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- เผยแพร่เมื่อ 20 ก.ย. 2024
- If you want to install a high frequency inverter for your home with solar panels, click here to learn why some high frequency inverters are not legal to install. "6000xp is not UL9540 certified. YOU CANNOT LEGALLY install in the US along with solar panels." • 6000xp is not UL9540 c...
For a more detailed explanation regarding the use of high frequency inverters for charging an EV, please watch Solar Inverter Catastrophic Failure:
• Solar Inverter Catastr...
The high frequency technology that's used in all larger high frequency inverters is basically the same tech that's used in the Ecoflow portable power stations. Click here to learn how you can damage sensitive electronics when powering high inductance loads like power tools with any high frequency, transformerless inverter. • I ticked off a sponsor
Off grid, low frequency inverter chargers, also known as heavy duty inverters offer a far longer life expectancy than light duty, high frequency inverters. Off grid, low frequency inverters also offer a much high peak power capacity than high frequency inverters. Low frequency inverters are also far safer than high frequency inverters because inherently, block dangerous high voltage, high DC current from ever reaching your AC appliances or your EV through the use of a heavy duty, iron core, copper wound output transformer. Low frequency inverters do cost a bit than more than high frequency inverter, but the added cost is well worth the price when it comes to safety, reliability and longevity.
An iron core, copper wound output transformer acts as a buffer that absorbs electrical surges when starting and stopping high inductance loads like refrigerators, AC units, large power tools, microwave ovens and motors. This buffering of inductive loads is provided by the “Flywheel Effect” inherent in the physical amount of a transformer’s iron core. Without an iron core output transformer, high frequency inverters rely solely on their MOSFET transistors to power these inductive loads without any buffer.. This directly exposes the MOSFETs to these power surges with shortens their life and and results in a much lower peak power rating. High frequency, transformerless inverters are far cheaper to manufacture and they cost less to ship due to the weight reduction from the lack of an output transformer.
Even today, after more than 25 years of product development, You'd be lucky to get even two to three years of service from a Chinese made high frequency off grid inverter, especially when powering high inductance loads like full sized refrigerators, large power tools, portable AC units or large microwave ovens. The reason for this is that all of these lightweight, high frequency inverters lack a very critical component. That critical component is an iron core, copper wound output transformer. Without an output transformer to act as a buffer to absorb the electrical surges provided by the “Flywheel Effect” inherent in the physical amount of a transformer’s iron, these surges and damaging reverse voltage spikes must be handled directly by the inverter’s MOSFET transistors, essentially shortening their life.
You might be able to start and run some high surge loads when these high frequency off grid inverters are new, but every time you fire up one of those inductive loads, you're shortening the life of the MOSFETs in these inverters. To make things even worse, lightweight, high frequency inverters run much hotter and their internal components are far more stressed due to their high switching speeds and use of high voltage components, These two factors makes the low cost, off spec, Chinese made components such as capacitors, MOSFETs, diodes, resistors and ICs that are used in these off grid inverters, far more prone to early failure. Simply put, high frequency inverters are better suited for like duty, electronic devices, and low frequency inverter are better suited for heavy duty, high peak power appliances.
