NOVOSENSE isolation chip is based on the volume isolation technology route. Long development in isolation chip technology with four characteristic isolation productsĪn inverter needs about 25 isolation chips on average, which are mainly used in the low-voltage and high-voltage parts of PV inverters to meet the requirements of system safety and safety regulations. Isolation ICs include driver, sampling, digital isolator and isolation interface Other analog ICs include operational amplifier, power supplies (flyback /DC-DC/LDO), buffers, etc.ġ. NOVOSENSE solutions for PV inverters mainly include isolation ICs and other analog ICs.
#Optical isolator circuit driver
In the PV inverter, a large number of analog chips will be used in the driver circuit of power semiconductor, the sampling circuit of bus voltage/current/temperature detection, the over-current protection circuit, the communication circuit inside and outside the system, as well as the power supply and MCU power monitoring circuit. With the development of PV core devices towards high efficiency, low energy consumption and low cost, analog technology and chips are playing an increasingly important role in optimizing and improving the intelligent level of PV power generation technology.
#Optical isolator circuit series
However, with the continuous development of PV technology, micro inverters can now achieve 3000 or even 5000 watts of power with the reduction of IC cost, micro inverters can replace low-power series inverters, and eliminate the potential safety hazards of high-voltage series inverters.
Centralized inverter is a large-scale and super-power PV inverter, mainly used in large industrial and commercial power generation systems Series inverter is the most commonly used inverter for domestic and commercial solar energy systems, featuring low cost, flexible design and high efficiency. For example, soilless planting plants, agricultural science and technology greenhouses, abandoned mining areas, and water treatment municipal facilities are used to realize comprehensive applications, effectively reducing carbon emissions in the realization of industrialization and land efficient output.Īt present, PV system is mainly divided into centralized inverter, series inverter and micro inverter. In order to continuously improve the comprehensive income of power stations, PV power stations tend to be integrated with the primary industry. With the large-scale expansion of PV power stations, land resources for the construction of high-quality power stations are scarce. PV, as an important renewable energy generation technology, is developing rapidly, becoming a clean, low-carbon and price competitive form of energy. Thanks for all the suggestions, I'll continue monitoring this thread as much as possible (min is 1/day, but prob more).In recent years, renewable energy has become the leading direction and concerted action of the global energy revolution and the response to climate change. My main concerns are reliability and simplicity.ĬapBlack: thanks, I'll be taking a look into the chip you suggested.īorber: could you provide a link to an example of what you're suggesting? sounds like a good idea.įrank: I hope I provided some insight as to what you were looking for. There aren't a lot of power, responsitivity, or form factor requirements.
So the idea is to optically isolate the measurement from the signal line to prevent error injection. The problem is that when the daq takes it's measurement, there is some capacitive buildup in it's measurement lines that is injecting error into the circuit. To help monitor state as a backup, there is a daq measuring the input lines and reporting back to a pc.
The voltage will be between 1 & ~7 V and any changes are generally very slow since the pressure usually goes up and down fairly gradually. If it helps, the setup is a pressure transducer and the circuit is checking if the output voltage goes above a certain threshold.
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