Method for providing a voltage for a load, and device for carrying out a method
AssigneeSew-Eurodrive GmbH & Co. KG
InventorsTorsten Epskamp, Frank Hartmann, Alexander Stahl, Christian Axtmann
Life of this patent
Estimating the term…
Abstract
In a method for providing a voltage for a load, e.g., for an inductor and/or coil of an electromagnetically actuable brake, e.g., of an electric motor, and device for carrying out the method, e.g., in a manner repeated over time, the positive half-wave of an, e.g., single-phase AC voltage is provided to the load in a pulse—with modulated manner starting from a first phase angle of the AC voltage, and in an unmodulated manner, e.g., and/or uncontrolled manner and/or directly, starting from a second phase angle.
Claims25
A method for providing a voltage for a load, comprising:
- providing positive half-waves of an AC voltage to the load in a pulse-width modulated manner starting from a first phase angle of the AC voltage and in an unmodulated manner starting from a second phase angle;
- and
- controlling a pulse—with modulation ratio as a function of time and/or of phase angle between the first phase angle and the second phase angle so that an increasing curve of the voltage and/or a curve of the voltage that increases from zero and is averaged using a moving average over a pulse—with modulation period is made available to the load.
A method for providing a voltage for a load, comprising:
- providing positive half-waves of an AC voltage to the load in a pulse-width modulated manner starting from a first phase angle of the AC voltage and in an unmodulated manner starting from a second phase angle, wherein the load includes an inductor and/or a coil of an electromagnetically actuable brake and/or an electromagnetically actuable brake of an electric motor;
- and
- controlling a pulse—with modulation ratio as a function of time and/or of phase angle between the first phase angle and the second phase angle so that an increasing curve of the voltage and/or a curve of the voltage that increases from zero and is averaged using a moving average over a pulse—with modulation period is made available to the load.
A method for providing a voltage for a load, comprising:
- providing positive half-waves of an AC voltage to the load in a pulse-width modulated manner starting from a first phase angle of the AC voltage and in an unmodulated manner starting from a second phase angle;
- wherein an actual value of current supplied to the load is captured and/or averaged over a period of the AC voltage, and the second phase angle is set to adjust the actual value to a target value of the current.
A method for providing a voltage for a load, comprising:
- providing positive half-waves of an AC voltage to the load in a pulse-width modulated manner starting from a first phase angle of the AC voltage and in an unmodulated manner starting from a second phase angle;
- wherein, in a respective period of the AC voltage, the first phase angle is determined and/or determined depending on the second phase angle of a respective period of the AC voltage, to have a predetermined and/or constant angular distance from the second phase angle.
A method for providing a voltage for a load, comprising:
- providing positive half-waves of an AC voltage to the load in a pulse-width modulated manner starting from a first phase angle of the AC voltage and in an unmodulated manner starting from a second phase angle;
- wherein the load includes an inductor and/or a coil of an electromagnetically actuable brake and/or an electromagnetically actuable brake of an electric motor;
- and
- wherein the AC voltage is captured and/or averaged over a period of the AC voltage, and, to release the brake, the second phase angle is controlled so that a target voltage of the coil applied to the coil is provided.
A method for providing a voltage for a load, comprising:
- providing positive half-waves of an AC voltage to the load in a pulse-width modulated manner starting from a first phase angle of the AC voltage and in an unmodulated manner starting from a second phase angle;
- wherein the load includes an inductor and/or a coil of an electromagnetically actuable brake and/or an electromagnetically actuable brake of an electric motor;
- and
- wherein a voltage applied to the coil is captured and/or averaged over a period of the AC voltage, and, to release the brake, the second phase angle is set so that the captured voltage is regulated to a target voltage value.
Dependencies are inferred from the claim text.