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1.发明公开
公开(公告)号：EP0280382A2
公开(公告)日：1988-08-31
申请号：EP88200372.6
申请日：1988-02-29
Applicant: ABB Power T&D Company Inc.
Inventor： Sweezy, George A.
CPC classification number: H02M1/38 , H02J3/36 , H02M7/7575 , Y02E60/60
Abstract: A control for an inverter operable for converting direct voltage and current to alternating voltage and current. The inverter includes a plurality of electrical valves each operable to conduct current in a single direction upon the application of a positive voltage in the forward direction and the receipt of a trigger pulse. The control provides successive trigger pulses for commutating the current between successive valves at predetermined electrical firing angles and includes a voltage-time area calculating circuit for calculating the maximum permissible firing angle which will permit successful commutation. An inverter commutation failure prevention circuit is coupled to the alternating current network for detecting abnormal voltage conditions and for producting a control signal functionally related to any deviation in the alternating voltage from the expected voltage condition. The control is responsive to the control signal for reducing the electrical angles of the trigger pulses provided to the valves.
Abstract translation: 用于逆变器的控制器，其可操作用于将直流电压和电流转换为交流电压和电流。 逆变器包括多个电气阀，每个电阀可操作以在正向施加正电压并接收触发脉冲时沿单个方向传导电流。 该控制提供连续的触发脉冲，用于以预定的电触发角度在连续的阀之间换向电流，并且包括用于计算将允许成功换向的最大允许触发角的电压 - 时间区域计算电路。 逆变器换向故障防止电路耦合到交流网络，用于检测异常电压状况，并产生与交流电压中的任何偏差与预期电压条件功能相关的控制信号。 控制响应于控制信号以减小提供给阀的触发脉冲的电角度。
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公开(公告)号：EP0280382A3
公开(公告)日：1989-08-23
申请号：EP88200372.6
申请日：1988-02-29
Applicant: ABB Power T&D Company Inc.
Inventor： Sweezy, George A.
CPC classification number: H02M1/38 , H02J3/36 , H02M7/7575 , Y02E60/60
Abstract: A control for an inverter operable for converting direct voltage and current to alternating voltage and current. The inverter includes a plurality of electrical valves each operable to conduct current in a single direction upon the application of a positive voltage in the forward direction and the receipt of a trigger pulse. The control provides successive trigger pulses for commutating the current between successive valves at predetermined electrical firing angles and includes a voltage-time area calculating circuit for calculating the maximum permissible firing angle which will permit successful commutation. An inverter commutation failure prevention circuit is coupled to the alternating current network for detecting abnormal voltage conditions and for producting a control signal functionally related to any deviation in the alternating voltage from the expected voltage condition. The control is responsive to the control signal for reducing the electrical angles of the trigger pulses provided to the valves.
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公开(公告)号：EP0280382B1
公开(公告)日：1993-05-26
申请号：EP88200372.6
申请日：1988-02-29
Applicant: ABB Power T&D Company Inc.
Inventor： Sweezy, George A.
CPC classification number: H02M1/38 , H02J3/36 , H02M7/7575 , Y02E60/60
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