Ivy Metering Co., Ltd.
The current sensor is installed on the external line output interface of the inverter, so as to detect the current of the solar inverter output ground electrode. Parasitic capacitance is found in
1. DC Current Detecting On the DC side of PV inverter, current detection is required for 1.MPPT control to maximize power generation efficiency and 2. overcurrent detection caused by short circuit.
AC Current Detecting On the AC side of the PV inverter, it is required to generate AC current that eliminates offset current (DC components) as much as possible in order to connect to a commercial power supply and sell electric power.
Standard and detection of leakage current According to the 7.10.2 regulation of NB32004-2013 standard, in any case where the solar inverter is connected to the AC grid and the AC breaker is turned off, the inverter should provide leak current detection.
And it has an extremely high precision requirement, a special current sensor is required. The photovoltaic standard stipulates that for the detection of photovoltaic leakage current, Type B, that is, a current sensor capable of measuring both AC and DC leakage currents, must be used.
The current sensor is installed on the external line output interface of the inverter, so as to detect the current of the solar inverter output ground electrode. Parasitic capacitance is found in
Voltage and current detection-based harmonic current compensation (VDB-HCC and CDB-HCC, respectively) strategies allow the use of photovoltaic (PV) inverters to enhance the grid
Figure 1. Current sensors are needed throughout grid-tied systems for control of the converters and inverters, optimization of power extraction from solar panels, and fault detection for safety. PV
The photovoltaic standard stipulates that for the detection of photovoltaic leakage current, Type B, that is, a current sensor capable of measuring both AC and DC leakage currents, must be
-Residual current detection- Leakage current measurement in PV inverters-Leakage current detection in photovoltaic inverters-First human contact protection of PV arrays-Communication power.-
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Arc current detection is needed to collect and analyze the AC noise current present on the DC current between the PV string and inverter, then distinguish an arc and non-arc event.
On the DC side of PV inverter, current detection is required for 1.MPPT control to maximize power generation efficiency and 2. overcurrent detection caused by short circuit. For improvement of
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