Interior permanent magnet machine systems and methods for controlling interior permanent magnet machines
First Claim
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1. An Interior Permanent Magnet (IPM) machine system comprising:
- an IPM machine including a nominal operating direct current (dc) bus voltage; and
a controller configured to detect an operating dc bus voltage of the IPM machine and to control the IPM machine based the nominal operating dc bus voltage and the detected operating dc bus voltage, wherein the controller is configured to detect an operating rotor shaft speed of the IPM machine, determine a ratio of the detected operating dc bus voltage to the detected operating rotor shaft speed and control the IPM machine based on the determined ratio.
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Abstract
Example embodiments disclose an Interior Permanent Magnet (IPM) machine system including an IPM machine including a nominal operating direct current (dc) bus voltage, and a controller configured to detect an operating dc bus voltage of the IPM machine and to control the IPM machine based on the nominal operating dc bus voltage and the detected operating dc bus voltage.
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Citations
18 Claims
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1. An Interior Permanent Magnet (IPM) machine system comprising:
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an IPM machine including a nominal operating direct current (dc) bus voltage; and a controller configured to detect an operating dc bus voltage of the IPM machine and to control the IPM machine based the nominal operating dc bus voltage and the detected operating dc bus voltage, wherein the controller is configured to detect an operating rotor shaft speed of the IPM machine, determine a ratio of the detected operating dc bus voltage to the detected operating rotor shaft speed and control the IPM machine based on the determined ratio. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of controlling an Interior Permanent Magnet (IPM) machine comprising:
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determining an operating dc bus voltage of the IPM machine and a nominal dc bus voltage of the IPM machine, the determining including, determining an operating rotor shaft speed of the IPM machine; subsequently determining a drive command based on the operating dc bus voltage of the IPM machine and the nominal dc bus voltage of the IPM machine, the subsequent determining includes, determining a ratio between the operating dc bus voltage and the operating rotor shaft speed, adjusting the determined ratio by multiplying an associated compensation coefficient with the determined ratio, and determining the drive command based on the adjusted ratio; and outputting the determined drive command to the IPM machine. - View Dependent Claims (14, 15, 16)
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17. An Interior Permanent Magnet (IPM) machine system comprising:
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an IPM machine; and a controller configured to detect an operating dc bus voltage and operating rotor shaft speed of the IPM machine, determine a ratio of the detected operating dc bus voltage to the detected operating rotor shaft speed and control the IPM machine based on the determined ratio. - View Dependent Claims (18)
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Specification