Asynchronous motor unit comprising a frequency converter with electrical isolation in the DC voltage intermediate circuit
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02P-027/04
H02M-005/458
H02M-005/22
H02M-007/5387
H02P-027/06
출원번호
US-0363744
(2012-12-07)
등록번호
US-9344029
(2016-05-17)
우선권정보
EP-11192287 (2011-12-07)
국제출원번호
PCT/EP2012/074758
(2012-12-07)
국제공개번호
WO2013/083761
(2013-06-13)
발명자
/ 주소
Kleinodt, Ralf
Gehlert, Uwe
출원인 / 주소
KD ELEKTRONIKSYSTEME GMBH
대리인 / 주소
Williams, Karin L.
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
The invention relates to an asynchronous motor unit including a frequency converter for regulating the asynchronous motor. The frequency converter comprises an input-side, uncontrolled bridge rectifier, a DC voltage intermediate circuit and an output-side inverter. According to the invention, the DC
The invention relates to an asynchronous motor unit including a frequency converter for regulating the asynchronous motor. The frequency converter comprises an input-side, uncontrolled bridge rectifier, a DC voltage intermediate circuit and an output-side inverter. According to the invention, the DC voltage intermediate circuit furthermore comprises a DC-to-DC converter with galvanic isolation, with the result that electrical isolation between the bridge rectifier and the inverter is produced.
대표청구항▼
1. An asynchronous motor unit comprising an asynchronous motor and a frequency converter, wherein the frequency converter has an input-side uncontrolled bridge rectifier, a DC voltage intermediate circuit, and an output-side inverter, characterized in that the DC voltage intermediate circuit compris
1. An asynchronous motor unit comprising an asynchronous motor and a frequency converter, wherein the frequency converter has an input-side uncontrolled bridge rectifier, a DC voltage intermediate circuit, and an output-side inverter, characterized in that the DC voltage intermediate circuit comprises a DC to DC converter with electrical isolation, which provides a potential separation between the bridge rectifier and the inverter; wherein the electrical isolation is formed by a high frequency transformer, which comprises at least one primary winding and one secondary winding. 2. The asynchronous motor unit according to claim 1, wherein the secondary winding has a middle tapping point. 3. The asynchronous motor unit according to claim 1, wherein the DC to DC converter-is a push-pull converter which has a half-bridge actuation and midpoint circuit at its output. 4. The asynchronous motor unit according claim 1, wherein a brake chopper circuit is provided in the DC voltage intermediate circuit. 5. The asynchronous motor unit according to claim 1, wherein the frequency converter furthermore comprises an output-side sine wave filter and an output-side du/dt filter. 6. The asynchronous motor unit according to claim 1, wherein the frequency converter is designed to regulate the asynchronous motor unit, wherein the bridge rectifier is an uncontrolled bridge rectifier. 7. The asynchronous motor unit according to claim 1, wherein the frequency converter is designed to regulate the asynchronous motor unit, wherein the secondary winding preferably has a middle tapping point. 8. The asynchronous motor unit according to claim 1, wherein the frequency converter is designed to regulate the asynchronous motor unit, wherein the DC to DC converter is a push-pull converter. 9. The asynchronous motor unit according to claim 1, wherein the frequency converter is designed to regulate the asynchronous motor unit, wherein the push-pull converter comprises a half-bridge actuation. 10. The asynchronous motor unit according to claim 1, wherein the frequency converter is designed to regulate the asynchronous motor unit, wherein the push-pull converter has a midpoint circuit at its output. 11. The asynchronous motor unit according to claim 1, further comprising a brake chopper circuit in the intermediate circuit. 12. The asynchronous motor unit according to claim 1, further comprising an output-side sine wave filter. 13. A frequency converter suitable to regulating an asynchronous motor, comprising an input-side bridge rectifier, a DC voltage intermediate circuit, and an output-side inverter, wherein the DC voltage intermediate circuit comprises a DC to DC converter with electrical isolation, which provides a potential separation between the bridge rectifier and the inverter, wherein the bridge rectifier is an uncontrolled bridge rectifier, wherein the electrical isolation is formed by a high frequency transformer, which comprises at least one primary winding and one secondary winding. 14. The frequency converter according to claim 13, wherein the secondary winding has a middle tapping point. 15. The frequency converter according to claim 13, wherein the DC to DC converter is a push-pull converter. 16. The frequency converter according to claim 15, wherein the push-pull converter comprises a half-bridge actuation. 17. The frequency converter according to claim 15, wherein the push-pull converter has a midpoint circuit at its output. 18. The frequency converter according to claim 13, further comprising a brake chopper circuit in the intermediate circuit. 19. The frequency converter according to claim 13, further comprising an output-side sine wave filter. 20. The frequency converter according to claim 13, further comprising an output-side du/dt filter.
Lee,Kevin; Ahlgren,Jyrki K.; Wallace,Ian T.; Doring,Thomas M., System and method of controlling the start-up of an adjustable speed motor drive based sinusoidal output power conditioner.
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