Three-phase to single-phase converter module for electrically commutated motors
First Claim
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1. A converter module for converting three-phase electrical power to single-phase electrical power for powering a single-phase electrically commutated motor (ECM), said converter module comprising:
- three-phase terminals configured to be electrically coupled to a three-phase power source from which a three-phase power signal is provided;
a full-wave bridge rectifier electrically coupled to said three-phase terminals and configured to rectify the three-phase power signal to a direct current (DC) power signal;
a line output terminal and a neutral output terminal, wherein each of the line output terminal and the neutral output terminal is configured to be electrically coupled to the single-phase ECM.
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Abstract
A converter module for converting three-phase electrical power to single-phase electrical power. The converter module includes three-phase terminals and a full-wave bridge rectifier. The three-phase terminals are configured to be electrically coupled to a three-phase power source from which a three-phase power signal is provided. The full-wave bridge rectifier is electrically coupled to the three-phase terminals and configured to rectify the three-phase power signal to a direct current (DC) power signal.
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Citations
19 Claims
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1. A converter module for converting three-phase electrical power to single-phase electrical power for powering a single-phase electrically commutated motor (ECM), said converter module comprising:
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three-phase terminals configured to be electrically coupled to a three-phase power source from which a three-phase power signal is provided; a full-wave bridge rectifier electrically coupled to said three-phase terminals and configured to rectify the three-phase power signal to a direct current (DC) power signal; a line output terminal and a neutral output terminal, wherein each of the line output terminal and the neutral output terminal is configured to be electrically coupled to the single-phase ECM. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of operating a converter module to convert three-phase electrical power to single-phase electrical power to power a single-phase electrically commutated motor (ECM), said method comprising:
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receiving a three-phase power signal at three-phase terminals of the converter module; rectifying the three-phase power signal to a direct current (DC) power signal using a full-wave bridge rectifier; and supplying the DC power signal to a rectifier stage of the single-phase ECM to power the ECM. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An electrically commutated motor (ECM), comprising:
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a stator comprising windings; a rotor electromagnetically coupled to said stator and configured to rotate relative thereto; a rectifier circuit configured to rectify a low-quality direct current (DC) power signal to a high-quality DC power signal; a DC filter capacitor coupled to said rectifier circuit and configured to smooth-filter the high-quality DC power signal; a motor controller coupled to said DC filter capacitor and configured to; receive the high-quality DC power signal; invert the high-quality DC power signal to an AC power signal; and energize said windings of said stator using the AC power signal to control operation of the ECM; first housing within which said stator, said rotor, said rectifier circuit, said DC filter capacitor, and said motor controller are disposed; and a second housing disposed external to said first housing, said second housing configured to contain a converter module, said converter module comprising; a full-wave bridge rectifier configured to be electrically coupled to a three-phase power source from which a three-phase power signal is provided, and further configured to rectify the three-phase power signal to the low-quality DC power signal that is supplied to an input of said rectifier circuit. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification