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Compact variable frequency drive - FRENIC-MINI - C2
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In the industrial automation sector, the variable frequency drive (VFD) is an essential device comprising a power electronic board (such as IGBT, MOSFET) and a high-speed central control unit (such as microprocessor, DSP).This device is used to drive and manage a single-phase or three-phase electric motor, modulating the frequency and voltage of its electrical power supply to adjust its speed and torque. The process begins with the conversion of the voltage of ac power supplyfrom alternating current (AC) to direct current (DC) using a rectifier.The direct current is then modulated into a synthetic alternating current waveform by a VFD drive, enabling the motor's speed braking torque to be increased or decreased, offering precise control and more efficient operation.
Nowadays, thanks to software and interface options, the VFD drive has become a high-performance product that enables the user to control motors according full speed upto the desired requirements.
Fuji Electric has used its expertise, experience and know-how to offer you a selection of the best variable frequency drives on the market, from entry-level to high-end, for your standard or advanced application.
ALTHOUGH THE TERMS ARE OFTEN USED INTERCHANGEABLY, IT'S CRUCIAL TO UNDERSTAND THE DIFFERENCE BETWEEN THESE TWO DEVICES.
VFDs are also known as variable speed drives, variable frequency drives, AC drives or DC drives (according to the type rated voltage of current), microinverters, adjustable speed drive, adjustable frequency drive and high frequency inverters.
VARIABLE SPEED AND FREQUENCY DRIVES ARE USED IN A MULTITUDE OF FIELDS, OFFERING PRECISE CONTROL AND ENERGY SAVINGS.
These drives play a crucial role in improving energy cost savings and optimizing productivity in these diverse industrial and commercial applications.
THE USE OF VARIABLE SPEED DRIVES OFFERS MANY ADVANTAGES:
A CLEAR UNDERSTANDING OF VARIABLE SPEED DRIVE APPLICATIONS REQUIREMENTS AND MOTOR CHARACTERISTICS:
These variable speed drives are more than essential in modern plants, enabling efficient energy management, precise torque and speed control, and contributing to the overall efficiency of motorized systems.A VFD installation into your system opesn the door to more efficient operation, lower operating costs and longer equipment life. Mastering these technologies is a step towards smarter, more economical use of energy in a variety of applications. Fuji Electric is your expert in high-performance variable-speed drives.
Our mission is to help you understand this equipment. We help you understand their importance and how they work. Finally, we help you choose and size the ideal drive for your specific needs!As a manufacturer of variable frequency drives, Fuji Electric's experts can help you make an informed choice and optimize the performance of your motorized systems: conveyor belt systems, traction applications, ac induction motors cooling fans and test benches, as well as special fields such as elevators, pumping and heating, ventilation and air conditioning (HVAC).
To modulate the output voltage and load torque speed of a 220V single-phase motor, suitable variable speed drives output filtersare required. It is essential to choose a drive compatible with the motor's output and input voltage, and frequency.
For a DC motor, unlike AC motors, it is crucial to choose the right dc drive specifically designed for this type of motor, taking into account the rated output voltage, load torque, power, rated voltage and application requirements. of ac motors
A variable frequency drive controller offers precise, speed regulation and constant torque, control, improved energy saving and overload protection, making it indispensable in many industrial and commercial applications.
Varying the speed of a three phases motor, the use of a frequency controller is the most common and effective method. The frequency of the three phase motor is adjusted by a current source inverter or voltage source inverter, enabling precise control of motor speed and torque.
The rotational speed braking torqueof an induction motor can be controlled by changing the output voltage of ac motor from the power supply using a vfd controller.
In general, most frequency drives have an output voltage andfrequency range of varying,starting at a few hertz (Hz). The minimum frequency required also depends on the application for which the applied frequency drive is used.To obtain the minimum frequency for a specific VFD drive, it is important to consult the technical specifications provided by the motor manufacturer. Going below it may result in damage to the motor winding, as the motor may overheat.
It is not possible to control several other motors with a single-speed drive controller.