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1. 发明授权

US08780594B2 Parallel inverter drive system and the apparatus and method for suppressing circulating current in such system 有权
标题翻译：并联逆变器驱动系统及其系统中抑制循环电流的装置及方法
公开(公告)号：US08780594B2
公开(公告)日：2014-07-15
申请号：US13480880
申请日：2012-05-25
申请人： Chien-Yu Chi , Lon-Jay Cheng
发明人： Chien-Yu Chi , Lon-Jay Cheng
IPC分类号： H02M7/48 , H02P27/08 , H02P6/00
CPC分类号： H02P6/002 , H02P6/28 , H02P27/08
摘要： Proposed is a parallel inverter drive system including includes a plurality of inverter drives connected in parallel with each other, in which each inverter drive includes a switch; a PWM controller connected to the switch for controlling switching operations of the switch device according to a duty cycle signal; and a circulating current suppressor for collecting current information associated with the current of each inverter drive and a summation current, and generating an index according to the collected current information and the desired circulating current quantity. A zero-sequence voltage is generated for each phase of a three-phase voltage command according to the index and the voltage command and the operating mode of the inverter drive, thereby injecting the zero-sequence voltage into the voltage command with a feed-forward configuration so as to fix the voltage command. The PWM controller can generate the duty cycle signal according to the fixed voltage command.
摘要翻译：提出了一种并联逆变器驱动系统，其包括彼此并联连接的多个逆变器驱动器，其中每个逆变器驱动器包括开关; 连接到开关的PWM控制器，用于根据占空比信号控制开关装置的开关操作; 以及循环电流抑制器，用于收集与每个逆变器驱动的电流相关联的电流信息和求和电流，并且根据所收集的电流信息和期望的循环电流量生成索引。根据指标和电压指令以及逆变器驱动器的工作模式，为三相电压指令的各相产生零序电压，从而将零序电压注入到具有前馈的电压指令配置，以便修复电压指令。 PWM控制器可根据固定电压指令生成占空比信号。

2. 发明申请

US20130063063A1 PARALLEL INVERTER DRIVE SYSTEM AND THE APPARATUS AND METHOD FOR SUPPRESSING CIRCULATING CURRENT IN SUCH SYSTEM 有权
标题翻译：并联逆变器驱动系统以及用于抑制这种系统中的循环电流的装置和方法
公开(公告)号：US20130063063A1
公开(公告)日：2013-03-14
申请号：US13480880
申请日：2012-05-25
申请人： Chien-Yu Chi , Lon-Jay Cheng
发明人： Chien-Yu Chi , Lon-Jay Cheng
IPC分类号： H02P6/14
CPC分类号： H02P6/002 , H02P6/28 , H02P27/08
摘要： Proposed is a parallel inverter drive system including includes a plurality of inverter drives connected in parallel with each other, in which each inverter drive includes a switch; a PWM controller connected to the switch for controlling switching operations of the switch device according to a duty cycle signal; and a circulating current suppressor for collecting current information associated with the current of each inverter drive and a summation current, and generating an index according to the collected current information and the desired circulating current quantity. A zero-sequence voltage is generated for each phase of a three-phase voltage command according to the index and the voltage command and the operating mode of the inverter drive, thereby injecting the zero-sequence voltage into the voltage command with a feed-forward configuration so as to fix the voltage command. The PWM controller can generate the duty cycle signal according to the fixed voltage command.
摘要翻译：提出了一种并联逆变器驱动系统，其包括彼此并联连接的多个逆变器驱动器，其中每个逆变器驱动器包括开关; 连接到开关的PWM控制器，用于根据占空比信号控制开关装置的开关操作; 以及循环电流抑制器，用于收集与每个逆变器驱动的电流相关联的电流信息和求和电流，并且根据所收集的电流信息和期望的循环电流量生成索引。根据指标和电压指令以及逆变器驱动器的工作模式，为三相电压指令的各相产生零序电压，从而将零序电压注入到具有前馈的电压指令配置，以便修复电压指令。 PWM控制器可根据固定电压指令生成占空比信号。

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