Patent ID: 8269449
Filing Date: 2012-09-18
Classification: F01D,F05D,H02P

Abstract:
1. A method for starting and operating an electrically driven load by power supply from a mechanical driver, the method comprising: the load mechanically connected to a first electrical machine in a power range of 10 MW and above; said mechanical driver mechanically connected to a second electrical machine; electrically interconnecting the first electrical machine to the second electrical machine at a standstill or when at least one of the first machine and the second machine have low speed, whereby the connection of the second electrical machine is dedicated to the first electrical machine; in an acceleration phase, accelerating the first electrical machine by accelerating the second electrical machine with the mechanical driver; and when the first electrical machine has reached a predefined rotational speed, synchronizing the first electrical machine with a local electrical power network and connecting it to the network.