Inductive systems for non-contact transmission of electrical energy
First Claim
1. An inductive rotary joint for non-contact transmission of electrical energy between a stationary part and a rotating part of the rotary joint, comprising:
- a power generator disposed on the stationary part for generating an alternating voltage or an alternating current;
an inductive power transmitter comprising a primary side disposed on the stationary part and a secondary side disposed on the rotating part, in which the primary side is fed by the power generator and the secondary side feeds a load;
a measurement means disposed on the stationary part and operationally coupled between the power generator and the primary side of the inductive power transmitter for determining at least one electrical parameter selected from a group comprising;
a voltage, a current, and a phase angle of electrical energy fed by the power generator into the primary side of the power transmitter; and
a unit disposed on the stationary part and operationally coupled between the measurement means and the power generator for controlling the power generator with the aid of the at least one measured electrical parameter, so that at least one other electrical parameter on the load is maintained approximately constant, wherein the at least one other electrical parameter is selected from a group comprising a voltage, a current, and a phase angle of the electrical energy fed onto the load, and wherein the unit comprises a computer readable medium with a model for simulating a relationship between the at least one other electrical parameter on the load and the at least one electrical parameter on the primary side of the power transmitter.
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Accused Products
Abstract
An inductive rotary joint for non-contact transmission of electrical energy between a stationary part and a rotating part of the rotary joint comprises a power generator for generating an alternating voltage or an alternating current, which feeds a load by means of a rotatable power transmitter. An electrical parameter on the primary side of the power transmitter is determined with a measurement means, and from this, the condition of another electrical parameter at the load is approximated by means of a functional unit. Regulation of the power generator is effected with this approximated value.
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Citations
20 Claims
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1. An inductive rotary joint for non-contact transmission of electrical energy between a stationary part and a rotating part of the rotary joint, comprising:
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a power generator disposed on the stationary part for generating an alternating voltage or an alternating current; an inductive power transmitter comprising a primary side disposed on the stationary part and a secondary side disposed on the rotating part, in which the primary side is fed by the power generator and the secondary side feeds a load; a measurement means disposed on the stationary part and operationally coupled between the power generator and the primary side of the inductive power transmitter for determining at least one electrical parameter selected from a group comprising;
a voltage, a current, and a phase angle of electrical energy fed by the power generator into the primary side of the power transmitter; anda unit disposed on the stationary part and operationally coupled between the measurement means and the power generator for controlling the power generator with the aid of the at least one measured electrical parameter, so that at least one other electrical parameter on the load is maintained approximately constant, wherein the at least one other electrical parameter is selected from a group comprising a voltage, a current, and a phase angle of the electrical energy fed onto the load, and wherein the unit comprises a computer readable medium with a model for simulating a relationship between the at least one other electrical parameter on the load and the at least one electrical parameter on the primary side of the power transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A computer tomograph comprising:
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a rotating part for accommodating an X-ray tube and a detector; a stationary part for rotatably supporting the rotating part; a power generator disposed on the stationary part forgenerating an alternating voltage or an alternating current; an inductive power transmitter comprising a primary side disposed on the stationary part and a secondary side disposed on the rotating part, in which the primary side is fed by the power generator and the secondary side feeds the X-ray tube; a measurement means disposed on the stationary part and operationally coupled between the power generator and the primary side of the inductive power transmitter for determining at least one electrical parameter selected from a group comprising;
a voltage, a current, and a phase angle of electrical energy fed by the power generator into the primary side of the power transmitter; anda unit disposed on the stationary part and operationally coupled between the measurement means and the power generator for controlling the power generator with the aid of the at least one measured electrical parameter, so that at least one other electrical parameter on the load is maintained approximately constant, wherein the at least one other electrical parameter is selected from a group comprising a voltage, a current, and a phase angle of the electrical energy fed onto the load, and wherein the unit comprises a computer readable medium with a model for simulating a relationship between the at least one other electrical parameter on the load and the at least one electrical parameter on the primary side of the power transmitter. - View Dependent Claims (17)
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18. A system, comprising:
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a first part comprising a power generator for generating an alternating voltage or an alternating current; a second part spaced apart from the first part, wherein at least one of the first and second parts is moveable during operation of the system; an inductive power transmitter comprising a primary side disposed on the first part and a secondary side disposed on the second part, in which the primary side is fed by the power generator and the secondary side feeds a load; a measurement means disposed on the first part and operationally coupled between the power generator and the primary side of the inductive power transmitter for determining at least one electrical parameter selected from a group comprising; a voltage, a current, and a phase angle of electrical energy fed by the power generator into the primary side of the power transmitter; and a unit disposed on the second part and operationally coupled between the measurement means and the power generator for controlling the power generator with the aid of the at least one measured electrical parameter, so that at least one other electrical parameter on the load is maintained approximately constant, wherein the at least one other electrical parameter.is selected from a group comprising a voltage, a current, and a phase angle of the electrical energy fed onto the load, and wherein the unit comprises a computer readable medium with a model for simulating a relationship between the at least one other electrical parameter on the load and the at least one electrical parameter on the primary side of the power transmitter. - View Dependent Claims (19, 20)
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Specification