System voltage 3-phase AC output, can change the value of the amplitude and frequency levels depending on the controller. In theory, the frequency and voltage is a certain rule depending on control mode. For constant torque load, the voltage ratio - the frequency is constant. However, with the load pump and fan, this rule is a function of type 4. Voltage as a function of frequency of type 4. This creates torque characteristic is quadratic function of speed in accordance with the requirements of the load pump / fan torque by itself is also a quadratic function of voltage.

Power conversion efficiency of the inverter is very high because of the use of power semiconductor components were built by modern technology. Thus, energy consumption is approximately equal to the energy required by the system.

In addition, today's inverter has integrated so many different drivers suit most types of different loads. Today the inverter is integrated both the PID and suitable for many different communication standards, is suitable for controlling and monitoring of the SCADA system.

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Basic working principle of variable frequency

Basic working principle of the inverter is quite simple. First, power 1pha or 3-phase AC is rectified and filtered into one-dimensional flat source. This stage is done by diode bridge rectifier and capacitors. Thus, the power factor of the system cosphi frequency counts and not depend on the load value at least 0.96. This voltage is converted (reverse flow) of 3-phase AC voltage symmetry. This stage is now done through IGBT (transistor insulated gate bipolar) by means of pulse width modulation (PWM). Thanks to technological advancement of microprocessor and semiconductor technologies current power, switching frequency can be up to pulse frequency range of ultrasound to reduce engine noise and reduce losses in the iron core motors.

System voltage 3-phase AC output, can change the value of the amplitude and frequency levels depending on the controller. In theory, the frequency and voltage is a certain rule depending on control mode. For constant torque load, the voltage ratio - the frequency is constant. However, with the load pump and fan, this rule is a function of type 4. Voltage as a function of frequency of type 4. This creates torque characteristic is quadratic function of speed in accordance with the requirements of the load pump / fan torque by itself is also a quadratic function of voltage.

In addition, today's inverter has integrated so many different drivers suit most types of different loads. Today the inverter is integrated both the PID and suitable for many different communication standards, is suitable for controlling and monitoring of the SCADA system.

SAVE ELECTRICITY

Power conversion efficiency of the inverter is very high because of the use of power semiconductor devices manufactured by modern technology. Therefore, energy consumption is approximately equal to the energy requirements of the system.

Through calculations with real data, with the actual costs with a primary engine of 100 kW, the time for recovery of capital investment is a frequency range from 3 months to 6 months. Currently in Vietnam there were some factories use this inverter and the results were obvious.

With energy saving measures in addition to improving the control system, the inverter is now considered a standard application for transmission to the pump and fan.

Thanks to high-tech features with the most modern control technology (optimal control for energy) is the inverter and will satisfy many investors in the country, in the region and the world.

TYPES OF TRANSPORT TO USE TO SAVE POWER INVERTER

1. Load with soft tissue changes (Central air conditioning, water pumps, fan pumps, ...).

2. Always-load engine running engine that can not be replaced, they must mount the inverter.

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