公开(公告)号：US09859752B2

公开(公告)日：2018-01-02

申请号：US14732215

申请日：2015-06-05

Applicant: General Electric Company

Inventor： Arvind Kumar Tiwari ,  Yashomani Y. Kolhatkar ,  Silvio Colombi

IPC: H02J9/06 ,  H02J9/08 ,  H02J9/04 ,  H02J11/00

CPC classification number: H02J9/066 ,  H02J9/04 ,  H02J9/08 ,  H02J11/00

Abstract: An uninterruptible power supply (UPS) includes a line terminal, a load terminal, a double-conversion circuit coupled in series, and further includes a bypass circuit, and a synchronize circuit. The line terminal couples to a doubly fed induction generator (DFIG). The load terminal couples to a load having a demanded power. The double-conversion circuit regulates grid power from the line terminal to the demanded power at the load terminal. The bypass circuit is coupled between the line terminal and the load terminal, and configured to deliver regulated power generated by the DFIG to the load terminal when the grid power is lost. The synchronize circuit is coupled between the double-conversion circuit and the DFIG, and, when the grid power is lost, the synchronize circuit injects a current through the double-conversion circuit and into the DFIG, synchronizing the regulated power generated by the DFIG to the demanded power.

公开(公告)号：US09705360B2

公开(公告)日：2017-07-11

申请号：US14306791

申请日：2014-06-17

Applicant: General Electric Company

Inventor： Yashomani Kolhatkar ,  Rajendra Naik ,  Viswanathan Kanakasabai ,  Silvio Colombi

IPC: H02J9/06 ,  H02J3/24 ,  H02J3/38 ,  H02J3/40 ,  G05F3/02 ,  H02J4/00

CPC classification number: H02J9/061 ,  G05F3/02 ,  H02J3/24 ,  H02J3/38 ,  H02J3/40 ,  H02J4/00 ,  H02J9/062 ,  Y10T307/344

Abstract: A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), a ring bus, at least one load electrically coupled to the plurality of UPSs and the ring bus, and a controller communicatively coupled to the plurality of UPSs. The controller is configured to calculate an output voltage frequency for each UPS of the plurality of UPSs, and control operation of each UPS based on the respective calculated output voltage frequencies.

公开(公告)号：US20160359361A1

公开(公告)日：2016-12-08

申请号：US14732215

申请日：2015-06-05

Applicant: General Electric Company

Inventor： Arvind Kumar Tiwari ,  Yashomani Y. Kolhatkar ,  Silvio Colombi

IPC: H02J9/06 ,  H02J9/08 ,  H02J11/00

CPC classification number: H02J9/066 ,  H02J9/04 ,  H02J9/08 ,  H02J11/00

Abstract: An uninterruptible power supply (UPS) includes a line terminal, a load terminal, a double-conversion circuit coupled in series, and further includes a bypass circuit, and a synchronize circuit. The line terminal couples to a doubly fed induction generator (DFIG). The load terminal couples to a load having a demanded power. The double-conversion circuit regulates grid power from the line terminal to the demanded power at the load terminal. The bypass circuit is coupled between the line terminal and the load terminal, and configured to deliver regulated power generated by the DFIG to the load terminal when the grid power is lost. The synchronize circuit is coupled between the double-conversion circuit and the DFIG, and, when the grid power is lost, the synchronize circuit injects a current through the double-conversion circuit and into the DFIG, synchronizing the regulated power generated by the DFIG to the demanded power.

Abstract translation: 不间断电源（UPS）包括串联耦合的线路终端，负载终端，双转换电路，还包括旁路电路和同步电路。 线路端子耦合到双馈感应发电机（DFIG）。 负载端子耦合到具有所需功率的负载。 双转换电路将线路电源的电网调节到负载端子处的需求功率。 旁路电路耦合在线路终端和负载终端之间，并且被配置为在电网电力丢失时将由DFIG产生的稳压电力传送到负载终端。 同步电路耦合在双转换电路和DFIG之间，当电网电源丢失时，同步电路将通过双转换电路的电流注入DFIG，将DFIG产生的稳压电源同步到 要求的权力。

公开(公告)号：US20140152109A1

公开(公告)日：2014-06-05

申请号：US13689776

申请日：2012-11-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Viswanathan Kanakasabai ,  Rajendra Naik ,  Silvio Colombi ,  Said Farouk Said El-Barbari ,  Pradeep Vijayan

IPC: H02J9/00

CPC classification number: H02M3/33584 ,  H02J9/062 ,  H02M2007/4835 ,  Y10T307/615 ,  Y10T307/625

Abstract: A medium voltage uninterruptible power supply system is presented. The system includes a first power converter coupled between a first bus and a second bus. Furthermore, a second power converter operatively coupled to the first power converter via the first bus and the second bus, where the second power converter includes at least three legs, where the at least three legs include a plurality of switching units, and where the plurality of switching units includes at least two semiconductor switches and an energy storage device. Additionally, system includes a direct current link coupled between the first bus and the second bus. Also, system includes an energy source coupled to the second power converter, the direct current link, or a combination thereof via one or more of a third power converter, a transformer, and a fourth power converter. Method of operating a medium voltage uninterruptible power supply system is also presented.

Abstract translation: 介绍了一种中压不间断电源系统。 该系统包括耦合在第一总线和第二总线之间的第一功率转换器。 此外，第二功率转换器通过第一总线和第二总线可操作地耦合到第一功率转换器，其中第二功率转换器包括至少三个支路，其中至少三个支路包括多个开关单元，并且其中多个 的开关单元包括至少两个半导体开关和能量存储装置。 另外，系统包括耦合在第一总线和第二总线之间的直流链路。 而且，系统包括经由第三功率转换器，变压器和第四功率转换器中的一个或多个耦合到第二功率转换器，直流连接或其组合的能量源。 还介绍了操作中压不间断电源系统的方法。

公开(公告)号：US09927466B2

公开(公告)日：2018-03-27

申请号：US14799401

申请日：2015-07-14

Applicant: General Electric Company

Inventor： Silvio Colombi

IPC: H02J7/00 ,  H02J9/00 ,  G01R19/25 ,  H02M7/48 ,  G01R31/42 ,  H02M1/00

CPC classification number: G01R19/2509 ,  G01R31/42 ,  H02M7/48 ,  H02M2001/0009 ,  Y10T307/625

Abstract: A control circuit is described herein. The control circuit includes an oscillator and a processor. The oscillator is configured to generate a reference signal. The processor is coupled to the oscillator. The processor is configured to receive a first output current sample, a second output current sample, and a third output current sample, all of an output current. The first output current sample is first-in-time, the second output current sample is second-in-time, and the third output current sample is third-in-time. The processor is further configured to compute a time-derivative of the output current. The processor is further configured to compute a command variable based on the reference signal, a time-derivative of the reference signal, the third output current sample, and the time-derivative of the output current.

公开(公告)号：US09882424B2

公开(公告)日：2018-01-30

申请号：US14186159

申请日：2014-02-21

Applicant: General Electric Company

Inventor： Yashomani Kolhatkar ,  Pradeep Vijayan ,  Silvio Colombi ,  Rajendra Naik ,  Viswanathan Kanakasabai

IPC: H02J9/06 ,  H02M5/42

CPC classification number: H02J9/062 ,  G06F1/26 ,  G06F1/30 ,  H02J3/08 ,  H02J2009/068 ,  H02M5/42 ,  Y10T307/344

Abstract: A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), a ring bus, at least one load electrically coupled to the plurality of UPSs and the ring bus, and a controller communicatively coupled to the plurality of UPSs. The controller is configured to calculate a phase angle for each UPS of the plurality of UPSs, wherein the phase angle is calculated relative to a common reference angle, and control operation of each UPS based on the respective calculated phase angles.

公开(公告)号：US09831717B2

公开(公告)日：2017-11-28

申请号：US14855930

申请日：2015-09-16

Applicant: General Electric Company

Inventor： Viswanathan Kanakasabai ,  Silvio Colombi ,  Said Farouk Said El-Barbari ,  Rajendra Naik ,  Prashanth Manikumar Chennamsetty

IPC: H02J1/00 ,  H02J9/06 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J7/0068 ,  H02J7/007 ,  H02J9/062 ,  H02J2009/067

Abstract: An uninterruptible power supply (UPS) and methods of operation are provided. The UPS includes a transformer configured to receive power from a utility. The transformer includes a primary winding, a secondary winding, and a tertiary winding. The UPS also includes a rectifier coupled to the secondary winding and an inverter coupled to an output of the rectifier, wherein a connection between the rectifier and the inverter defines a DC link. The inverter is configured to output a first regulated voltage configured to be provided to a load. The UPS further includes a voltage-boost converter coupled to the tertiary winding and is configured to output a second regulated voltage to be combined with the first regulated voltage.

公开(公告)号：US20170264101A1

公开(公告)日：2017-09-14

申请号：US15066133

申请日：2016-03-10

Applicant: General Electric Company

Inventor： Yashomani Y. Kolhatkar ,  Silvio Colombi ,  Arvind Kumar Tiwari

IPC: H02J3/40 ,  H02P9/00

CPC classification number: H02J3/40 ,  H02J9/066 ,  H02J9/08 ,  H02P9/007 ,  H02P9/04 ,  H02P9/08

Abstract: An uninterruptable power supply (UPS) system for providing power to a load coupled to a utility power source is provided. The UPS system includes a doubly-fed induction generator (DFIG), a rechargeable energy storage system, a first inverter, and a controller in communication with the DFIG and the first inverter. The DFIG includes a stator and a rotor coupled to the load. The stator and rotor are magnetically coupled together. The DFIG generates an auxiliary power output. The first inverter is coupled between the rotor and the rechargeable energy storage system. The controller detects a power disturbance associated with the utility power source and controls the first inverter to provide an excitation input to the rotor in response to the power disturbance. The DFIG provides the auxiliary power output to the load based on the excitation input.

公开(公告)号：US20160013728A1

公开(公告)日：2016-01-14

申请号：US14327171

申请日：2014-07-09

Applicant: General Electric Company

Inventor： Lorenzo Giuntini ,  Silvio Colombi ,  Andrea Mannuccini

IPC: H02M5/458 ,  H02J9/06

Abstract: An uninterruptible power supply (UPS) is provided that includes a split direct current (DC) link having a first capacitor coupled between a positive DC link terminal and a first node, and a second capacitor coupled between the first node and a negative DC link terminal. The UPS also includes a rectifier coupled to an input of the split DC link and a controller coupled to the rectifier. The rectifier includes first, second, and third legs, wherein each leg is configured to convert a first alternating current (AC) voltage received from an AC source into a DC voltage to be provided to the split DC link, and a fourth leg configured to balance DC link voltages of the first and second capacitors. The controller is configured to maintain functionality of the rectifier during at least one of a partial utility power outage, a full utility outage, and a failure of at least one of the first, second, third, and fourth legs.

Abstract translation: 提供了一种不间断电源（UPS），其包括具有耦合在正DC链路端子和第一节点之间的第一电容器的分离直流（DC）链路和耦合在第一节点和负DC链路终端之间的第二电容器 。 UPS还包括耦合到分离DC链路的输入端的整流器和耦合到整流器的控制器。 整流器包括第一，第二和第三支腿，其中每个支腿被配置为将从AC源接收的第一交流电压（AC）电压转换成要提供给分离DC链路的直流电压，以及第四支路，被配置为 平衡第一和第二电容器的直流链路电压。 控制器被配置为在部分公用电力停电，完全停电以及第一，第二，第三和第四支路中的至少一个的故障中的至少一个中保持整流器的功能。

公开(公告)号：US20150263568A1

公开(公告)日：2015-09-17

申请号：US14640409

申请日：2015-03-06

Applicant: General Electric Company

Inventor： Silvio Colombi ,  Andrea Mannuccini ,  Harry Bye Handlin

IPC: H02J9/06

CPC classification number: H02J9/061 ,  H02J3/48 ,  H02J9/062 ,  Y10T307/615 ,  Y10T307/62

Abstract: A system is provided. The system includes a ring bus, at least one voltage source, and a plurality of uninterruptible power supplies (UPSs) electrically coupled between the at least one voltage source and the ring bus, wherein at least one UPS of the plurality of UPSs includes an input, an output, a rectifier having a rectifier input and a rectifier output, an inverter having an inverter input and an inverter output, wherein the rectifier output is electrically coupled to the inverter input, and a bypass switch electrically coupled between the rectifier input and the inverter output, the bypass switch configured to close in response to detection of a fault on the ring bus.

Abstract translation: 提供了一个系统。 该系统包括环形总线，至少一个电压源和电耦合在所述至少一个电压源和环形总线之间的多个不间断电源（UPS），其中所述多个UPS中的至少一个UPS包括输入 输出，具有整流器输入和整流器输出的整流器，具有逆变器输入和反相器输出的逆变器，其中整流器输出电耦合到逆变器输入，以及旁路开关，其电耦合在整流器输入和 逆变器输出，旁路开关配置为关闭，以响应环路总线上的故障检测。