Three-phase detection module
First Claim
1. A monitoring apparatus connected, in parallel with a motor, to a plurality of power supply lines, each of the plurality of power supply lines having a different phase, the monitoring apparatus comprising:
- a first isolator configured to, in response to a first control signal, selectively allow a first current to flow from a first power supply line of the plurality of power supply lines to a second power supply line of the plurality of power supply lines through a third isolator, wherein the first current is electrically isolated from the first control signal;
a second isolator configured to, in response to a second control signal, selectively allow a second current to flow from the second power supply line of the plurality of power supply lines to a third power supply line of the plurality of power supply lines through the third isolator, wherein the second current is electrically isolated from the second control signal; and
a control module configured to;
generate the first control signal to control the first isolator,generate the second control signal to control the second isolator,receive a first signal corresponding to a total current flowing through the third isolator, wherein the total current includes both the first current and the second current, andselectively generate a phase failure signal in response to the first signal indicating that a failure of at least one of the plurality of power supply lines has occurred.
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Accused Products
Abstract
A monitoring apparatus is connected, in parallel with a motor, to a plurality of power supply lines. Each of the power supply lines has a different phase. The monitoring apparatus includes a first isolator that selectively allows a first current to flow from a first power supply line to a second power supply line. A second isolator selectively allows a second current to flow from the second power supply line to a third power supply line. A control module controls the first isolator, controls the second isolator, and receives a first signal corresponding to a total current. The total current includes both the first current and the second current. The control module selectively generates a phase failure signal in response to the first signal indicating that a failure of at least one of the power supply lines has occurred.
68 Citations
27 Claims
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1. A monitoring apparatus connected, in parallel with a motor, to a plurality of power supply lines, each of the plurality of power supply lines having a different phase, the monitoring apparatus comprising:
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a first isolator configured to, in response to a first control signal, selectively allow a first current to flow from a first power supply line of the plurality of power supply lines to a second power supply line of the plurality of power supply lines through a third isolator, wherein the first current is electrically isolated from the first control signal; a second isolator configured to, in response to a second control signal, selectively allow a second current to flow from the second power supply line of the plurality of power supply lines to a third power supply line of the plurality of power supply lines through the third isolator, wherein the second current is electrically isolated from the second control signal; and a control module configured to; generate the first control signal to control the first isolator, generate the second control signal to control the second isolator, receive a first signal corresponding to a total current flowing through the third isolator, wherein the total current includes both the first current and the second current, and selectively generate a phase failure signal in response to the first signal indicating that a failure of at least one of the plurality of power supply lines has occurred. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of operating a monitoring apparatus connected, in parallel with a motor, to a plurality of power supply lines, each of the plurality of power supply lines having a different phase, the method comprising:
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generating a first control signal that selectively activates a first isolator to allow a first current to flow from a first power supply line of the plurality of power supply lines to a second power supply line of the plurality of power supply lines through a third isolator, wherein the first control signal is electrically isolated from the first current; generating a second control signal that selectively activates a second isolator to allow a second current to flow from the second power supply line of the plurality of power supply lines to a third power supply line of the plurality of power supply lines through the third isolator, wherein the second control signal is electrically isolated from the second current; receiving a first signal corresponding to a total current, wherein the total current includes both the first current and the second current flowing through the third isolator; and selectively generating a phase failure signal in response to the first signal indicating that a failure of at least one of the plurality of power supply lines has occurred. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification