An electrical power generating arrangement (for example, in a combined heat and system in is which fixed frequency AC electric power for supply to the mains or grid is output from a frequency converter supplied with a variable frequency AC power input from {HEAD ~ an electrical generator} driven by {TAIL ~ an internal combustion engine} 
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An electrical power generating arrangement ( for example , in a combined heat and system in is which fixed frequency AC electric power for supply to the mains or grid is output from a frequency converter supplied with a variable frequency AC power input from { HEAD ~ an electrical generator } driven by { TAIL ~ an internal combustion engine }
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