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Safety mechanisms, wake up and shutdown methods in distributed power installations

專利號(hào)
US11888387B2
公開日期
2024-01-30
申請(qǐng)人
Solaredge Technologies, Ltd（IL Herzeliya）
發(fā)明人
Meir Adest; Guy Sella; Lior Handelsman; Yoav Galin; Amir Fishelov; Meir Gazit; Yaron Binder
IPC分類
H02J1/00; H02M1/32; H02M3/158; G01S3/786; H01L31/02; H02H3/20; H02J1/10; H02J3/46; H02M7/493; H04B3/54; H02J3/38; H02J7/35; H02M1/00
技術(shù)領(lǐng)域
inverter,power,string,voltage,islanding,grid,converter,in,signal,output
地域： Herzliya Pituah

摘要

A distributed power system including multiple DC power sources and multiple power modules. The power modules include inputs coupled respectively to the DC power sources and outputs coupled in series to form a serial string. An inverter is coupled to the serial string. The inverter converts power input from the serial string to output power. A signaling mechanism between the inverter and the power module is adapted for controlling operation of the power modules. Also, for a protection method in the distributed power system, when the inverter stops production of the output power, each of the power modules is shut down and thereby the power input to the inverter is ceased.

說明書

Reference is now also made to FIG. 9A which illustrates converter 905 in more detail. The 100/120 Hz leakage is constantly monitored and detected by a receiver 907. Only while receiver 907 senses the leakage from the grid does receiver 907 provide an enable signal to controller 306. When controller 306 doesn't receive an enabling signal from receiver 907, controller 306 shuts down power conversion of converters 905.

Alternatively or in addition, one or more switching frequencies of inverter 104, typically 16 Khz or 32 KHz. may be detected as leakage or provided intentionally to serial string 923 along lines 412,410. Receiver 907 is configured to detect the 16/32 KHz inverter switching frequency and provides an enabling signal to controller while inverter 104 is operating.

權(quán)利要求

1
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