US20140266077A1 - Variable speed constant frequency system with generator and rotating power converter - Google Patents
Variable speed constant frequency system with generator and rotating power converter Download PDFInfo
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- US20140266077A1 US20140266077A1 US13/835,089 US201313835089A US2014266077A1 US 20140266077 A1 US20140266077 A1 US 20140266077A1 US 201313835089 A US201313835089 A US 201313835089A US 2014266077 A1 US2014266077 A1 US 2014266077A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/48—Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
- H02P9/305—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices controlling voltage
Definitions
- the present inventive concept is related to generator architectures and in particular to generator architectures utilizing main field rotating power converters.
- generators convert mechanical energy to electrical energy via the interaction of rotating magnetic fields and coils of wire.
- a multitude of generator architectures have been developed with various means of providing interaction between magnetic fields and coils of wire.
- PMG permanent magnet generator
- Another type of generator supplies current through a field coil to generate the desired magnetic field, which is rotated via the mechanical energy supplied by a prime mover, such that a rotating magnetic field is created that interacts with stator coils to provide an output voltage.
- the output voltage supplied by the PMG depends only on the magnitude of the mechanical energy supplied by the prime mover.
- the output voltage of the generator can be regulated by varying the current supplied to the field coil.
- the latter example known as a wound field synchronous machine, is widely utilized.
- a PMG is sometimes utilized in conjunction with the brushless wound field synchronous machine to source the current supplied to an exciter field winding to regulate the output of the wound field synchronous machine.
- a typical variable frequency generator includes a permanent magnet section, an exciter section, and a main generator section.
- the permanent magnet portion includes permanent magnets employed on the rotating portion, which generate an alternating current voltage on the stator portion.
- the AC voltage provided by the permanent magnet portion is rectified and selectively applied to the exciter winding on the stationary portion of the exciter.
- the exciter field current interacts with the rotating exciter armature windings to provide an AC voltage.
- a rotating rectifier rectifies the AC voltage and supplies the DC voltage to a main field winding on the rotating portion of the main generator section. Rotation of the motive power shaft and the main field winding induces three-phase AC output voltage on the generator armature winding.
- the magnitude of the AC generator output voltage is regulated by controlling the current supplied to the exciter field coil on the stationary portion of the exciter.
- the three-phase output voltage and frequency of the generator is subjected to the speed of motive power shaft.
- a three-phase dc link inverter is employed between the generator output and the load.
- This type of an electric power generating system is commonly known as a variable speed constant frequency (VSCF) system.
- VSCF variable speed constant frequency
- conventional (VSCF) have a reduced power density and do not provide a means of controlling the generating system to control the power density.
- a generator system comprises a generator having a stationary portion and a rotating portion, a number of identical output channels and a control unit.
- the generator comprises an exciter field, a rotating power supply, and a number of identical generator channels.
- the exciter field winding is disposed on the stationary portion.
- the rotating power supply disposed on the rotating portion and comprises of a three-phase exciter armature winding connected to a 6-pulse rectifier, and a dc bus capacitor.
- Each generator channel comprises a control transformer primary winding disposed on the stationary portion, a main field winding disposed on the rotating portion, a main field power converter disposed on the rotating portion that delivers modulated dc power from the rotating power supply, a center-tap single phase armature winding disposed on the stationary portion to produce dc modulated power.
- Output channel comprises of a set of two bidirectional switches connected to the generating channel outputs of the single phase armature winding and alternatively controlled to provide alternative power at desired frequency.
- Each output channel further includes an output filter connected to the bidirectional switches via interface inductors.
- Each generating channel yet further includes control transformer secondary windings and a set of gate drives disposed on the rotating portion and communicating control signals to the main field power converter switches to provide desired frequency at the load.
- the generator system further includes a variable speed constant frequency control unit (VSCFCU) in electrical communication with the generator and output channels.
- VSCFCU variable speed constant frequency control unit
- the VSCFCU is configured to generate the control signals based on the output phase voltage and output filter capacitor current to provide n-phase constant voltage constant frequency ac power at the load
- FIG. 1 is a circuit diagram of an electric power generation and distribution system including a variable speed constant frequency unit according to an embodiment of the present invention.
- FIG. 1 is a circuit diagram of electric power generating system 50 according to an embodiment of the present inventive concept.
- System 50 includes a generator 52 and a variable speed constant frequency control unit (VSCFCU) 54 .
- the generator is a multi-channel generator 52 , which includes a plurality of channels.
- a switching unit 56 may be connected to the output of each channel of the multi-channel generator 52 to provide a desired frequency and phase at the load 57 .
- Each switching unit 56 includes a pair of bi-directional switches 58 , 60 , which are discussed in greater detail below.
- an output filter 62 such as an LC filter, is connected to the output of each switching unit 56 via a set of interface inductors 64 to filter out a high frequency component.
- Phase voltage, e.g., voltage across filter capacitor 66 , and capacitor current delivered by the current sensor 68 are fed back to the VSCFCU 54 .
- the VSCFCU 54 may be in connection with each switching unit 56 to control each respective pair of bi-directional switches 58 , 60 . Accordingly, the VSCFCU 54 may control the modulation of the output voltage at each channel based on the feedback phase voltage and capacitor current (Icx).
- Current sensor 68 may be coupled to the output of each filter 62 to provide Icx to the VSCFCU 54 .
- Generator 52 includes stationary portion 70 and rotating portion 72 .
- Generator 52 includes a controlled rotating DC power supply and a number of generator channels.
- the amount of channels included in the system 50 may include, but are not limited to, 1 channel, 2 channels, 3 channels, etc.
- An example of a three-channel system is illustrated in FIG. 1 , which may generate a three-phase AC output with 120° degrees with respect to the three channels (phases). Although only a single channel will be described from here on out, it is appreciated that all the channels included in the system 50 , for example all three channels, operate in a similar manner.
- a stationary part of each generating channel includes a center-tap single-phase main armature winding 74 , and a primary winding 76 disposed on the stationary portion 70 .
- a rotating part of each generating channel includes a channel main field winding 78 , a main field rotating power converter 80 , and secondary control windings 82 and 84 of the controlled rotating transformer connected to the inputs of respective gate drives 86 and 88 .
- the rotating part of the each channel is disposed on the rotating portion 72 of the generator 52 .
- the generator includes a controlled rotating power supply having a stationary part and a rotating part.
- the stationary part includes an exciter field winding 90 disposed on the stationary portion 70 of the generator 52 .
- the rotating part includes a three-phase exciter armature winding 92 connected to a 6-pulse rotating rectifier 94 , and a DC bus capacitor CdcR, all of which are disposed on the stationary rotating portion 72 of the generator 52 .
- the AC power supplied by the exciter armature winding 92 is converted into a DC power by the rotating rectifier 94 .
- the main field rotating power converter 80 selectively delivers the rectified DC power at the rotating DC bus to the channel main field winding 78 .
- the rotating portion 72 further includes the hi-side gate driver 86 and the lo-side gate driver 88 .
- the hi-side gate driver 86 , a lo-side gate driver 88 may selectively be controlled by the VSCFCU 54 to output the signals that to selectively control a respective main field rotating power converter 80 .
- each channel main field rotating power converter 80 includes a high-side switch T 1 r , a low-side switch T 2 r , and diodes D 1 r and D 2 r .
- each individual channel may be independently controlled. For example, when switches T 1 r and T 2 r of the main field rotating power converter 80 are both turned On, then the positive DC voltage provided by the rotating DC bus is applied to the respective channel main field winding 78 and allows current to build up in the respective channel main field winding 78 .
- a conductive current path is created from the rotating DC bus through switch T 1 r to the respective channel main field winding 78 and then through switch T 2 r .
- switch T 2 r By keeping one of the switch (T 2 r ) On and pulse-width modulating switch T 1 r the current in the channel main field winding 78 is modulated.
- T 1 r is On the voltage across the main field winding 78 (which is equal to the rotating DC bus voltage), and main field current increases.
- T 1 r is Off the main field current circulates through T 2 r and D 2 r and decreases. The voltage across the main field winding 78 is near zero.
- the operating mode of the switches can be alternating: T 2 r switch is closed, while T 1 r is in PWM mode for a period of time, and then T 2 r switch is in PWM mode, while T 1 r is closed for the same period of time, and so on.
- switches T 1 r and T 2 r of the main field rotating power converter 80 are both Off, then current flows through diodes D 1 r and D 2 r and voltage across the channel main field winding 78 equals negative rotating DC bus voltage forcing current stored in the main field winding 78 to rapidly decrease to zero. The negative energy is fed back to the rotating DC power supply.
- each channel single phase main armature winding 74 is formed as a center-tapped winding having the center connected to a neutral potential point, (e.g., ground) to define an upper-half winding and a lower-half winding.
- Each switching unit 56 includes a first bidirectional switch 58 and a second bidirectional switch 60 .
- the first bidirectional switch 58 is connected to the upper winding of a respective main armature winding 74 and the second bidirectional switch 60 is connected to the lower winding.
- each bidirectional switch 58 , 60 includes four diodes and an IGBT switch.
- the four diodes are constructed as an H-bridge.
- the IGBT switch is connected in parallel with the H-bridge, and the gate of the IGBT switch is connected to the respective half of the winding, i.e., the upper-half winding or the lower-half winding.
- the outputs of the first and second bidirectional switches 58 , 60 are connected to an input of a respective LC filter 62 via interface inductors 64 to reduce circulating current during IGBT switches commutation.
- the LC filter 62 filters out the high frequency components from the modulated signal output from the respective bidirectional switches 58 , 60 .
- the VSCFCU 54 monitors the current supplied to exciter field winding 90 and the phase voltage at the output of one or more of the channels via the feedback phase voltage. Accordingly, the VSCFCU 54 may regulate the current supplied to exciter field winding 90 to maintain constant generator system output voltage. In another embodiment, the exciter current supplied to the exciter field winding 90 may be controlled to obtain near speed independent voltage at the rotating DC bus.
- the VSCFCU 54 may modulate the current applied to the generator channel primary windings 76 , thereby modulating the current realized at the respective main field winding 74 . More specifically, the VSCFCU 54 receives the feedback phase voltage and capacitive current signals (Icx) and may modulate the main field current in response to these signals. The main field current is modulated to achieve constant desired voltage, constant desired frequency, and desired phase shift between the output channels.
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Abstract
Description
- Reference is made to application Ser. No. 13/833,809, entitled “GENERATOR ARCHITECTURE WITH MAIN FIELD ROTATING POWER CONVERTER”, application Ser. No. 13/833,212, entitled “GENERATOR ARCHITECTURE WITH PMG EXCITER AND MAIN FIELD ROTATING POWER CONVERTER”, application Ser. No. 13/836,428, entitled “EPGS ARCHITECTURE WITH MULTI-CHANNEL SYNCHRONOUS GENERATOR AND COMMON FIELD REGULATED EXCITER”, application Ser. No. 13/836,255, entitled “METHOD OF CONTROLLING ROTATING MAIN FIELD CONVERTER”, and application Ser. No. 13/836,007, entitled “EPGS ARCHITECTURE WITH MULTI-CHANNEL SYNCHRONOUS GENERATOR AND COMMON UNREGULATED PMG EXCITER”, which are filed on even date herewith, are assigned to same assignee as this application, and which the entire disclosure off all above-reference applications hereby being incorporated by reference.
- The present inventive concept is related to generator architectures and in particular to generator architectures utilizing main field rotating power converters.
- In the simplest terms, generators convert mechanical energy to electrical energy via the interaction of rotating magnetic fields and coils of wire. A multitude of generator architectures have been developed with various means of providing interaction between magnetic fields and coils of wire. For example, a permanent magnet generator (PMG) utilizes permanent magnets to generate a constant magnetic field, which is rotated via the mechanical energy supplied by a prime mover such that the rotating magnetic field interacts with the stator coils to provide an output voltage. Another type of generator supplies current through a field coil to generate the desired magnetic field, which is rotated via the mechanical energy supplied by a prime mover, such that a rotating magnetic field is created that interacts with stator coils to provide an output voltage.
- In the former example, the output voltage supplied by the PMG depends only on the magnitude of the mechanical energy supplied by the prime mover. In the latter example, the output voltage of the generator can be regulated by varying the current supplied to the field coil. For applications in which the output voltage must be regulated, the latter example, known as a wound field synchronous machine, is widely utilized. A PMG is sometimes utilized in conjunction with the brushless wound field synchronous machine to source the current supplied to an exciter field winding to regulate the output of the wound field synchronous machine.
- For example, in aircraft applications, a typical variable frequency generator (VFG) includes a permanent magnet section, an exciter section, and a main generator section. The permanent magnet portion includes permanent magnets employed on the rotating portion, which generate an alternating current voltage on the stator portion. The AC voltage provided by the permanent magnet portion is rectified and selectively applied to the exciter winding on the stationary portion of the exciter. The exciter field current interacts with the rotating exciter armature windings to provide an AC voltage. A rotating rectifier rectifies the AC voltage and supplies the DC voltage to a main field winding on the rotating portion of the main generator section. Rotation of the motive power shaft and the main field winding induces three-phase AC output voltage on the generator armature winding. The magnitude of the AC generator output voltage is regulated by controlling the current supplied to the exciter field coil on the stationary portion of the exciter. The three-phase output voltage and frequency of the generator is subjected to the speed of motive power shaft. To achieve a three-phase constant frequency and constant voltage power, a three-phase dc link inverter is employed between the generator output and the load. This type of an electric power generating system is commonly known as a variable speed constant frequency (VSCF) system. However, conventional (VSCF) have a reduced power density and do not provide a means of controlling the generating system to control the power density.
- A generator system comprises a generator having a stationary portion and a rotating portion, a number of identical output channels and a control unit. The generator comprises an exciter field, a rotating power supply, and a number of identical generator channels. The exciter field winding is disposed on the stationary portion. The rotating power supply disposed on the rotating portion and comprises of a three-phase exciter armature winding connected to a 6-pulse rectifier, and a dc bus capacitor. Each generator channel comprises a control transformer primary winding disposed on the stationary portion, a main field winding disposed on the rotating portion, a main field power converter disposed on the rotating portion that delivers modulated dc power from the rotating power supply, a center-tap single phase armature winding disposed on the stationary portion to produce dc modulated power. Output channel comprises of a set of two bidirectional switches connected to the generating channel outputs of the single phase armature winding and alternatively controlled to provide alternative power at desired frequency. Each output channel further includes an output filter connected to the bidirectional switches via interface inductors. Each generating channel yet further includes control transformer secondary windings and a set of gate drives disposed on the rotating portion and communicating control signals to the main field power converter switches to provide desired frequency at the load. The generator system further includes a variable speed constant frequency control unit (VSCFCU) in electrical communication with the generator and output channels. The VSCFCU is configured to generate the control signals based on the output phase voltage and output filter capacitor current to provide n-phase constant voltage constant frequency ac power at the load
- These and other features of the present invention can be best understood from the following specification and drawing, the following of which is a brief description.
-
FIG. 1 is a circuit diagram of an electric power generation and distribution system including a variable speed constant frequency unit according to an embodiment of the present invention. -
FIG. 1 is a circuit diagram of electricpower generating system 50 according to an embodiment of the present inventive concept.System 50 includes agenerator 52 and a variable speed constant frequency control unit (VSCFCU) 54. In at least one embodiment illustrated inFIG. 1 , the generator is amulti-channel generator 52, which includes a plurality of channels. Aswitching unit 56 may be connected to the output of each channel of themulti-channel generator 52 to provide a desired frequency and phase at theload 57. Eachswitching unit 56 includes a pair ofbi-directional switches output filter 62, such as an LC filter, is connected to the output of eachswitching unit 56 via a set ofinterface inductors 64 to filter out a high frequency component. Phase voltage, e.g., voltage acrossfilter capacitor 66, and capacitor current delivered by thecurrent sensor 68 are fed back to theVSCFCU 54. The VSCFCU 54 may be in connection with eachswitching unit 56 to control each respective pair ofbi-directional switches VSCFCU 54 may control the modulation of the output voltage at each channel based on the feedback phase voltage and capacitor current (Icx).Current sensor 68 may be coupled to the output of eachfilter 62 to provide Icx to the VSCFCU 54. -
Generator 52 includesstationary portion 70 and rotatingportion 72.Generator 52 includes a controlled rotating DC power supply and a number of generator channels. The amount of channels included in thesystem 50 may include, but are not limited to, 1 channel, 2 channels, 3 channels, etc. An example of a three-channel system is illustrated inFIG. 1 , which may generate a three-phase AC output with 120° degrees with respect to the three channels (phases). Although only a single channel will be described from here on out, it is appreciated that all the channels included in thesystem 50, for example all three channels, operate in a similar manner. - A stationary part of each generating channel includes a center-tap single-phase main armature winding 74, and a
primary winding 76 disposed on thestationary portion 70. A rotating part of each generating channel includes a channel main field winding 78, a main field rotatingpower converter 80, andsecondary control windings respective gate drives 86 and 88. The rotating part of the each channel is disposed on the rotatingportion 72 of thegenerator 52. - The generator includes a controlled rotating power supply having a stationary part and a rotating part. The stationary part includes an exciter field winding 90 disposed on the
stationary portion 70 of thegenerator 52. The rotating part includes a three-phase exciter armature winding 92 connected to a 6-pulse rotating rectifier 94, and a DC bus capacitor CdcR, all of which are disposed on the stationary rotatingportion 72 of thegenerator 52. The AC power supplied by the exciter armature winding 92 is converted into a DC power by the rotatingrectifier 94. The main field rotatingpower converter 80 selectively delivers the rectified DC power at the rotating DC bus to the channel main field winding 78. The rotatingportion 72 further includes the hi-side gate driver 86 and the lo-side gate driver 88. The hi-side gate driver 86, a lo-side gate driver 88 may selectively be controlled by theVSCFCU 54 to output the signals that to selectively control a respective main field rotatingpower converter 80. - In the embodiment shown in
FIG. 1 , each channel main field rotatingpower converter 80 includes a high-side switch T1 r, a low-side switch T2 r, and diodes D1 r and D2 r. By controlling the high-side/low-side switches T1 r, T2 r via a control signal sent by a respective hi-side gate driver 86/a lo-side gate driver 88, each individual channel may be independently controlled. For example, when switches T1 r and T2 r of the main field rotatingpower converter 80 are both turned On, then the positive DC voltage provided by the rotating DC bus is applied to the respective channel main field winding 78 and allows current to build up in the respective channel main field winding 78. In particular, a conductive current path is created from the rotating DC bus through switch T1 r to the respective channel main field winding 78 and then through switch T2 r. By keeping one of the switch (T2 r) On and pulse-width modulating switch T1 r the current in the channel main field winding 78 is modulated. When T1 r is On the voltage across the main field winding 78 (which is equal to the rotating DC bus voltage), and main field current increases. When T1 r is Off the main field current circulates through T2 r and D2 r and decreases. The voltage across the main field winding 78 is near zero. In order to balance switching losses between T1 r and T2 r switches, the operating mode of the switches can be alternating: T2 r switch is closed, while T1 r is in PWM mode for a period of time, and then T2 r switch is in PWM mode, while T1 r is closed for the same period of time, and so on. When switches T1 r and T2 r of the main field rotatingpower converter 80 are both Off, then current flows through diodes D1 r and D2 r and voltage across the channel main field winding 78 equals negative rotating DC bus voltage forcing current stored in the main field winding 78 to rapidly decrease to zero. The negative energy is fed back to the rotating DC power supply. - The pair of
bi-directional switches unit 56 alternate a modulated DC power to achieve a balanced AC output at the desired frequency. In at least one embodiment illustrated inFIG. 1 , each channel single phase main armature winding 74 is formed as a center-tapped winding having the center connected to a neutral potential point, (e.g., ground) to define an upper-half winding and a lower-half winding. Each switchingunit 56 includes a firstbidirectional switch 58 and a secondbidirectional switch 60. The firstbidirectional switch 58 is connected to the upper winding of a respective main armature winding 74 and the secondbidirectional switch 60 is connected to the lower winding. Accordingly, the first and secondbidirectional switches FIG. 1 , eachbidirectional switch bidirectional switches respective LC filter 62 viainterface inductors 64 to reduce circulating current during IGBT switches commutation. TheLC filter 62 filters out the high frequency components from the modulated signal output from the respectivebidirectional switches - The
VSCFCU 54 monitors the current supplied to exciter field winding 90 and the phase voltage at the output of one or more of the channels via the feedback phase voltage. Accordingly, theVSCFCU 54 may regulate the current supplied to exciter field winding 90 to maintain constant generator system output voltage. In another embodiment, the exciter current supplied to the exciter field winding 90 may be controlled to obtain near speed independent voltage at the rotating DC bus. - In addition, the
VSCFCU 54 may modulate the current applied to the generator channelprimary windings 76, thereby modulating the current realized at the respective main field winding 74. More specifically, theVSCFCU 54 receives the feedback phase voltage and capacitive current signals (Icx) and may modulate the main field current in response to these signals. The main field current is modulated to achieve constant desired voltage, constant desired frequency, and desired phase shift between the output channels. - While the present inventive concept has been described with reference to an exemplary embodiment(s), it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the present general inventive concept not be limited to the particular embodiment(s) disclosed, but that the present general inventive concept will include all embodiments falling within the scope of the appended claims.
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US13/835,089 US8836293B1 (en) | 2013-03-15 | 2013-03-15 | Variable speed constant frequency system with generator and rotating power converter |
EP14159222.0A EP2779428B1 (en) | 2013-03-15 | 2014-03-12 | Variable speed constant frequency system with generator and rotating power converter |
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US13/835,089 US8836293B1 (en) | 2013-03-15 | 2013-03-15 | Variable speed constant frequency system with generator and rotating power converter |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130049366A1 (en) * | 2011-08-31 | 2013-02-28 | Hamilton Sundstrand Corporation | Mixed mode power generation architecture |
US10547259B1 (en) * | 2018-08-03 | 2020-01-28 | Hamilton Sundstrand Corporation | Electric generating system with an interleaved DC-DC converter |
US10651770B2 (en) | 2018-08-29 | 2020-05-12 | Hamilton Sundstrand Corporation | Direct current voltage regulation of a six-phase permanent magnet generator |
US10778127B2 (en) * | 2018-09-10 | 2020-09-15 | Hamilton Sundstrand Corporation | Direct current voltage regulation of permanent magnet generator |
US10855216B2 (en) | 2018-09-10 | 2020-12-01 | Hamilton Sundstrand Corporation | Voltage regulation of multi-phase permanent magnet generator |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9525376B2 (en) * | 2014-05-13 | 2016-12-20 | Gbox, Llc | Wound field synchronous machine with resonant field exciter |
US9998047B2 (en) | 2015-01-16 | 2018-06-12 | Hamilton Sundstrand Corporation | Synchronous machine with rechargeable power storage devices |
US9660563B2 (en) | 2015-06-19 | 2017-05-23 | Hamilton Sundstrand Corporation | High voltage direct current system with improved generator excitation |
US9548691B1 (en) | 2015-06-24 | 2017-01-17 | Hamilton Sundstrand Corporation | Variable speed constant frequency power generator including permanent magnet exciter |
US10003186B2 (en) | 2016-06-15 | 2018-06-19 | Hamilton Sundstrand Corporation | Variable-speed constant-frequency power control |
CN108233747B (en) * | 2016-12-16 | 2020-12-04 | 台达电子企业管理(上海)有限公司 | Modular power supply system |
US11283382B1 (en) | 2020-12-29 | 2022-03-22 | Hamilton Sundstrand Corporation | Sensorless current determination in variable speed constant frequency (VSCF) generator control system |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3671850A (en) * | 1970-11-19 | 1972-06-20 | Walter E Mehnert | Electric generator control system with radio feedback loop |
JPS6430500A (en) * | 1987-07-24 | 1989-02-01 | Shinko Electric Co Ltd | Brushless starting generator exciter |
US5153498A (en) | 1989-11-07 | 1992-10-06 | Sundstrand Corporation | Generic control unit |
US5055765A (en) | 1990-09-04 | 1991-10-08 | Sundstrand Corporation | Voltage regulator for direct current aircraft power bus |
US5363032A (en) * | 1993-05-12 | 1994-11-08 | Sundstrand Corporation | Sensorless start of synchronous machine |
US5764036A (en) * | 1995-03-08 | 1998-06-09 | Sundstrand Corporation | Multiple output decoupled synchronous generator and electrical system employing same |
US6281664B1 (en) | 1999-01-13 | 2001-08-28 | Honda Giken Kogyo Kabushiki Kaisha | Generator and generator apparatus |
US7053590B2 (en) * | 2004-08-24 | 2006-05-30 | Elliott Energy Systems, Inc. | Power generating system including a high-frequency alternator, a rectifier module, and an auxiliary power supply |
US7196498B2 (en) | 2004-09-08 | 2007-03-27 | Honeywell International Inc. | Method and apparatus for generator control |
US7064524B2 (en) | 2004-09-08 | 2006-06-20 | Honeywell International Inc. | Method and apparatus for generator control |
US7439713B2 (en) | 2006-09-20 | 2008-10-21 | Pratt & Whitney Canada Corp. | Modulation control of power generation system |
US8237416B2 (en) * | 2008-12-09 | 2012-08-07 | Hamilton Sundstrand Corporation | More electric engine with regulated permanent magnet machines |
US8299762B2 (en) * | 2009-06-05 | 2012-10-30 | Hamilton Sundstrand Corporation | Starting/generating system with multi-functional circuit breaker |
US8358111B2 (en) * | 2009-12-03 | 2013-01-22 | Hamilton Sundstrand Corporation | Architecture for dual source electric power generating system |
US8699251B2 (en) | 2012-04-24 | 2014-04-15 | Hamilton Sundstrand Corporation | Direct current generating, management and distribution system |
-
2013
- 2013-03-15 US US13/835,089 patent/US8836293B1/en active Active
-
2014
- 2014-03-12 EP EP14159222.0A patent/EP2779428B1/en active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130049366A1 (en) * | 2011-08-31 | 2013-02-28 | Hamilton Sundstrand Corporation | Mixed mode power generation architecture |
US8928166B2 (en) * | 2011-08-31 | 2015-01-06 | Hamilton Sundstrand Corporation | Mixed mode power generation architecture |
US10547259B1 (en) * | 2018-08-03 | 2020-01-28 | Hamilton Sundstrand Corporation | Electric generating system with an interleaved DC-DC converter |
US10651770B2 (en) | 2018-08-29 | 2020-05-12 | Hamilton Sundstrand Corporation | Direct current voltage regulation of a six-phase permanent magnet generator |
US10778127B2 (en) * | 2018-09-10 | 2020-09-15 | Hamilton Sundstrand Corporation | Direct current voltage regulation of permanent magnet generator |
US10855216B2 (en) | 2018-09-10 | 2020-12-01 | Hamilton Sundstrand Corporation | Voltage regulation of multi-phase permanent magnet generator |
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EP2779428A3 (en) | 2017-01-04 |
EP2779428B1 (en) | 2019-09-04 |
EP2779428A2 (en) | 2014-09-17 |
US8836293B1 (en) | 2014-09-16 |
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