US6910389B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor angle estimation for permanent magnet synchronous motor drive
Assignee: Infineon Technologies North America Corp
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Filing: 2002-11-12
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Granted: 2005-06-28
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Expires: 2022-11-12
Abstract
Abstract A method of determining a rotor angle in a drive control for a motor, comprising the steps of (a) determining a rotor magnetic flux in the motor; (b) estimating the rotor angle on the basis of the rotor magnetic flux; and (c) correcting the estimated rotor angle on the basis of reactive power input to the motor. Step (a) may include the step of non-ideal integration of stator voltage and current values. Step (b) may include the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F). Step (c) may include the steps of (1) calculating a first reactive power input value as 1.5*We*(C_Lq*I*I) and a second reactive power input value as 1.5*(Vq*id−Vd*iq); (2) determining a difference between said first and second reactive power input values; and (3) applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Inventors
- 👤 Eddy Ying Yin Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:03
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/08; H02P6/085; H02P6/14; H02P6/16; H02P6/18
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
102 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: a) determining a rotor magnetic flux in the motor; b) estimating the rotor angle on the basis of the rotor magnetic flux; and c) correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said differnece to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 2
Independent Claim
102 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: a) determining a rotor magnetic flux in the motor; b) estimating the rotor angle on the basis of the rotor magnetic flux; and c) correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said differnece to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 3
Dependent Claim
21 words
The method of claim 1 , wherein step (a) includes the step of non-ideal integration of stator voltage and current values.
Claim 4
Independent Claim
96 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: a) determining a rotor magnetic flux in the motor; b) estimating the rotor angle on the basis of the rotor magnetic flux; and c) correcting the estimated rotor angle on the basis of reactive power input to the motor, wherein step (a) includes the step of non-ideal integration of stator voltage and current values; and wherein step (b) includes the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 5
Independent Claim
96 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: a) determining a rotor magnetic flux in the motor; b) estimating the rotor angle on the basis of the rotor magnetic flux; and c) correcting the estimated rotor angle on the basis of reactive power input to the motor, wherein step (a) includes the step of non-ideal integration of stator voltage and current values; and wherein step (b) includes the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 6
Dependent Claim
31 words
The method of claim 1 , wherein step (c) includes the steps of: calculating said first reactive power input value as 1.5*We*(C_Lq*I*I) and said second reactive power input value as 1.5*(Vq*id−Vd*iq).
Claim 7
Independent Claim
80 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: a) determining a rotor magnetic flux in the motor; and b) estimating the rotor angle on the basis of the rotor magnetic flux; wherein step (a) includes the step of non-ideal integration of stator voltage and current values; and wherein step (b) includes the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 8
Independent Claim
80 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: a) determining a rotor magnetic flux in the motor; and b) estimating the rotor angle on the basis of the rotor magnetic flux; wherein step (a) includes the step of non-ideal integration of stator voltage and current values; and wherein step (b) includes the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 9
Independent Claim
83 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: estimating a rotor angle; and correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 10
Independent Claim
83 words
A method of determining a rotor angle in a drive control for a motor, comprising the steps of: estimating a rotor angle; and correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 11
Dependent Claim
32 words
The method of claim 6 , wherein said correcting step includes the steps of: calculating said first reactive power input value as We*(C_Lq*I*I) and said second reactive power input value as (Vq*id−Vd*iq).
Claim 12
Independent Claim
111 words
A system for determining a rotor angle in a drive control for a motor, comprising: a) a first circuit for determining a rotor magnetic flux in the motor; b) a second circuit for estimating the rotor angle on the basis of the rotor magnetic flux; and c) a third circuit for correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 13
Independent Claim
111 words
A system for determining a rotor angle in a drive control for a motor, comprising: a) a first circuit for determining a rotor magnetic flux in the motor; b) a second circuit for estimating the rotor angle on the basis of the rotor magnetic flux; and c) a third circuit for correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 14
Dependent Claim
20 words
The system of claim 8 , wherein said first circuit carries out non-ideal integration of stator voltage and current values.
Claim 15
Independent Claim
101 words
A system for determining a rotor angle in a drive control for a motor, comprising: a) a first circuit for determining a rotor magnetic flux in the motor; b) a second circuit for estimating the rotor angle on the basis of the rotor magnetic flux; and c) a third circuit for correcting the estimated rotor angle on the basis of reactive power input to the motor, wherein said first circuit carries out non-ideal integration of stator voltage and current values; and wherein said second circuit corrects phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 16
Independent Claim
101 words
A system for determining a rotor angle in a drive control for a motor, comprising: a) a first circuit for determining a rotor magnetic flux in the motor; b) a second circuit for estimating the rotor angle on the basis of the rotor magnetic flux; and c) a third circuit for correcting the estimated rotor angle on the basis of reactive power input to the motor, wherein said first circuit carries out non-ideal integration of stator voltage and current values; and wherein said second circuit corrects phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 17
Dependent Claim
28 words
The system of claim 8 , wherein said third circuit: calculates said first reactive power input value as 1.5*WE*(C_Lq*I*I) and said second reactive power input value as 1.5*(Vq*id−Vd*iq).
Claim 18
Independent Claim
80 words
A system for determining a rotor angle in a drive control for a motor, comprising: a) a first circuit for determining rotor magnetic flux in the motor; and b) a second circuit for estimating the rotor angle on the basis of the rotor magnetic flux; wherein said first circuit carries out non-ideal integration of stator voltage and current values; and wherein said second circuit corrects phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 19
Independent Claim
80 words
A system for determining a rotor angle in a drive control for a motor, comprising: a) a first circuit for determining rotor magnetic flux in the motor; and b) a second circuit for estimating the rotor angle on the basis of the rotor magnetic flux; wherein said first circuit carries out non-ideal integration of stator voltage and current values; and wherein said second circuit corrects phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F).
Claim 20
Independent Claim
86 words
A system for determining a rotor angle in a drive control for a motor, comprising: a circuit for estimating a rotor angle; and a circuit for correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 21
Independent Claim
86 words
A system for determining a rotor angle in a drive control for a motor, comprising: a circuit for estimating a rotor angle; and a circuit for correcting the estimated rotor angle on the basis of reactive power input to the motor, by calculating a first reactive power input value and a second reactive power input value; determining a difference between said first and second reactive power input values; and applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Claim 22
Dependent Claim
28 words
The system of claim 13 , wherein said correcting circuit: calculates said first reactive power input value as We*(C_Lq*I*I) and said second reactive power input value as (Vq*id−Vd*iq).
Claim 23
Dependent Claim
23 words
The system of claim 8 , wherein said system is connected to a terminal of said motor for measuring said rotor magnetic flux.
Claim 24
Dependent Claim
15 words
The system of claim 15 , wherein said motor is a permanent magnet surface-mount motor.
Claim 25
Independent Claim
27 words
The system of one of claims 8 and 13 , wherein said system is connected to a terminal of the motor for measuring said reactive power input.
Claim 26
Dependent Claim
15 words
The system of claim 17 , wherein said motor is a permanent magnet surface-mount motor.
Claim 27
Dependent Claim
24 words
The system of claim 8 , wherein said system is connected to a terminal of the motor for measuring said stator voltage current values.
Claim 28
Dependent Claim
15 words
The system of claim 19 , wherein said motor is a permanent magnet surface-mount motor.
References Cited (Backward Citations)
US5339012A
Cited
US5272429A
Cited
US5467025A
Cited
US6005364A
Cited
US5608300A
Cited
US6249067B1
Cited
US6462491B1
Cited
US6441572B2
Cited
US6396229B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-06-27 | 2008-12-27 | 2009-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-06-27 | 2012-12-27 | 2013-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-06-27 | 2016-12-27 | 2017-06-28 | $7700.00 | Window Closed / Lapsed |