Dual-structured aircraft engine starter/generator
First Claim
1. An aircraft starting and generating system, comprising:
- a first starter/main machine assembly that includes a first exciter and a first main machine;
a second starter/main machine assembly that includes a second exciter and a second main machine;
a permanent magnet generator (PMG) that is connected to the first and second starter/main machine assemblies;
a gear train provided between the first main machine and the PMG and between the second main machine and the PMG, the gear train providing a speed increasing function;
a first inverter/converter/controller (ICC) that is connected to the first starter/main machine assembly and to the PMG; and
a second ICC that is connected to the second starter/main machine assembly and to the PMG,wherein the first and second ICCs generate AC power to respectively drive the first and second starter/main machine assemblies in a start mode of the starting and generating system for starting a prime mover of the aircraft, andwherein the first and second ICCs convert AC power, respectively obtained from the PMG after the prime mover has been started, to DC power in a generate mode of the starting and generating system.
1 Assignment
0 Petitions
Accused Products
Abstract
An aircraft starting and generating system includes a first starter/main machine assembly that includes a first exciter and a first main machine, and second starter/main machine assembly that includes a second exciter and a second main machine. The system also includes a permanent magnet generator (PMG) that is connected to the first and second starter/main machine assemblies. The system further includes a first inverter/converter/controller (ICC) that is connected to the first starter/main machine assembly and to the PMG, and a second ICC that is connected to the second starter/main machine assembly and to the PMG. The first and second ICCs generate AC power to respective drive the first and second starter/main machine assemblies in a start mode of the starting and generating system for starting a prime mover of the aircraft, and the first and second ICCs convert AC power, respectively obtained from the PMG after the prime mover has been started, to DC power in a generate mode of the starting and generating system.
-
Citations
18 Claims
-
1. An aircraft starting and generating system, comprising:
-
a first starter/main machine assembly that includes a first exciter and a first main machine; a second starter/main machine assembly that includes a second exciter and a second main machine; a permanent magnet generator (PMG) that is connected to the first and second starter/main machine assemblies; a gear train provided between the first main machine and the PMG and between the second main machine and the PMG, the gear train providing a speed increasing function; a first inverter/converter/controller (ICC) that is connected to the first starter/main machine assembly and to the PMG; and a second ICC that is connected to the second starter/main machine assembly and to the PMG, wherein the first and second ICCs generate AC power to respectively drive the first and second starter/main machine assemblies in a start mode of the starting and generating system for starting a prime mover of the aircraft, and wherein the first and second ICCs convert AC power, respectively obtained from the PMG after the prime mover has been started, to DC power in a generate mode of the starting and generating system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. An aircraft starting and generating system, comprising:
-
first starter/main machine assembly means for providing a start and a generate function for the aircraft; second starter/main machine assembly means for providing a start and a generate function for the aircraft; permanent magnet generator (PMG) means; first ICC means for driving the first starter/main machine assembly means; second ICC means for driving the second starter/main machine assembly means; and speed increaser gear train means, wherein the first and second starter/main machine assembly means are connected in parallel to each other, and wherein the first and second start/main machine assembly means are connected to the speed increaser gear train means which is in turn connected to the PMG means, wherein the first and second ICC means generate AC power to respectively drive the first and second starter/main machine assembly means in a start mode of the starting and generating system for starting a prime mover of the aircraft, and wherein the first and second ICC means convert AC power, respectively obtained from the PMG means after the prime mover has been started, to DC power in a generate mode of the starting and generating system. - View Dependent Claims (18)
-
Specification