Electrical machine driven by a pulse-controlled a.c. converter
AssigneeSiemens Aktiengesellschaft
InventorsGeorg Nerowski, Bernhard Piepenbreier, Hans-Juergen Toelle
Life of this patent
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Abstract
An electrical machine driven by a pulse-controlled a.c. converter contains multiple phases subdivided into a number of n.gtoreq.2 equivalent phases sections that are extensively magnetically decoupled relative to each other. Each phase section is fed by a separate frequency converter. The clocking of the frequency converters for the n phase sections ensues out of phase by an angle of 2.pi./n relative to each other phase section.
Claims9
A polyphase electrical machine driven by a pulse-controlled a.c. converter with a plurality of frequency converters of equal rating and a total output equal to the requirements of the machine, comprising:
- means for forming at least two pole pairs;
- means for forming multiple phases in each pole pair with each phase subdivided into n.gtoreq.2 individual phase sections;
- means for extensively magnetically decoupling the individual phase sections of each phase relative to each other;
- a separate frequency converter coupled to each of said phase sections;
- and
- means for clocking the frequency converters for the n phase sections out of phase by an angle of 2.pi./n relative to each other.
Dependencies are inferred from the claim text.