Transformer Isolated Inverter

Transformer Isolated Inverter is a device that uses a transformer to achieve electrical isolation during the power electronic conversion process. Here are its introductions and benefits:
introduce
Working principle: A transformer isolation inverter usually contains a DC input part, a transformer part and an AC output part. After the DC power supply is input, the DC voltage is converted to high-frequency AC voltage through the inverter circuit, then the voltage conversion and electrical isolation are carried out through the isolation transformer, and finally the high-frequency AC voltage is converted into the required low-frequency AC voltage output through the rectification or inverter circuit. For example, in a photovoltaic system, the direct current generated by solar panels is converted into alternating current at the same frequency and phase as the grid through a transformer-isolated inverter and then fed into the grid.
Topology: According to the working frequency and structure of the transformer, it can be divided into power frequency isolated inverter and high-frequency isolated inverter. The power frequency isolated inverter uses a 50Hz or 60Hz power frequency transformer, which is relatively simple in structure and consists of a rectifier bridge, a filter and a power frequency transformer. The high-frequency isolated inverter uses a high-frequency transformer to achieve energy conversion and isolation through a high-frequency switching circuit, which is relatively small in size and weight, and is often used in micro-inverters and other occasions.
merit
High electrical isolation safety: The transformer isolation inverter can electrically isolate the DC input from the AC output, effectively prevent DC from being injected into the AC power grid, avoid damage to the transformer, meter and other equipment in the power grid, and also protect the safety of operators and meet the requirements of relevant safety standards.
Strong ability to suppress harmonics: The isolation transformer can suppress the harmonics output by the inverter to a certain extent, so that the output AC voltage waveform is closer to the sine wave and improve the power quality. For example, some multi-level transformer isolation inverters can effectively reduce the harmonic content in the output voltage through special winding connections and control strategies.
Adapt to different voltage levels: By changing the winding turns ratio of the transformer, the conversion of different voltage levels can be easily realized to meet the needs of different loads and power grids. Whether it is a low-voltage and low-power application or a high-voltage and high-power application, transformer isolation inverters can adapt to voltage requirements through the rational design of the transformer.
Reduce electromagnetic interference: The isolation transformer can play a certain role in electromagnetic shielding, reduce the electromagnetic interference of the internal circuit of the inverter to external equipment, and also reduce the impact of external electromagnetic interference on the inverter itself, and improve the stability and reliability of the system.
Support soft switching technology: Some transformer isolated inverters can be combined with soft switching technology, such as zero voltage switching (ZVS), zero current switching (ZCS), etc., so that the switching device can reduce switching losses and improve the efficiency and power density of the inverter during the turn-on and shutdown process.

Split Phase Hybrid Inverter is an advanced, high-performance energy solution designed for North American residential solar systems. With support for 120/240V split-phase, 208V (2/3 phase), and 230V single-phase output, this hybrid inverter provides outstanding compatibility and versatility. Featuring four MPPT trackers, up to 210A charge/discharge capacity, and a wide battery voltage range (40–58V), it ensures reliable power delivery and efficient energy storage. The Split Phase Hybrid Inverter also includes Wi-Fi monitoring, CAN/RS485 communication, and seamless EPS backup with <20ms switching—making it ideal for grid-tied, off-grid, and backup applications. Built to last with transformer isolation and IP65 protection, it comes with a standard 10-year warranty.

Product Features

1. Support Wi-Fi for mobile monitoring.
2. 48V low voltage battery, transformer isolation topology.

3. Max. charging/discharging current of 100A.
4. DC couple and AC couple to retrofitexisting solar system
5. Power supply can be switched automatically.
6. Long warranty period：5 years.
7. Convenient RS232/RS485 Communication.
8. IP65 Protection level.
9.Multiple operating modes, on-grid,off- grid and UPS,MPPT charger built in.