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首页> 美国政府科技报告 >Requirements for a Transformerless Power Conditioning System.
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Requirements for a Transformerless Power Conditioning System.

机译：无变压器功率调节系统的要求。

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Requirements for development of a Transformerless Power Conditioning Subsystem (TPCS) that will meet utility, manufacturer, and customer needs are detailed in this report. Issues analyzed include utility guidelines, safety and grounding issues that appear as local codes, various kinds of TPCS connections that can be developed, dc injection, and a brief survey of TPCS circuit topologies that will meet requirements. The major result of this study is that a finite time exists for control operation before dc injection into the distribution transformer causes customer outage (on the order of seconds). This time permits the control system to sense a dc injection condition and remove the TPCS from the utility system. Requirements for such a control system are specified. The study also showed that a three-wire connection will ensure balanced operation for customer loads and that two-wire connections caused average value dc to be injected into single-phase loads. This type of connection also allows for the lowest array voltage. The conclusion from the study is that requirements for a TPCS can be determined and that there are no showstopping issues preventing implementation. The actual design and topology of the TPCS have been left for further study. (ERA citation 09:039983)

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