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Generator
Water-cooled Generators
Using hydrogen to directly cool the rotor and water to directly cool the stator coils, Mitsubishi Electric water-cooled generators have the highest cooling performance and offer higher efficiency.
Note: Power-generator business was transferred to Mitsubishi Generator Co., Ltd on April 1, 2024. Click here for details.
Specifications
| Output |
~2,000MVA class (4pole machine) ~1,400MVA class (2pole machine) |
|---|---|
| Voltage | ~30kV |
| Thermal insulation class | Class 155 (F) |
| Temperature rise | Class 130 (B) |
| Rotational speed | 1,500min-1/1,800min-1(4pole machine) 3,000min-1/3,600min-1(2pole machine) |
| Frequency | 50Hz / 60Hz |
| Efficiency | ~99.0% |
System configuration
Cooling Structure
Latest Technologies
Large output generators
In parallel with improving cooling performance, it is possible to increase output density and therefore maximum output. The largest outputs for 4- and 2-pole water-cooled generators were a 1,600MVA class in 2,000 and 1,200MVA class in 2012, respectively. Today, designs for 2,000MVA class 4-pole generators and 1,400MVA class 2-pole generators have been completed.
Technologies applied
Stator coil-end rigidly has been improved by incorporating a specially designed large resin cone that supports the structure and enables maximum output to be achieved. A high-quality brazing system that applies vertical brazing has also been introduced, ensuring the highest level of reliability.
FTC(Fan-to-Cooler)
New series water-cooled generator
In order to meet diversified market needs, a new series of water-cooled generators has been developed to achieve higher efficiency, easy maintenance and shorter delivery time.
Cooling structure of conventional water-cooled generator
Cooling structure of water/radial ventilation-cooled generator
