Electrical machine

Details Electrical machine Electrical machine

2008-07-21

2010-11-09

Ip, Paul (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S701000, C322S089000

Reexamination Certificate

active

07830105

ABSTRACT:
Embedding electrical machines in gas turbine engines has particular advantages by avoiding the need to provide mechanical connections. However, electrical machines such as switched reluctance electrical machines require relatively large electrical capacitors to accommodate and filter voltage variations in the phases of the electrical machine. Generally, the electrical machine will have a motoring period or generating period with a spacer period between. By injecting electrical current as electrical power in the spacer period, there is limited effect upon net torque within the electrical machine or electrical power generation. However, such stored electrical power in an inductive winding element of the electrical machine augments power pulses provided by a power source incorporating an electrical capacitor. In such circumstances, a smaller sized electrical capacitor can be used.

REFERENCES:
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patent: 2009/0206607 (2009-08-01), Nakamura et al.
patent: 2010/0045221 (2010-02-01), Trainer et al.
patent: 0664601 (1995-01-01), None

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