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1. 发明申请

US20130222951A1 FAULT PROTECTION CIRCUIT FOR PHOTOVOLTAIC POWER SYSTEM 审中-公开
标题翻译：光伏电力系统故障保护电路
公开(公告)号：US20130222951A1
公开(公告)日：2013-08-29
申请号：US13406944
申请日：2012-02-28
申请人： Huibin Zhu , David Smith , Anthony William Galbraith , David Scott Wilmer
发明人： Huibin Zhu , David Smith , Anthony William Galbraith , David Scott Wilmer
IPC分类号： H02H9/00
CPC分类号： H02H3/16 , B60L3/04 , H02H3/08 , H02H7/122 , H02H9/04
摘要： A fault protection scheme for a photovoltaic power converter system is provided. According to aspects of the present disclosure, a fault protection circuit is coupled between a power converter and a ground reference. The fault protection circuit includes a fuse and a current sensor coupled in series with the fuse. A controller is configured to receive current readings from the current sensor and compare the current readings to a current threshold. The current threshold is selected to be less than the fuse current rating of the fuse. The controller identifies a fault condition if the current flowing through the ground protection circuit exceeds the current threshold value. A contactor can also be provided to temporarily lift the power converter relative to the ground reference to determine the existence of other fault paths in the system.
摘要翻译：提供了一种用于光伏功率转换器系统的故障保护方案。根据本公开的方面，故障保护电路耦合在功率转换器和接地参考之间。故障保护电路包括与保险丝串联耦合的保险丝和电流传感器。控制器被配置为从当前传感器接收电流读数并将当前读数与当前阈值进行比较。选择电流阈值小于保险丝的额定熔断器电流。如果流过接地保护电路的电流超过当前阈值，则控制器识别出故障状态。还可以提供接触器以临时提升功率转换器相对于接地参考以确定系统中其它故障路径的存在。

2. 发明申请

US20130258732A1 SYSTEM AND METHOD FOR REDUCING REACTIVE CURRENT IN POWER CONVERTER BURN-IN TESTS 审中-公开
标题翻译：用于降低功率转换器灼热测试中的反应电流的系统和方法
公开(公告)号：US20130258732A1
公开(公告)日：2013-10-03
申请号：US13430826
申请日：2012-03-27
申请人： Huibin Zhu , David Smith , David Scott Wilmer
发明人： Huibin Zhu , David Smith , David Scott Wilmer
IPC分类号： H02M7/44
CPC分类号： G01R31/42 , H02S50/10
摘要： A system and method for reducing reactive current in burn-in test systems for solar power converters is disclosed. An emulator configured to simulate a DC power source and the power converter subject to the burn-in test can be coupled in a two-unit circulating configuration. An AC feeder line configured to supply power to the two-unit circulating configuration. A controller can be configured to adjust the output of one or more of the emulator and power converter to reduce reactive current flowing in the AC feeder line. For instance, the controller can adjust the modulation of switching devices used in the power converter or emulator to adjust the power factor of various components of the burn-in test system to compensate for the reactive current in the AC feeder line.
摘要翻译：公开了一种降低太阳能转换器的老化测试系统中无功电流的系统和方法。配置成模拟DC电源的仿真器和经过老化测试的功率转换器可以以两单元循环配置耦合。 AC供电线路，配置为向两单元循环配置供电。控制器可以被配置为调整一个或多个仿真器和功率转换器的输出，以减少在AC馈线中流动的无功电流。例如，控制器可以调整在功率转换器或仿真器中使用的开关器件的调制，以调整老化测试系统的各个部件的功率因数，以补偿交流馈线中的无功电流。

3. 发明申请

US20150103573A1 POWER CONVERTER SYSTEM, DAMPING SYSTEM, AND METHOD OF OPERATING A POWER CONVERTER SYSTEM 有权
标题翻译：电力转换器系统，阻尼系统和操作电力转换器系统的方法
公开(公告)号：US20150103573A1
公开(公告)日：2015-04-16
申请号：US14396917
申请日：2012-04-26
申请人： Huibin Zhu , David Smith , David Scott Wilmer , Maozhong Gong , Jun Zhu , Xueqin Wu
发明人： Huibin Zhu , David Smith , David Scott Wilmer , Maozhong Gong , Jun Zhu , Xueqin Wu
IPC分类号： H02M7/537
CPC分类号： H02M7/537 , H02M1/32 , H02M1/36 , H02M5/4585 , H02M2001/322
摘要： A power converter system includes a converter configured to be coupled to a power generation unit for receiving current from the power generation unit. A bus is coupled to the converter, and energy is stored within the bus when the current is conducted through the power converter system. A damping circuit is configured to be coupled to the bus and to the power generation unit, and a control system is coupled to the converter and to the damping circuit. The control system is configured to selectively discharge at least a portion of the energy stored within the bus through the damping circuit when the control system determines that a predetermined condition is met.
摘要翻译：电力转换器系统包括被配置为耦合到用于从发电单元接收电流的发电单元的转换器。总线耦合到转换器，并且当电流通过功率转换器系统传导时，能量被存储在总线内。阻尼电路被配置为耦合到总线和发电单元，并且控制系统耦合到转换器和阻尼电路。控制系统配置成当控制系统确定满足预定条件时，通过阻尼电路选择性地排放存储在总线内的能量的至少一部分。

4. 发明授权

US09509231B2 Power converter system, damping system, and method of operating a power converter system 有权
标题翻译：电力转换器系统，阻尼系统和操作电力转换器系统的方法
公开(公告)号：US09509231B2
公开(公告)日：2016-11-29
申请号：US14396917
申请日：2012-04-26
申请人： Huibin Zhu , David Smith , David Scott Wilmer , Maozhong Gong , Jun Zhu , Xueqin Wu
发明人： Huibin Zhu , David Smith , David Scott Wilmer , Maozhong Gong , Jun Zhu , Xueqin Wu
IPC分类号： H02M7/537 , H02M1/36 , H02M5/458 , H02M1/32
CPC分类号： H02M7/537 , H02M1/32 , H02M1/36 , H02M5/4585 , H02M2001/322
摘要： A power converter system includes a converter configured to be coupled to a power generation unit for receiving current from the power generation unit. A bus is coupled to the converter, and energy is stored within the bus when the current is conducted through the power converter system. A damping circuit is configured to be coupled to the bus and to the power generation unit, and a control system is coupled to the converter and to the damping circuit. The control system is configured to selectively discharge at least a portion of the energy stored within the bus through the damping circuit when the control system determines that a predetermined condition is met.
摘要翻译：电力转换器系统包括被配置为耦合到用于从发电单元接收电流的发电单元的转换器。总线耦合到转换器，并且当电流通过功率转换器系统传导时，能量被存储在总线内。阻尼电路被配置为耦合到总线和发电单元，并且控制系统耦合到转换器和阻尼电路。控制系统配置成当控制系统确定满足预定条件时，通过阻尼电路选择性地排放存储在总线内的能量的至少一部分。

5. 发明申请

US20130119763A1 PRECHARGING AND CLAMPING SYSTEM FOR AN ELECTRIC POWER SYSTEM AND METHOD OF OPERATING THE SAME 审中-公开
标题翻译：一种用于电力系统的预调和钳位系统及其操作方法
公开(公告)号：US20130119763A1
公开(公告)日：2013-05-16
申请号：US13295591
申请日：2011-11-14
申请人： Huibin Zhu , David Smith , David Scott Wilmer
发明人： Huibin Zhu , David Smith , David Scott Wilmer
IPC分类号： H02J1/00 , H02M7/537
CPC分类号： H02M1/36 , H02M7/00 , Y10T307/50
摘要： A power converter includes a plurality of direct current (DC) conduits and a precharging and clamping circuit coupled to the DC conduits. The precharging and clamping circuit includes at least one diode, at least one switching device coupled in parallel with the diode, and at least one contactor device coupled to an alternating current (AC) source and the diode. The at least one contactor device is configured to facilitate alternating said precharging and clamping circuit between precharging operation and voltage clamping operation.
摘要翻译：功率转换器包括多个直流（DC）导管和耦合到DC导管的预充电和钳位电路。预充电和钳位电路包括至少一个二极管，与二极管并联耦合的至少一个开关器件，以及耦合到交流（AC）源极和二极管的至少一个接触器器件。所述至少一个接触器装置构造成便于在预充电操作和电压钳位操作之间交替所述预充电和钳位电路。

6. 发明申请

US20130279228A1 SYSTEM AND METHOD FOR IMPROVING LOW-LOAD EFFICIENCY OF HIGH POWER CONVERTERS 审中-公开
标题翻译：改进高功率转换器低负载效率的系统和方法
公开(公告)号：US20130279228A1
公开(公告)日：2013-10-24
申请号：US13453257
申请日：2012-04-23
申请人： Huibin Zhu , Robert Gregory Wagoner , David Scott Wilmer
发明人： Huibin Zhu , Robert Gregory Wagoner , David Scott Wilmer
IPC分类号： H02M7/5387
CPC分类号： H02M3/1584 , H02M1/088 , H02M7/493 , H02M2001/0032 , H02M2001/0054 , Y02B70/1491 , Y02B70/16 , Y02E10/56 , Y02E10/76
摘要： Systems and methods for improving low-load efficiency of power converters are provided. The power converter can include one or more bridge circuits having multiple switching modules, such as insulated gate bipolar transistor (IGBT) modules, connected in parallel within the same bridge circuit. The power converter is configured to convert power from an input power source, such as a photovoltaic array or a wind turbine, into output power at a grid frequency. To avoid excessive switching losses at low load conditions, the power converter can be controlled to selectively operate a subset of the switching modules within the same bridge circuit based on a load condition for the power converter. The remaining switching modules in the bridge circuit can be disabled.
摘要翻译：提供了改善功率转换器的低负载效率的系统和方法。功率转换器可以包括具有多个开关模块的一个或多个桥接电路，例如在同一桥接电路内并联连接的绝缘栅双极晶体管（IGBT）模块。功率转换器被配置为将来自诸如光伏阵列或风力涡轮机的输入电源的功率转换成电网频率的输出功率。为了在低负载条件下避免过大的开关损耗，可以基于功率转换器的负载条件来控制功率转换器以选择性地操作同一桥接电路内的开关模块的子集。桥接电路中的其余开关模块可以被禁用。

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