撑杆（1）以及设置在支撑杆两端的端面部件（2），支撑杆由材料一（4）制成，端面部件外面由材料二（5）进行包覆，端面部件的外边缘（3）呈规则或不规则形状，该结构解决了第二种材料包裹第一种材料并连接于塑料箱内壁时易拉脱的问题，该结构在油箱发生冲击时，支撑杆首先断裂，不对油箱表面产生破坏。
Patent WO-2020207071-A1 (WO)
Title: 一种健身动作识别方法、系统及电子设备
Inventor: ZHAO GUORU
IPC: A63B71/06
Filed: 2019-12-31
Abstract: 一种健身动作识别方法、系统及电子设备。所述方法包括：步骤a：通过九轴惯性传感器和心率传感器分别采集人体运动时的运动数据和心率数据；步骤b：利用运动识别算法，根据所述运动数据和心率数据计算得到所述九轴惯性传感器的合加速度、合角速度、横滚角以及实时心率值；步骤c：根据所述九轴惯性传感器的合加速度、合角速度和横滚角的特征以及实时心率值对健身动作进行识别。根据运动数据的特征和实时心率数据对健身动作进行识别，并很清楚的识别出快跑和慢跑，可以提高健身人群的健身效率，更好、更方便的指导健身人群的训练。
Patent WO-2020143703-A1 (WO)
Inventor: WANG JINGRAN
IPC: C22C45/02
Filed: 2020-01-09
Abstract: 一种非晶带材母合金及其制备方法，属于非晶材料领域。该制备方法包括：非晶合金和渗碳体Fe 3C；将非晶合金和渗碳体Fe 3C置于冶炼炉中进行冶炼处理，得到非晶带材母合金。其中，组成非晶合金的元素包括Fe元素、Si元素和B元素。采用非晶合金和渗碳体Fe 3C作为原料进行冶炼，能够在非晶合金中加入渗碳体Fe 3C，形成所期望的非晶带材母合金，由于渗碳体具有磁性，使得非晶带材母合金的磁感应强度得以显著提升。当该非晶带材母合金用于制备非晶带材时，同样能够显著提高非晶带材的磁感应强度。
Patent WO-2021120353-A1 (WO)
Inventor: LU JIANXI
IPC: A61L27/42
Filed: 2020-01-10
Abstract: Disclosed are a metal prosthesis of a composite porous biological ceramic (12), and a preparation method therefor. A metal frame (11) is prepared by using a medical metal material; the metal frame (11) is filled with a pore-forming agent to obtain a complex of a pore-forming framework and the metal frame (11); a prefabricated ceramic slurry is poured into the complex of the pore-forming framework and the metal frame (11) to obtain a complex of a ceramic blank and the metal frame (11); and the pore-forming agent in the complex of the ceramic blank and the metal frame (11) is removed and sintering is performed to obtain a complex of the porous biological ceramic (12) and the metal. The metal prosthesis has the firmness and durability of the metal and the good tissue repair function of the porous biological ceramic (12), so that requirements for a surgical implant prosthesis can be met; and the shape, size, and mechanical and biological properties of the complex of the porous biological ceramic (12) and metal can be customized for a patient. The feasibility, repeatability and practicability are high. The metal prosthesis can be widely used in the fields of biomedicine and veterinary medicine.
Patent WO-2021056937-A1 (WO)
Inventor: YANG RONG
IPC: A24D1/20
Filed: 2020-01-17
Abstract: 本实用新型涉及雾化棒技术领域，且公开了加热不燃烧的植物草本雾化棒纸管，包括纸卷，所述纸卷通过白卡纸卷制制成，所述白卡纸的表面一端固定涮有食用硅油，所述白卡纸的表面另一端涂有食用胶水。本实用新型采用食用级白卡纸、食用硅油和食用胶水材料制成纸管，从而使纸管能够长期防渗漏，且采用极少量食用胶水，更安全，更健康，纸管采用平卷多层方式，具有较好的强度与圆度，不易变形。
Patent WO-2021163961-A1 (WO)
Inventor: LING WEI
IPC: H04W72/04
Filed: 2020-02-20
Abstract: La présente divulgation porte, dans certains de ses modes de réalisation, sur un procédé et un appareil de sauts de fréquence multi-faisceaux. Un procédé selon un mode de réalisation de la présente divulgation comprend : la réception d'informations de configuration indiquant deux points de départ prédéfinis dans un domaine fréquentiel, et la transmission d'une pluralité de transmissions de données à l'aide d'un ou de plusieurs faisceaux. Un point de départ dans le domaine fréquentiel de chacune des transmissions de données associées à un faisceau parmi le ou les faisceaux est déterminé par un nouvel indice pour chacune des transmissions de données associées au faisceau sur la base d'un indice de créneau le plus bas et d'un nombre total des transmissions de données associées au faisceau.
Patent WO-2021012671-A1 (WO)
Inventor: SHAO ZHENPING
IPC: C07J7/00
Filed: 2020-02-24
Abstract: Disclosed is a highly efficient preparation method for progesterone with low pollution, pertaining to the technical field of preparation and processing of steroid hormone drugs. The method uses 21-hydroxy-20-methylpregna-4-en-3-one as a starting material, oxidizing the same into an aldehyde using a TEMPO-NaClO reagent, and subjecting the aldehyde to enamination and copper catalytic oxidation degradation to prepare progesterone. The preparation method for progesterone of the present invention has the following advantages: the raw materials and reagents are cheap and easily available, bringing extremely high market competitiveness in terms of equipment investment and production cost; the reaction is mild and safe, and is easy to control and operate; the reaction yield is high, and the purification is simple and convenient; the reagents used cause low environmental pollution, and especially, high pollution reagents containing chromium are not used, which conforms to the development trend of green chemistry, and therefore has good economic and social benefits.
Patent WO-2020173433-A1 (WO)
Title: Method for controlling auxiliary power supply system of high-speed motor train unit, system and high-speed motor train unit
Inventor: REN XIANGCHEN
IPC: H02M7/00
Filed: 2020-02-25
Abstract: Provided are a method for controlling an auxiliary power supply system of a high-speed motor train unit, a system and a high-speed motor train unit, wherein the method for controlling an auxiliary power supply system is: acquiring closing states of a plurality of circuit breakers among carriage groups of the high-speed motor train unit (S101); carrying out interval grouping on traction auxiliary converters among the carriage groups according to the closing states of the plurality of circuit breakers (S102); controlling one traction auxiliary converter in the same interval group to start (S103); simultaneously starting other traction auxiliary converters in the interval group according to the voltage phase output from the started traction auxiliary converter in the interval group (S104). The above technical solution achieves the purpose of shortening the whole starting time of the auxiliary power supply system on the basis of avoiding the problem of phase-to-phase short circuit caused by the simultaneous starting the traction auxiliary converter.