Regarding the starting method for the extremely large 25,000 KW motor
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Has any of you seen the starting method for a 20,000-kilowatt motor? Can you talk about it?
Siemens large-frequency variable frequency soft start systems, such as GL150, etc
Variable-frequency soft start, high-voltage frequency converters – Siemens, Timek 등 all can be used to achieve multiple drives from one source. Timek’s support enables the simultaneous start of synchronous and asynchronous motors using one frequency converter.
For ordinary asynchronous motors, it is recommended to use a dedicated transformer together with a solid-state soft starter; frequency converters are not advised due to the costs associated with purchasing them as well as the maintenance issues that may arise later on. If it is a synchronous motor (with a heavy-load type of load), it is recommended to consider a variable-frequency synchronous soft-start solution
GE inverter with dedicated transformer
The inverter starts or reduces the voltage in a soft start manner. Variable-frequency starting provides the best results, but it has the highest cost and requires the most space. The reduction and supplementation should be lower, and the footprint should also be smaller. For a motor of this size, a dedicated transformer is usually required.
Soft starters, frequency converters, and also what are known as liquid resistance starters