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1. 发明授权

US11367565B2 Magnetic structures for low leakage inductance and very high efficiency 有权
公开(公告)号：US11367565B2
公开(公告)日：2022-06-21
申请号：US17189096
申请日：2021-03-01
申请人： Rompower Technology Holdings, LLC
发明人： Ionel Jitaru
IPC分类号： H01F30/02 , H01F30/06 , H01F27/245
摘要： A magnetic and electrical circuit element including magnetic-flux-conducting posts, and a multi-layer structure formed with an electrically-conductive material. The multi-layer structure includes multiple layers forming a stack of layers along a length of the posts, said multi-layer structure configured as primary and secondary windings of a transformer. The primary winding is embedded in the multi-layer structure and wound around the magnetic-flux-conducting posts in such a way that a magnetic field induced in each of the magnetic-flux-conducting posts has a magnetic field polarity opposite to a polarity of the respective magnetic field of the magnetic-flux-conducting post adjacent the respective magnetic-flux-conducting post. Around each of the magnetic-flux-conducting posts, there is a respective one of the secondary windings connected to a semiconductor device. The magnetic-flux-conducting posts are connected magnetically by continuous magnetic-flux-conducting plates, each of which is shaped to ensure a continuous flow of the magnetic field successively through adjacent magnetic-flux-conducting posts.

2. 发明申请

US20210319945A1 AUTOTRANSFORMER RECTIFIER UNIT WINDING ARRANGEMENT 有权
公开(公告)号：US20210319945A1
公开(公告)日：2021-10-14
申请号：US17212154
申请日：2021-03-25
申请人： Hamilton Sundstrand Corporation
发明人： Ponggorn KULSANGCHAROEN , Aaron DAY
IPC分类号： H01F27/28 , H01F30/02 , H01F27/24 , H01F41/04
摘要： A transformer coil structure includes a core defining an axis around which is wound a primary winding, and two secondary windings wound around the core over or under the primary winding. The windings are separated into two or more columns along the axial direction of the core by one or more gaps extending radially through the windings to the core.

3. 发明授权

US10742133B1 Power converters, power distribution systems and methods of converting power 有权
公开(公告)号：US10742133B1
公开(公告)日：2020-08-11
申请号：US16257907
申请日：2019-01-25
申请人： Hamilton Sundstrand Corporation
发明人： Frank Z. Feng
IPC分类号： H02M7/08 , H02M7/219 , H01F30/12 , H01F30/02 , H02M7/06
摘要： A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.

4. 发明授权

US10720854B2 72-pulse AC-DC converter for power quality improvement 有权
公开(公告)号：US10720854B2
公开(公告)日：2020-07-21
申请号：US15224697
申请日：2016-08-01
申请人： Rohollah Abdollahi
发明人： Rohollah Abdollahi
IPC分类号： H02M7/08 , H02M1/12 , H02M1/42 , H02M7/04 , H01F30/14 , H01F30/02
摘要： A novel 72-pulse AC-DC converter based on a 36-pulse converter is designed and implemented in this invention. Combining the outputs of two parallel 18-pulse diode bridges, consisting of nine legs of diode rectifiers, results in a 36-pulse topology. A zero sequence blocking transformer (ZSBT) is designed and applied to the proposed scheme guarantying the independent operation of the two bridges. To achieve a 72-pulse output, a pulse doubling circuit is applied which is inherently a tapped inter-phase transformer. A polygon-connected autotransformer platform is designed and added to the converter, making the proposed scheme suitable for retrofit applications. The proposed solution is a tradeoff among the pulse number, the transformer platform, the complexity of the scheme and the cost. The proposed scheme has an optimized configuration in this regard. The simulation results show that the proposed scheme improves the power quality indices.

5. 发明申请

US20200052574A1 72-PULSE AC-DC CONVERTER FOR POWER QUALITY IMPROVEMENT 审中-公开
公开(公告)号：US20200052574A1
公开(公告)日：2020-02-13
申请号：US15224697
申请日：2016-08-01
申请人： Rohollah Abdollahi
发明人： Rohollah Abdollahi
IPC分类号： H02M1/12 , H02M1/42 , H02M7/04 , H01F30/02 , H01F30/14 , H02M7/08
摘要： A novel 72-pulse AC-DC converter based on a 36-pulse converter is designed and implemented in this invention. Combining the outputs of two parallel 18-pulse diode bridges, consisting of nine legs of diode rectifiers, results in a 36-pulse topology. A zero sequence blocking transformer (ZSBT) is designed and applied to the proposed scheme guarantying the independent operation of the two bridges. To achieve a 72-pulse output, a pulse doubling circuit is applied which is inherently a tapped inter-phase transformer. A polygon-connected autotransformer platform is designed and added to the converter, making the proposed scheme suitable for retrofit applications. The proposed solution is a tradeoff among the pulse number, the transformer platform, the complexity of the scheme and the cost. The proposed scheme has an optimized configuration in this regard. The simulation results show that the proposed scheme improves the power quality indices.

6. 发明授权

US10199161B2 Autotransformer rectifier unit 有权
公开(公告)号：US10199161B2
公开(公告)日：2019-02-05
申请号：US15433241
申请日：2017-02-15
申请人： Goodrich Control Systems
发明人： Virgilio Valdivia-Guerrero , Daniel Diaz-Lopez , Joshua Parkin
IPC分类号： H02M7/06 , H01F30/12 , B64D47/00 , H01F30/02 , H02M7/08
摘要： The present improvement essentially integrates a DC link inductance within an interphase power transformer (IPT). The integration is achieved by creating auxiliary magnetic paths for leakage inductance inside the IPT core. The magnetic path can be created, for example, by incorporating extra portions of magnetic material commonly referred to hereinafter as shunts. The IPT flux shared between windings does not cross these shunts. Therefore, this magnetic path increases the self-inductance of the IPT but does not contribute to the mutual inductance between windings. This extra magnetic path allows for leakage inductance of a much higher quantity than that achievable with a conventional IPT.

7. 发明授权

US09601258B2 Symmetrical step-up and step-down autotransformer delta topology 有权
公开(公告)号：US09601258B2
公开(公告)日：2017-03-21
申请号：US14328937
申请日：2014-07-11
申请人： The Boeing Company
发明人： Jian Huang , Eugene V. Solodovnik , Kamiar J. Karimi
IPC分类号： H01F30/12 , H01F27/29 , H02M7/04 , H01F30/02 , H02M7/08
CPC分类号： H01F30/12 , H01F27/29 , H01F30/02 , H02M7/04 , H02M7/08 , H05K7/20927
摘要： A multi-phase autotransformer (10) is disclosed. The exemplary transformer includes primary windings PWA, PWB, PWC) and secondary windings (SWA1-SWA4, SWB1-SWB4, SWC1-SWC4). The primary windings are connected in a delta configuration and to a three-phase input voltage source. Each secondary winding is electrically connected to a primary winding but is magnetically coupled to a different primary winding. Three sets of secondary windings provide three three-phase outputs (350A, 350B, 350C), each of which has a voltage which is less than the three-phase input voltage, the three-phase output of each set being phase-shifted with respect to the other sets. These three sets also, collectively, provide a multi-phase output (325). Another set of secondary windings, in conjunction with the input voltage, provides another multi-phase phase output (360) which has approximately the same voltage as the three-phase input voltage.

8. 发明授权

US09124169B2 Autotransformer system reducing total harmonic distortion 有权
标题翻译：自耦变压器系统减少总谐波失真
公开(公告)号：US09124169B2
公开(公告)日：2015-09-01
申请号：US13868693
申请日：2013-04-23
申请人： Unico, Inc.
发明人： Mark E. Garlow , William S. Hammel
IPC分类号： H02M5/14 , H02M1/12 , H01F30/02 , H02M7/08 , H02P29/00 , H02M1/14
CPC分类号： H02M1/12 , H01F30/02 , H01F30/14 , H02M1/14 , H02M7/08 , H02P29/50
摘要： There is disclosed an apparatus and method to reduce total harmonic distortion input into a 24-pulse autotransformer system and the autotransformer system itself. The 24-pulse autotransformer system is configured to receive an input of a first voltage and produce an output voltage of a second voltage. The system includes a pair of autotransformers coupled to an AC power source. One winding of each phase of the first autotransformer has a turn ratio to effect a decrease in the voltage across said winding over a symmetric voltage value and a second winding of each phase of the first autotransformer has a turn ratio to effect a decrease in the voltage across said winding over a symmetric voltage value, thereby reducing total harmonic distortion (THD) in the input current to the system without a zero sequence blocking transformer.
摘要翻译：公开了一种减少输入到24脉冲自耦变压器系统和自耦变压器系统本身的总谐波失真的装置和方法。 24脉冲自耦变压器系统被配置为接收第一电压的输入并产生第二电压的输出电压。该系统包括耦合到AC电源的一对自耦变压器。第一自耦变压器的每相的一个绕组具有匝数比，以在对称电压值上实现所述绕组两端的电压的降低，并且第一自耦变压器的每相的第二绕组具有匝数比以实现电压的降低跨越所述绕组超过对称电压值，从而减少到没有零序阻塞变压器的系统的输入电流中的总谐波失真（THD）。

9. 发明授权

US09105389B2 Cooling system for dry transformers 有权
标题翻译：干式变压器冷却系统
公开(公告)号：US09105389B2
公开(公告)日：2015-08-11
申请号：US13941197
申请日：2013-07-12
申请人： ABB TECHNOLOGY AG
发明人： Marcos Bockholt , Frank Cornelius , Jens Tepper , Burak Esenlik , Bhavesch Patel , Benjamin Weber , Arthouros Iordanidis , Jasmin Smajic , Thorsten Steinmetz , Bernardo Galletti
IPC分类号： H01F27/08 , H01F27/28 , H01F30/02 , H01F30/12 , H01F27/32
CPC分类号： H01F27/085 , H01F27/2876 , H01F30/12 , H01F2027/328
摘要： The disclosure is related to a dry transformer, which includes a transformer core with at least two parallel limbs and upper and lower yokes, and at least two hollow cylindrical coils, each arranged as neighbored coils around a limb of the at least two parallel limbs. A cooling system can include at least one wall-like diaphragm in-between the neighbored coils, which is in parallel to the orientation of the limbs.
摘要翻译：本公开涉及一种干式变压器，其包括具有至少两个平行四肢和上下轭铁的变压器铁芯，以及至少两个中空圆柱形线圈，每个中空圆柱形线圈被布置为围绕所述至少两个平行四肢的肢体的相邻线圈。冷却系统可以包括位于相邻线圈之间的至少一个壁状隔膜，其与四肢的取向平行。

10. 发明申请

US20140266557A1 Inherently Balanced Phase Shifting AutoTransformer 审中-公开
标题翻译：固有平衡相移AutoTransformer
公开(公告)号：US20140266557A1
公开(公告)日：2014-09-18
申请号：US14214165
申请日：2014-03-14
申请人： Jacob Justice
发明人： Jacob Justice
IPC分类号： H01F30/02 , H01F30/06
CPC分类号： H01F30/02 , H01F30/12
摘要： A device and method of use for a phase shifting autotransformer is disclosed which has inherently balanced impedance characteristics. This is achieved by having the coil windings structured such that the following two requirements are met. Equivalent winding sections must have essentially equal lengths, occupy equal radial volumes and therefore exhibit equal resistances. Secondly, semi-bifilar or full-bifilar construction ensures that the inductances generated in each section essentially cancel each other out, minimizing the reactive component of the impedance such that it can be dominated by the resistive component in operation. As a result of these two design elements, the 5th and 7th harmonics that dominate 6-pulse systems can be attenuated much more effectively than was previously possible, improving both the overall performance of the phase shifting autotransformer itself, as well as its associate system.
摘要翻译：公开了一种具有固有平衡阻抗特性的用于相移自耦变压器的装置和方法。这通过使线圈绕组构成使得满足以下两个要求来实现。等效绕组部分必须具有基本相等的长度，占据相等的径向体积，因此具有相等的电阻。其次，半双极或全双相结构确保每个部分中产生的电感基本上相互抵消，使阻抗的无功分量最小化，使得其可以由操作中的电阻部件来支配。作为这两个设计元素的结果，支配6脉冲系统的第5和第7谐波可以比先前可能的更有效地衰减，改善了相移自耦变压器本身及其相关系统的整体性能。

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