Electrical machine, method of controlling an electrical machine, and system including an electrical machine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02P-001/04
H02P-006/04
H02P-006/18
H02P-006/20
출원번호
US-0096537
(2011-04-28)
등록번호
US-8901867
(2014-12-02)
발명자
/ 주소
Mullin, Paul
출원인 / 주소
Regal Beloit America, Inc.
대리인 / 주소
Michael Best & Friedrich LLP
인용정보
피인용 횟수 :
2인용 특허 :
69
초록▼
A method of controlling an electrical machine. The electrical machine includes a stator having a core and a plurality of windings, and a rotor disposed adjacent to the stator to interact with the stator. The method includes detecting a movement of the rotor, generating a three phase alternating curr
A method of controlling an electrical machine. The electrical machine includes a stator having a core and a plurality of windings, and a rotor disposed adjacent to the stator to interact with the stator. The method includes detecting a movement of the rotor, generating a three phase alternating current (AC) voltage signal by all phases of the electrical machine, monitoring for a transfer speed of the electrical machine, discontinuing the three phase AC voltage signal when the transfer speed is traversed, and switching to a back electromotive force (BEMF) control mode after discontinuing the three phase AC voltage signal.
대표청구항▼
1. A method of controlling an electrical machine including a stator having a core and a plurality of windings, and a rotor disposed adjacent to the stator to interact with the stator, the method comprising: detecting a movement of the rotor;generating a three phase alternating current (AC) voltage s
1. A method of controlling an electrical machine including a stator having a core and a plurality of windings, and a rotor disposed adjacent to the stator to interact with the stator, the method comprising: detecting a movement of the rotor;generating a three phase alternating current (AC) voltage signal by all phases of the electrical machine;monitoring for a transfer speed of the electrical machine;discontinuing the three phase AC voltage signal when the transfer speed is traversed;switching to a back electromotive force (BEMF) control mode after discontinuing the three phase AC voltage signal. 2. The method of claim 1, wherein detecting movement of the rotor further includes detecting a rotational speed of the rotor. 3. The method of claim 1, wherein the three phase AC voltage signal provides an open loop ramp up of the electrical machine. 4. The method of claim 3, wherein the three phase AC voltage signal has a predetermined magnitude and frequency. 5. The method of claim 3, wherein the three phase AC voltage signal commutates the electrical machine from zero revolutions per minute (RPM) to the transfer speed. 6. The method of claim 1, wherein the transfer speed includes a predetermined speed. 7. The method of claim 6, wherein the transfer speed is about 300 RPM. 8. The method of claim 1, wherein the BEMF control mode is a closed loop control that receives feedback for the BEMF produced by the electrical machine. 9. The method of claim 1, wherein the electrical machine includes a permanent magnet, brushless direct current motor. 10. An electrical machine comprising: a stator having a core and a plurality of windings;a rotor disposed adjacent to the stator to interact with the stator;a memory; anda controller arranged to start the electrical machine, the controller configured to detect a movement of the rotor, generate a three phase alternating current (AC) voltage signal by all phases of the electrical machine,monitor for a transfer speed of the electrical machine,discontinue the three phase AC voltage signal when the transfer speed is traversed, andswitch to a back electromotive force (BEMF) control mode after the three phase AC voltage signal is discontinued. 11. The electrical machine of claim 10, wherein the three phase AC voltage signal provides an open loop ramp up of the electrical machine. 12. The electrical machine of claim 10, wherein the three phase AC voltage signal has a predetermined magnitude and frequency. 13. The electrical machine of claim 10, wherein three phase AC voltage signal commutates the electrical machine from zero RPM to the transfer speed. 14. An air movement system comprising: a system control board;a motor assembly including a stator having a core and a plurality of windings, anda rotor disposed adjacent to the stator to interact with the stator,a drive circuit coupled to the motor assembly and having a controller and a memory, the controller being configured to start the motor assembly, wherein starting includes detecting a movement of the rotor,generating a three phase alternating current (AC) voltage signal by all phases of the motor assembly,discontinuing the three phase AC voltage signal when the motor assembly traverses a transfer speed. 15. The air movement system of claim 14, wherein starting of the motor assembly further includes monitoring the transfer speed of the electrical machine. 16. The air movement system of claim 14, wherein starting of the motor assembly further includes switching to a back electromotive force (BEMF) control mode. 17. The air movement system of claim 14, wherein the air movement system further includes a thermostat. 18. The air movement system of claim 17, wherein the thermostat generates signals indicative of temperature requirements which can turn on the motor assembly. 19. The air movement system of claim 17, wherein the system control board relays signals generated by the thermostat to the motor assembly.
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