A VFD, short for variable frequency drive, is a type of a motor control electrical device for starting and controlling an AC inductive motor and its speed with varying frequency (Hz) and voltage. A VFD Control System consist on an AC control panel housing the VFD and any associated motor control or circuit protection devices in an enclosure, protecting them from electrical shocks, fires, moisture, corrosion, dust, and other conditions. The most common NEMA ratings for VFD control panel enclosures are NEMA 12, NEMA 3R, and NEMA 4x. A VFD control panel typically houses a selection of control panel components including a VFD, harmonic filters, line reactors, surge protectors, a bypass, circuit breakers, motor starters, soft starters and some kind of cooling unit, as VFD’s tend to produce a lot of heat. VFD control panels are available in a wide variety of power ratings, and are used across large-scale industrial applications like pumping, drilling and to control other heavy-duty equipment such as elevators, rock crushing machines, and water & sewer treatment plants and water conservation for agricultural systems.
WULHD Intelligent Series VFDs
The WULHD Intelligent Series AC drive VFD Control Panels are powered by Fuji electric VFDs for controlling AC motor. The only drives on the market with a default 3 year manufacturer’s warranty. WULHD is a leader in bringing world class intelligence to our VFD product including our own Internet of Things (IoT) platform where your VFDs can be monitored and controlled remotely. You can even set alert thresholds and notifications to reduce the Mean Time to Repair for your facilities to ensure your production continues.
VFD Control System Solution
WULHD is a full service provider of AC drive VFD Packaged Solutions. We can build your VFD according to your needs and specifications; from fractional Horsepower to large 1000+ Horsepower motors. Below is a list of some of our most common applications and features including control the speed of ac motor.
Energy Savings
VFDs achieve true energy cost savings by controlling the number of AMPs a motor can draw. According to the EPA it is possible to achieve a 50% – 85% reduction in energy cost through the use of Variable Speed Drives. A far greater reduction than the use of mechanical flow control devices such as dampers or valves.
Example
Replacing a damper controlled fan system with a variable speed control system with operating characteristics of 85% air flow required for 2,000 hrs/yr, 60% air flow required for 2000 hrs/yr, and operated by a 20Hp (15kW) motor.
Energy required by using damper control: 50,100kWh/yr
Energy required using drive control: 24,900kWh/yr
Energy savings by using drive control: 25,200kWh/yr
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CO2 EMISSIONS REDUCTION
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REDUCED MAINTENANCE COST & AMBIENT NOISE
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KEY FEATURES OF WULHD INTELLIGENT SERIES VFD PACKAGES
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INTERNET OF THINGS (IOT) APPLICATION FOR VFD CONTROL SYSTEMS
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WULHD INTELLIGENT SERIES VFD PACKAGES