Method for identifying the existence of a failure, method for identifying a failed relay device, method for identifying the type of failure and associated power supply system
First Claim
1. An identification method for a failure of a relay device in an electrical power supply system of an apparatus to be supplied with power, the power supply system comprising at least one power generator configured to generate a power signal and a load connected to an output of the power generator, the load comprising at least one relay device;
- the power generator comprising a variable-frequency drive;
a processor configured to instruct the variable-frequency drive to generate the power signal at a given frequency;
the relay device comprising at least one passive quadripole and at least one antenna connected to the at least one passive quadripole wherein the identification method comprises the following steps;
a) selecting a characteristic frequency of the power signal by the processor;
b) generating the power signal by the variable-frequency drive at the characteristic frequency provided by the processor;
c) measuring values representative of voltages of the power signal before and after a reference load;
d) based on measuring the voltages, determining an impedance of the load at the output of the power generator at the selected characteristic frequency by the processor;
e) repeating steps a)-d) for several characteristic frequencies that are distinct from one another; and
f) identifying the failure from several impedances determined for corresponding different characteristic frequencies;
the identification step comprising a step of comparing the impedance determined at a given characteristic frequency with at least one threshold, and the at least one threshold being specific to the given characteristic frequency.
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Abstract
A method for identifying the existence of a failure of a relay device in an electrical power supply system of a device to be supplied with power, the power supply system comprising at least one power generator configured to generate a power supply signal and a load comprising at least one relay device; the power generator comprising a frequency variator; each relay device comprising a quadripole and at least one antenna linked to the quadripole. The identification method comprises the following steps: a) selecting a characteristic frequency, b) determining the impedance of the load, then when the supply signal has the selected characteristic frequency, c) repeating steps a) and b) for several distinct characteristic frequencies, d) identifying the existence of a failure from several impedances determined for different characteristic frequencies.
13 Citations
11 Claims
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1. An identification method for a failure of a relay device in an electrical power supply system of an apparatus to be supplied with power, the power supply system comprising at least one power generator configured to generate a power signal and a load connected to an output of the power generator, the load comprising at least one relay device;
- the power generator comprising a variable-frequency drive;
a processor configured to instruct the variable-frequency drive to generate the power signal at a given frequency;
the relay device comprising at least one passive quadripole and at least one antenna connected to the at least one passive quadripole wherein the identification method comprises the following steps;a) selecting a characteristic frequency of the power signal by the processor; b) generating the power signal by the variable-frequency drive at the characteristic frequency provided by the processor; c) measuring values representative of voltages of the power signal before and after a reference load; d) based on measuring the voltages, determining an impedance of the load at the output of the power generator at the selected characteristic frequency by the processor; e) repeating steps a)-d) for several characteristic frequencies that are distinct from one another; and f) identifying the failure from several impedances determined for corresponding different characteristic frequencies; the identification step comprising a step of comparing the impedance determined at a given characteristic frequency with at least one threshold, and the at least one threshold being specific to the given characteristic frequency. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
- the power generator comprising a variable-frequency drive;
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2. A method for identifying a failed relay device in an electrical power supply system of an apparatus to be supplied with power, the power supply system comprising at least one power generator configured to generate a power signal and a load connected to an output of the power generator, the load comprising at least two relay devices;
- the power generator comprising a variable-frequency drive;
a processor configured to instruct the variable-frequency drive to generate the power signal at a given frequency;
each relay device comprising at least one passive quadripole and at least one antenna connected to the at least one passive quadripole;
wherein the method comprises the following steps;a) selecting a characteristic frequency of the power signal by the processor; b) generating the power signal by the variable-frequency drive at the characteristic frequency provided by the processor; c) measuring values representative of voltages of the power signal before and after a reference load; d) based on measuring the voltages, determining an impedance of the load at the output of the power generator at the selected characteristic frequency by the processor; e) repeating steps a)-d) for several characteristic frequencies that are distinct from one another; and f) identifying the failed relay device from several impedances determined for corresponding different characteristic frequencies; the identification step comprising a step of comparing the impedance determined at a given characteristic frequency with at least one threshold, and the at least one threshold being specific to the given characteristic frequency.
- the power generator comprising a variable-frequency drive;
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3. An identification method for a type of failure of a relay device in an electrical power supply system of an apparatus to be supplied with power, the power supply system comprising at least one power generator configured to generate a power signal and a load connected to an output of the power generator, the load comprising at least one relay device;
- the power generator comprising a variable-frequency drive;
a processor configured to instruct the variable-frequency drive to generate the power signal at a given frequency;
the relay device comprising at least one passive quadripole and at least one antenna connected to the at least one passive quadripole;
wherein the identification method comprises the following steps;a) selecting a characteristic frequency of the power signal by the processor; b) generating the power signal by the variable-frequency drive at the characteristic frequency provided by the processor; c) measuring values representative of voltages of the power signal before and after a reference load; d) based on measuring the voltages, determining an impedance of the load at the output of the power generator at the selected characteristic frequency by the processor; e) repeating steps a)-d) for several characteristic frequencies that are distinct from one another; and f) identifying the type of failure of the relay device from several impedances determined for different characteristic frequencies; the identification step comprising a step of comparing the impedance determined at a given characteristic frequency with at least one threshold, the at least one threshold being specific to the given characteristic frequency.
- the power generator comprising a variable-frequency drive;
Specification