Use of Three-Phase Induction Motors in Industry
Today, three-phase induction motors have wide applications in all sectors of industry. The most common methods for their regulation involve frequency converters (FC) and soft starters (SS). A frequency converter consists of a bridge that converts alternating current to direct current, and then an inverter that transforms the obtained direct current into alternating current of the desired frequency and amplitude.
Challenges of Aging Equipment
Many oil and gas and petrochemical enterprises use equipment whose service life significantly exceeds the norms and requires replacement. The use of frequency converters in the field of automation opens up wonderful opportunities for energy savings. They are used in air cooling units (ACU), ventilation systems, compressors, pumping equipment, cooling towers, drive systems of fans and conveyors, as well as in dosing processes.
Application in the Oil and Gas Industry
Air cooling units in the oil and gas industry are responsible for the cooling and accumulation of liquids, vapors, and gases. The main goal of installing frequency converters is to enhance the safety of regulation systems and reduce electricity costs. They are widely used to control various pumps, as their use ensures savings in electricity consumption and smooth regulation, which positively impacts the longevity of pipelines and fittings.
Cooling Systems
In addition, frequency converters are used in cooling towers. Fan cooling systems provide cooling of water in closed-loop hydraulic systems. The use of cold water in the oil and gas and petrochemical industry is closely related to the accumulation of waste steam and cooling of gaseous and liquid products of chemical production.
Types of ABB Frequency Converters
ABB frequency converters are divided into two main types:
- Standard FC: These are designed for use with pumps, fans, and equipment that operates with constant torque. These solutions are suitable for easy installation and operation and have increased protection against dust and moisture.
- Industrial Frequency Converters: These devices are designed to work with high-power motors and heavy loads. They provide extended functional capabilities and adapt to various sectors of industry, including oil and gas.
Electric Drives for Oil and Gas Enterprises
A large number of electric drives and motors with a capacity of up to 200 kW have been manufactured for many oil and gas companies. This equipment is actively used at pumping stations to control submersible pumps that pump oil. Solutions for ultrasonic level monitoring of oil in wells and non-contact monitoring of pump conditions have also been implemented.
Application on Drilling Rigs
Many ABB drives are used on drilling rigs, where multi-motor electric drives are used for main mechanisms, regulated by four induction motors — on two pumps, a winch, and a rotor.
Conclusion
An overview of the equipment and systems in which the use of frequency converters is an integral component indicates their importance for ensuring successful and efficient operations in the industry.