There are various types of variable frequency drives (VFDs) available in the market. Each one is designed for a unique application. This article by CM Industry Supply Automation will review the main factors that will help you make an informed decision.
There are various factors you have to consider while choosing a variable frequency drive for any type of drive system. These factors include:
1. The incoming power supply
The drive system incoming power supply is the biggest definer of volume in your system. VFDs should be chosen based on their compatibility with the power supply. According to voltage and frequency, recent capacity, and available KVA, you need to make the right selection.
2. The type of motor
Usually, several induction motors can advantage of having a Variable Frequency Drive including higher efficiency. Permanent magnet synchronous motors are not usually self-starting and require a Variable Frequency Drive for working. Some VFDs are available with permanent magnet motor control choices as a usual feature, permitting users for controlling the permanent magnet motor to drive the machine proficiently.
3. The rated current, frequency, and voltage of the motor
The rated current, frequency, and voltage of the motor are crucial factors to make a choice. A VFD must not be chosen based on the motor power rating alone. It is highly crucial to find the VFD that can offer the motor’s rated nameplate current uninterruptedly.
4. The application type
Many Variable Frequency Drives are only made to be utilized on normal duty or light duty loads such as pumps or centrifugal fans and will only stand lighter overloads for a short time frame. Some Variable Frequency Drives Are Dual Rated and can be utilized on HD or ND/LD loads both.
5. The installation setting
Choose the right IP rating for the Variable Frequency Drive identified by if it will be installed in inclusion or straight onto a wall, machine leg, or pump skid.
Understand condensation that takes place if the Variable Frequency Drives are exposed to high-temperature changes for instance daytime sun to night-time frost.
6. Harmonics
When connecting Variable Frequency Drive or other non-linear loads you must consider the effect on the power supply. Non-linear loads including diode rectifier input designed to ‘bite’ current from the chunks mains and at particular multiples of the base supply frequency instead of sinusoidal as with linear loads which in turn results in misrepresentation to the supply voltage waveform.
Harmonic currents can put an adversarial effect on transformers, cables, and delicate electronic devices, so certain harmonic limits are applied before linking VFD loads onto a new or current network.
Looking for Lenze VFD, Variable Frequency Drive, Inverter Drive, Variable Speed Drive, or Servo Drive? Speak to CM Industry Supply Automation specialists at +91 8956113099 or +61 3 9013 5882
CM Industry Supply Automation specialist offers great support to different industries regarding industrial automation products. Our specialist offers advice on the drive system and helps in choosing the best variable frequency drive for the essential application. From fan or pump, or a heavy-duty application, we can provide VFD from dimensioning to installation services at the best price.
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CM Industry Supply Automation are supplier and repair services provider of drives, VFD drive (variable frequency drive), VSD (variable speed drive), inverter, frequency converter, ac drive, servo drive, servo motor, industrial drives, industrial drives and controls, industrial drives and applications, high-power servomotor, high torque DC servo motor, high-power servo drives, high frequency drives, of some well-known brands that include:
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