What Is A Low-voltage Three-phase Hybrid Inverter

A low-voltage three-phase hybrid inverter is an electrical device that converts direct current and three-phase alternating current in both directions, and is widely used in industrial, agricultural, and transport applications, as well as in large-scale renewable energy systems.

Basic concept of low voltage three-phase hybrid inverter

The basic concept of a low-voltage three-phase hybrid inverter can be understood from the following three aspects:

• Low-voltage: The input voltage of a low-voltage three-phase hybrid inverter is generally between 12V and 48V, which can reduce the cost and safety risk of electrical equipment.

Three-phase: The output voltage of three-phase hybrid inverter is three-phase alternating current (AC), usually 380V or 220V, which is suitable for high-power motors, pumps, fans and other equipment.

Hybrid: Hybrid inverters can not only convert DC to three-phase AC, but also convert three-phase AC to DC for two-way power flow. In this way, hybrid inverters can be combined with renewable energy sources such as solar and wind to achieve optimal use of energy.

The working principle of low voltage three-phase hybrid inverter

The working principle of low-voltage three-phase hybrid inverter can be divided into the following two modes:

• Inverter mode: when the input power is DC, the low-voltage three-phase hybrid inverter converts the DC power to three-phase AC power through switching tubes and transformers, and outputs it to the loads or the power grid.

• AC mode: When the input power is three-phase AC, the low-voltage three-phase hybrid inverter converts the three-phase AC to DC through rectifier bridge and filter capacitor, and outputs it to the battery or DC load.

The low-voltage three-phase hybrid inverter can automatically switch between inverter mode and converter mode according to the type of input power and the demand of the load, so as to realise the bidirectional conversion and balancing of electric energy.

Advantages of LV three-phase hybrid inverter

Low-voltage three-phase hybrid inverters have several advantages over traditional one-way inverters:

• Adaptation to multiple energy sources: Low-voltage three-phase hybrid inverters can receive inputs from a variety of DC power sources such as solar panels, batteries, generators, etc., as well as inputs from a variety of three-phase AC power sources such as the power grid and diesel generators. In this way, the low-voltage three-phase hybrid inverter can automatically switch its working mode according to different energy conditions to ensure a stable supply of power.

• Improved energy efficiency: The conversion efficiency of low-voltage three-phase hybrid inverters is generally above 90%, which saves a lot of energy loss compared to traditional unidirectional inverters. At the same time, low-voltage three-phase hybrid inverters can also realise intelligent control, automatically adjusting the output voltage and frequency according to the demand of the load, further improving energy efficiency.

• Reduced cost: The cost of a low-voltage three-phase hybrid inverter is much lower compared to a high-voltage three-phase hybrid inverter. This is because the circuit design of a low-voltage three-phase hybrid inverter is simpler, requires fewer components, and allows for the use of cheaper materials. In addition, low-voltage three-phase hybrid inverters are easier to install and maintain, which saves manpower and material resources.

Application Scenarios of Low Voltage Three-Phase Hybrid Inverter

The application scenarios of low-voltage three-phase hybrid inverters are very wide, mainly including the following aspects:

• Industrial power system: low voltage three-phase hybrid inverter can be used as the core component of industrial power system to provide stable three-phase AC power for various high-power motors, pumps, fans and other equipments. For example, low-voltage three-phase hybrid inverters can provide precise power control for equipment such as CNC machine tools, robots, welding machines, etc. to improve production efficiency and quality.

• Agricultural power systems: Low-voltage three-phase hybrid inverters can be used as an important part of agricultural power systems to provide reliable power for agricultural production and management. For example, low voltage three-phase hybrid inverters can provide suitable power for irrigation, drainage, fertiliser, spraying and other equipment to improve the level and efficiency of agricultural production.

• Traffic power system: Low-voltage three-phase hybrid inverters can be used as a key component of traffic power systems to provide safe power for transport and management. For example, LV three-phase hybrid inverters can provide stable traction power for high-speed rail, underground, light rail and other equipment to improve the speed and safety of transport.

• Renewable energy systems: Low-voltage three-phase hybrid inverters can be combined with renewable energy systems, such as solar and wind power, to achieve the optimal use of energy. For example, low-voltage three-phase hybrid inverters can provide efficient power conversion for large-scale solar power stations, wind power stations and other equipment, improving the utilisation rate and economy of renewable energy.

To sum up, the low-voltage three-phase hybrid inverter is a kind of electrical equipment with many advantages, which can adapt to a variety of energy sources, improve energy efficiency, and reduce costs, and is a new type of inverter worth promoting.

ADAYO Low-voltage three-phase hybrid inverters EA08P3L/EA10P3L/EA12P3L is a sophisticated device that not only converts direct current (DC) from PV modules into alternating current (AC) for household use but also charges solar batteries and stores excess energy.  ADAYO Goethe-Three Phase inverters are particularly beneficial for running large appliances and are integral to modern solar systems.

ADAYO Low-voltage three-phase hybrid inverters is designed to distribute electricity evenly across three live wires, which effectively minimizes voltage drop issues that are common with single-phase power supplies. There are three size of this inverter: 8kw, 10kw and 12kw. This type of inverter is particularly suitable for systems that exceed a 5kW capacity, catering to environments where the electrical demand is higher.  This Low-voltage three-phase hybrid inverters are ideal for larger homes, residential complexes, and commercial buildings that require a robust power solution.

Key Features of Low-voltage three-phase hybrid inverters EA08P3L/EA10P3L/EA12P3L:

• 100% 3 phase imbalance output: It can output one phase with full power and the others with no power

• 48v battery voltage: The battery voltage is 48v, it has good battery compatibility

• Excess input pv power: The input PV power is 2 times of rated AC output power

• Smart phase-level power output limitation: Intelligently adjust the output power of each pahse according to the power demand

• Complete protection : Hardware and software dual protection, Anti-islanding, short, overcurrent, overvoltage,overtemperature etc.