Electrical power generation system
AssigneeSundstrand Corporation
InventorsP. John Dhyandchand, Vietson M. Nguyen
Life of this patent
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Abstract
An electrical power generation system for generating controlled AC output including a generator for converting mechanical input into variable frequency AC, a rectifier for rectifying the AC into DC having a variable magnitude, an inverter for inverting the DC into controlled AC output, a feedforward sensor for sensing the rate of change of the DC, a feedback AC sensor for sensing the controlled output AC, and an inverter controller responsive to the rate of change of the DC and to the controlled AC output for regulating the magnitude of the controlled AC output.
Claims23
A system for providing a controlled AC output comprising:
- DC providing means for providing DC, said DC having a parameter related thereto;
- inverter means connected to said DC providing means for inverting said DC into said controlled AC output;
- feedforward parameter sensing means for sensing said parameter related to said DC, said feedforward parameter sensing means providing a feedforward signal varying in accordance with said parameter;
- feedback AC sensing means for sensing said controlled AC output, said feedback AC sensing means providing a feedback signal varying in accordance with said controlled AC output;
- and,
- inverter controlling means connected to said inverting means, to said feedforward parameter sensing means, and to said feedback AC sensing means for controlling said controlled AC output in response to said feedforward signal and to said feedback signal, said inverter controlling means including comparing means for comparing said feedforward signal to said feedback signal.
A system for providing a controlled AC output comprising:
- mechanical input converting means for converting a mechanical input into an electrical output having a variable frequency;
- rectifying mean for rectifying said electrical output and for providing DC having a magnitude dependent upon said variable frequency;
- inverting means connected to said rectifying means for inverting said DC into said controlled AC output;
- feedforward sensing means connected to one of said mechanical input converting means and said rectifying means for sensing a parameter related to said DC, said feedforward sensing means providing a feedforward signal varying in accordance with said parameter;
- feedback sensing means for sensing said controlled AC output, said feedback AC sensing means providing a feedback signal varying in accordance with said controlled AC output;
- and,
- inverter controlling means connected to said inverting means, to said feedforward sensing means, and to said feedback AC sensing means for controlling said controlled AC output in response to said feedforward signal and to said feedback signal, said inverter controlling means including summing means for summing said feedback signal and said feedback signal to produce a sum of said feedforward signal and said feedback signal.
A method for generating a controlled output AC comprising the following steps:
- converting mechanical input to variable frequency AC;
- rectifying said variable frequency AC for providing DC;
- sensing a rate of change of said DC;
- sensing the controlled AC output;
- and
- inverting said DC having said variable magnitude into controlled output AC in response to said rate of change of said DC and said controlled AC output.
Dependencies are inferred from the claim text.