About GBT of photovoltaic inverter
GB/T 38330-2019 Code of maintenance and overhaul of inverter for photovoltaic power station ICS 27.160 F12 National Standards of People's Republic of China Inverter overhaul and maintenance procedures for photovoltaic power stations 2019-12-10 release 2020-07-01 implementation State Administratio.
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About GBT of photovoltaic inverter video introduction
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6 FAQs about [GBT of photovoltaic inverter]
What is IGBT in solar inverter?
In solar inverter applications, IGBTs (Insulated-Gate Bipolar Transistors) offer benefits compared to other types of power devices, such as high-current-carrying capability, gate control using voltage instead of current, and the ability to match the co-pack diode with the IGBT.
Are insulated-gate bipolar transistors a good choice for solar inverter applications?
For solar inverter applications, it is well known that insulated-gate bipolar transistors (IGBTs) ofer benefits compared to other types of power devices, like high-current-carrying capability, gate control using voltage instead of current and the ability to match the co-pack diode with the IGBT.
What is a solar inverter?
solar inverter is a power-electronic circuit that con-verts dc voltage from a solar array panel to ac voltage that can be used to power ac loads such as home appliances, lighting and power tools. However, getting the most out of such a topology requires careful analysis and the right choice of the high-side and low-side combination of an IGBT.
What is the test method for inverters?
The test method is carried out according to “Test B” in GB/T 2423.2-2008. The product has no packaging. Under test temperature of 40 °C ± 2 °C (indoor type) or 60 °C ± 2 °C Each inverter shall be subject to the ex-factory inspection. If any failure occurs during inspection shall be carried out again.
How can IGBTs be modulated?
One way to achieve this requirement is by pulse-width modulating the IGBTs at or above 20 kHz at a certain modulation frequency of 50 Hz or 60 Hz. By using pulse-width modulation, output inductors L1 and L2 can be kept reasonably small and will suppress the harmonics efectively.
Which IGBT has the lowest power dissipation?
Ultrafast IGBTs switching at 20 kHz provide the lowest power-dissipation levels compared to fast and standard-speed devices. And of the two ultrafast types shown on the right, a trench-gate IGBT dissipates the least amount of power. IGBT, is the device of choice for the high-side IGBTs. The same question arises for the low-side IGBTs.