Generator set with redundant bus sensing and automatic generator on-line control
First Claim
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1. A generator set controller which is connected with a three-phase power bus, including:
- a controller having at least one analog input and at least one digital input and at least one output, the analog input being connected with a first phase of the three-phase bus;
a dead bus sensor connected with the digital input, and a second and third phase of the bus and producing a live bus signal as a function of electrical characteristics of the second and third phase of the bus;
a breaker connected with said output and having an open and a closed position, the position of the breaker being controlled by a breaker signal produced by the controller at said output, the generator being connected with the bus when the breaker is in the closed position;
wherein the electronic controller issues a breaker signal causing the breaker to move to a closed position as said a function of signals received on said analog input and said digital input.
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Abstract
A generator set controller includes a dead bus sensor producing a dead bus signal indicative of a power failure on a power bus that is an input to the controller on a digital input channel. The controller also receives a voltage signal from a phase of a power bus.
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Citations
6 Claims
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1. A generator set controller which is connected with a three-phase power bus, including:
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a controller having at least one analog input and at least one digital input and at least one output, the analog input being connected with a first phase of the three-phase bus; a dead bus sensor connected with the digital input, and a second and third phase of the bus and producing a live bus signal as a function of electrical characteristics of the second and third phase of the bus; a breaker connected with said output and having an open and a closed position, the position of the breaker being controlled by a breaker signal produced by the controller at said output, the generator being connected with the bus when the breaker is in the closed position; wherein the electronic controller issues a breaker signal causing the breaker to move to a closed position as said a function of signals received on said analog input and said digital input. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling a generator connecting to a multi-phase power bus, said method including:
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sensing the magnitude of the voltage of a first phase of the power bus; determining whether a voltage difference between a second and third phase exceeds a predetermined level; and connecting said generator to said power bus in response to said steps of sensing and determining.
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Specification