The invention relates to a power supply unit for supplying multiple conductor portions (3) of a stator winding of an electric machine which are inserted in respective slots (2), wherein the power supply unit is configured to supply a first conductor portion and a second conductor portion with at lea
The invention relates to a power supply unit for supplying multiple conductor portions (3) of a stator winding of an electric machine which are inserted in respective slots (2), wherein the power supply unit is configured to supply a first conductor portion and a second conductor portion with at least one different operating parameter of a respective current function and/or the power supply unit is configured to supply a conductor portion with at least two superimposed current functions, which in each case have at least one different operating parameter. Furthermore, the invention relates to an electric machine having such a power supply unit.
대표청구항▼
1. A power supply unit for supplying multiple conductor portions of a stator winding of an electric machine inserted in respective slots, wherein the power supply unit is configured to supply a first conductor portion and a second conductor portion with at least one different operating parameter of
1. A power supply unit for supplying multiple conductor portions of a stator winding of an electric machine inserted in respective slots, wherein the power supply unit is configured to supply a first conductor portion and a second conductor portion with at least one different operating parameter of a respective current function, and/orthe power supply unit is configured to supply a conductor portion with at least two superimposed current functions, which in each case have at last one different operating parameter. 2. The power supply unit according to claim 1, wherein the conductor portions each have a terminal connected to the power supply unit, and another terminal which is connected to a short circuit device, wherein the conductor portions are short-circuited to one another, orwhich is connected to another power supply unit. 3. The power supply unit according to claim 1 or 2, wherein the operating parameters include at least one of a pole pair number, frequency, phase position and amplitude. 4. The power supply unit according to claim 1, which includes a superposition of at least two pole pairs. 5. The power supply unit according to claim 4, wherein the current function comprises different amplitudes for different pole pairs. 6. The power supply unit according to claim 4 or 5, wherein the current function comprises different frequencies for different pole pairs. 7. The power supply unit according to claim 1, which uses synchronous and asynchronous portions for generation of torque at the same time. 8. The power supply unit according to claim 1, wherein the number of pole pairs is changeable during operation. 9. The power supply unit according to claim 1, wherein the number of active phases is changeable during operation. 10. The power supply unit according to claim 1 wherein the number of the actively supplied conductor portions is changeable during operation. 11. The power supply unit according to claim 1, which is configured to supply the conductor portions of the stator winding with a pattern of active phases, wherein said pattern may be fixed, alternating or rotating, or a combination thereof. 12. The power supply unit according to claim 1, which is configured to supply the conductor portions with asymmetric distributions of the magnetomotive force. 13. The power supply unit according to claim 1, which is configured to generate time-dependent current courses for supplying the conductor portions, which conform to the following function: IS,k(t)=∑i=p0pmax∑j=f0fmaxAi,j,k(t)·cos(2πjt-i(k-1)2πQs+φi,j,k(t))with Is,k(t) being the time-dependent current course, corresponding to the time-dependent current function in a conductor portion of the stator having consecutive numbering k,Ai,j,k(t) being the time-dependent amplitude of each spectral component of the conductor portion k, wherein the spectral component refers to a component of the current function for example in the case of a Fourier decomposition,j being the frequency of the spectral component; with fo being a first frequency and fmax being the maximum occurring frequency,i being the pole pair number of the spectral component; with po being a first pole pair number and pmax being the maximum occurring pole pair number,Qs being the number of slots in the stator and thus also the number of conductor portions in the stator, andφi,j,k(t) being the time-dependent phase angle of each spectral component of the conductor portion k. 14. An electric machine having a stator, comprising a power supply unit according to claim 1, wherein: the stator comprises a multitude of slots for accommodating the stator winding,in each case one conductor portion of the stator winding is inserted per slot,the conductor portions are each connected to a terminal of the power supply unit on a second side of the stator, andon a first side of the stator opposite the second side the conductor portions are short-circuited or connected to another power supply unit. 15. The electric machine according to claim 14, wherein each of the conductor portions inserted in the slots is straight. 16. The electric machine according to claim 14 or 15, wherein each of the conductor portions inserted in the slots include aluminum rods, cooper rods or bronze rods or alloys thereof.
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이 특허에 인용된 특허 (2)
Chapman John H., Multi-channel motor winding configuration and pulse width modulated controller.
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