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Both current source inverter and voltage source inverter types are available for medium voltage drives, while VSI versions are more common due to their high dependability and low harmonic distortion. This arrangement of AC drives is known as a medium voltage multilevel voltage source PWM drive. Remember that inverters convert DC power to AC power and then convert it back at the necessary frequency and voltage.
The output of the inverter is referred to as “multi-level,” and PWM, or pulse-width modulation, shifts the DC voltages to produce AC power. Instead of simply two voltages, as with a standard 2-level inverter, the inverter in the multi-level design uses numerous DC voltages to create the AC waveform. It is hence almost sinusoidal in nature. As a result, it is possible to lower the PWM switching frequency and lower the dV/dt, both of which lower harmonics.
The multi-phase transformer used on the front end of the majority of medium voltage AC drives works in tandem with the multi-level inverter to lessen harmonics. An active front end may also be employed for applications with extremely dynamic loads. By tracking the harmonic level and dynamically filtering the waveform to offer damping, the active front end lowers harmonics on the line side.
Medium Voltage AC Drives for precise speed and torque control and dependable performance. designed to suit a wide range of industry requirements for general-purpose and specialised variable and constant torque applications, including centrifugal fans, pumps, conveyors, and mills.
The Global medium voltage drives market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
The new VACON1000 medium-voltage drive is made available by Danfoss.a little addition to Danfoss’ line of adaptable, modular medium-voltage drivers The new VACON 1000 medium-voltage drive has helped Danfoss Drives, a pioneer in AC drive technology, diversify its offering of medium-voltage solutions.
The VACON 1000 air-cooled MV drive is the top option for industrial medium-voltage general purpose applications, especially for variable torque loads like pumps and fans, thanks to Danfoss’ unmatched competence in cutting-edge AC drive technologies. The VACON 1000, which is available in voltage ranges from, has the smallest footprint of any air-cooled medium-voltage drive available below 215 A.
While its modular architecture assures simple spare parts management and maintenance, its stand-alone design enables easy and safe installation and quick commissioning. The VACON 1000 complies with worldwide medium-voltage drive safety criteria and appropriate IEC and UL standards. As the globe looks for ways to quickly and shrewdly reduce energy usage, energy efficiency is a critical lever.
According to studies, adding variable speed drives in all appropriate pump, fan, and compressor applications might cut energy usage by up to 8%, according to Dan Isaksson, head of medium-voltage drives at Danfoss Drives. The VACON air-cooled medium-voltage variable speed drive from Danfoss is perfectly suited for these applications and complements the VACON liquid-cooled medium-voltage drive as well as the company’s extensive selection of low-voltage drives, giving users of variable speed drives the option to select the company’s medium-voltage drive products that are the best fit for their needs.
ABB has introduced a medium-voltage VFD (Variable-frequency Drive) with a rated capacity of 400 to 1,000kV and a voltage of up to 6.9kV, which is appropriate for a variety of applications without additional engineering design. The air-cooled ACS2000 VFD (Variable-frequency Drive) is specifically utilised in the cement, mining, metallurgy, pulp and paper, water, electric power, chemical, oil and gas sectors for fans, pumps, compressors, and other public applications.
Innovative technologies are incorporated into the ACS2000 VFD (Variable-frequency Drive) to address industry difficulties including the need for adaptable power supply connections, lower harmonics, lower energy consumption, static var compensation, and simple installation and commissioning. Depending on the user’s preference and installed equipment, the ACS2000 VFD (Variable-frequency Drive) may not utilise an input isolation transformer and instead permits direct connection to the power supply (direct grid connection) or it may be linked to an input isolation transformer.
Due to the lack of a transformer required in the direct grid connection arrangement, consumers can take advantage of cheaper investment costs. The ACS2000 VFD (Variable-frequency Drive) has a compact design, is less in weight, requires less space in the electrical room, and has lower transportation expenses than other VFDs (Variable-frequency Drives) that need transformers.
The speed-controlled standard induction motor retrofit projects are appropriate for the ACS2000 for direct connection to the 6.0–6.9kV grid due to its small design. An input transformer is necessary for applications that call for voltage matching or electrical isolation of the power source, and the ACS2000 VFD (Variable-frequency Drive) can be linked to a traditional double-winding oil-immersed or dry-type input isolation transformer.
Reactive power compensation and four-quadrant operation are further advantages of integrating active front-end (AFE) technology, which helps reduce grid-side harmonics without the use of expensive, dedicated transformers. In accordance with various standards, AFE satisfies the requirements for current and voltage harmonics and offers the features of low harmonics. It is no longer necessary to install line-side filters or do harmonic analysis.
The ACS2000 VFD control platform makes use of ABB’s highly regarded DTC platform, which may deliver the highest torque and speed performance and the lowest loss ever seen in a medium-voltage AC VFD (Variable-frequency Drive). Under all circumstances, VFD (Variable-frequency Drive) control is swift and fluid. The ACS2000 has a very low total investment cost over the course of its life due to its adaptable power supply connections, reduced harmonics and energy usage, simple installation and commissioning, and higher dependability.
The ACS2000 VFD (Variable-frequency Drive) is compatible with common motors and cables because it utilises a patented, IGBT-based multi-level design that is based on the VSI topology from ABB. This design also produces nearly sinusoidal current and voltage waveforms.
