Alstom MV7306P21 frequency converte

Precautions

It is strictly prohibited to perform dangerous operations such as plugging and unplugging modules while the equipment is running, in order to avoid equipment damage or electric shock to personnel.

When setting parameters, be careful to avoid incorrect settings that may cause abnormal device operation. After modifying important parameters, necessary testing and verification are required.

Equipment maintenance should be carried out by professionals. Non professionals are not allowed to disassemble the equipment without authorization to avoid irreparable damage.

Product positioning and core advantages

positioning

MV7000 is a water-cooled medium voltage inverter launched by GE, suitable for power conversion scenarios in the fields of oil and gas, ships, heavy industry, etc. It supports 3-81MW power output, with a maximum output voltage of 13kV, high reliability, high power density, and flexible configuration capability.

Core advantages

Leading power density: Using pressure bonded IGBT (PPI) technology, only 18 IGBTs can achieve 15MW output, with a power density of 1.5MVA/m ³ and compact equipment size (such as MV7306-3L with a width of only 4400mm).

High reliability: With a cumulative operation of over 14 million hours and an installed capacity of over 15GW, it supports N+1 redundancy design and can continuously conduct in case of faults, reducing downtime.

Flexible configuration: Provides two rectifier configurations: diode front end (DFE) and active front end (AFE), supporting 12/24/36 pulse harmonic control and complying with IEEE 519 standard without the need for additional filters.

Energy saving and efficient: Four quadrant operation supports energy feedback to the power grid, and the common DC bus system can recover braking energy. In AFE mode, the power factor reaches 1, and the system efficiency is as high as 99%.

Key technical characteristics

hardware design

Modular structure: The inverter cabinet adopts double-sided cooled IGBT modules, and the control hardware supports drawer style installation, making maintenance convenient (forward access design).

Transformer free design: AFE configuration does not require an input transformer, saving costs and space, and improving efficiency.

Cooling system: Integrated water cooling system, supporting redundant pump configuration, suitable for harsh environments such as ships and high vibration scenarios.

control and protection

Vector control: Equipped with Power Electronics Controller (PECe) as standard, it supports flux vector control. The speed adjustment accuracy is less than 0.5% without an encoder and less than 0.1% with an encoder.

Protection function: It has overcurrent, overvoltage, undervoltage, and motor stalling protection, supports voltage drop ride through of the power grid (continuous operation at a minimum of 70% rated voltage), and enables rapid start-up of rotating loads.

Communication protocol: Standard interfaces such as Profinet, Modbus, Ethercat, etc., supporting remote monitoring (Visor Connect system).

Harmonics and Energy Efficiency

Low harmonic: DFE configuration supports 12/24/36 pulse rectification, AFE configuration can achieve sine wave input, with harmonic content lower than IEEE 519 standard.

Energy recovery: During four quadrant operation, energy can be fed back to the grid, reducing cable losses and supporting reactive power compensation.

Application scenarios and industry adaptation

major industries

Oil and gas: liquefied natural gas (eLNG) trains, injection compressors, multiphase pumps, pipeline compressors.

Ships: cruise ships, LNG carriers, offshore drilling platforms, naval support vessels.

Heavy industry: metal rolling mill, testing bench, water pump, mine hoist, wind turbine, STATCOM (Static Var Compensator).

Typical applications

High precision control scenarios: such as steel rolling flatness control and precise power supply for offshore oil and gas exploration.

Energy saving scenario: Variable frequency speed regulation of water pumps and fans, replacing traditional mechanical couplings, with an energy-saving rate of over 30%.

Renewable energy: frequency conversion of wind farm inverters and energy storage systems.