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EP0568262A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Constant-frequency electric power source

Assignee: Shinko Electric Co Ltd
•
Filing: 1993-04-21
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Granted: —
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Expires: 2013-04-21
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Abstract

Abstract A constant-frequency electric power source comprising: an A.C. generator including a field coil, to be driven by an engine; a converter unit including a rectifying circuit and an inverter; and means for controlling the A.C. generator; wherein the A.C. generator has at least two groups of multi-phase output coils, one group of the at least two groups of multi-phase output coils being connected to the converter unit for providing an A.C. electric power with a constant-voltage and a constant-frequency to be supplied to a first load, and the remaining group (s)of the at least two pairs of multi-phase output coils being connected to other loads respectively, and further the output of the remaining group(s) being supplied to the A.C. generator controlling means thereby controlling the input of the field coil of the A.C. generator, and further the A.C. electric power used for the first load being different from the A.C. electric power used for the other loads.

Inventors

  • 👤 Kazuo Okubo

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 05:30
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/34; H02P; H02P9/00; H02P9/14; H02P9/26; H02P9/30; H02P2101/00; H02P2101/30

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 173 words
A constant-frequency electric power source comprising: an A.C. generator including a field coil, to be driven by an engine; a converter unit including a rectifying circuit and an inverter; and means for controlling said A.C. generator; wherein said A.C. generator has at least two groups of multi-phase output coils, one group of said at least two groups of multi-phase output coils being connected to said converter unit for providing an A.C. electric power with a constant-voltage and a constant-frequency to be supplied to a first load, and the remaining group(s) of said at least two pairs of multi-phase output coils being connected to other loads such as a second load or the like respectively, and further the output coils of said remaining group(s) being supplied to said A.C. generator controlling means thereby controlling the input of said field coil of said A.C. generator, and further said A.C. electric power used for said other load for a second load or the like being different from the A.C. electric power used for said first load.
Claim 2
Dependent Claim 27 words
A constant-frequency electric power source according to Claim 1, wherein said A.C. electric powers used for said other loads are that with a variable-frequency and a constant-voltage.
Claim 3
Dependent Claim 37 words
A constant-frequency electric power source according to Claim 1, wherein the turn number of coil of each of said remaining pairs is suitably set in accordance with the electric power required for each of said other loads.
Claim 4
Dependent Claim 58 words
A constant-frequency electric power source according to Claim 1, wherein said remaining groups of coils mounted within said A.C. generator for supplying said A.C. electric power for said other loads, are completely insulated from said converter unit thereby for generating no substantial distortion of wave-form and further increasing the characteristic of said A.C. electric power to be supplied.
Claim 5
Dependent Claim 23 words
A constant-frequency electric power source according to claim 1, wherein each group of multi-phase output coils includes coils of at least three phases.
Claim 6
Dependent Claim 27 words
A constant-frequency electric power source according to claim 5, wherein each group of multi-phase output coils includes coils of more than three phases such as six phases.
Claim 7
Dependent Claim 27 words
A constant-frequency electric power source according to any one of the preceding claims, wherein the groups of multi-phase output coils have the same number of output coils.

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