inverter in Afghanistan

Product description

Fixed power: 7000watts

Peak power :21000watts

Battery voltgage :48V DC 

Ac output volt:110/120/220/230V AC (optional )

Output Frequency :50Hz/60Hz (optional )

Efficiency:92%

Wave form : Pure sine wave form 

Low frequency inverter advantage:

The power frequency machine is designed based on the traditional analog circuit principle. It consists of a thyristor (SCR) rectifier, an IGBT inverter, a bypass, and a power frequency boost isolation transformer. Because its rectifier and transformer work at a frequency of 50Hz, it is called a power frequency inverter.

High frequency machine is usually composed of IGBT high frequency rectifier, battery converter, inverter and bypass. IGBT can be controlled to turn on and off by controlling the drive added to the gate. The switching frequency of IGBT rectifier is usually from several kilohertz to dozens of kilohertz, even up to hundreds of kilohertz, which is much higher than that of industrial frequency machine. It is a high-frequency inverter.

In the power frequency inverter circuit, the three-phase AC input of the main circuit passes the commutation inductor, and is converted into a DC voltage after being connected to a rectifier composed of three SCR bridge arms. The output DC voltage is adjusted by controlling the conduction angle of the SCR of the rectifier bridge. value. Because SCR is a semi-control device, the control system can only control the turn-on point. Once the SCR is turned on, even if the gate drive is cancelled, it cannot be turned off. Only after its current is zero can it be turned off naturally, so it is turned on and off. Both are based on a power frequency cycle, and there is no high frequency on and off control. Since the SCR rectifier is a step-down rectifier, the AC voltage of the DC bus voltage output through the inverter is lower than the input AC voltage. To make the output phase voltage obtain a constant 220V voltage, a boost isolation transformer must be added to the inverter output.

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