Combination current hysteresis and voltage hysteresis control for a power converter
First Claim
1. A method of controlling an AC signal, the AC signal being supplied to a load and selectively supplied to a utility grid, wherein in response to a fault in the utility grid, the method comprising:
- decoupling the AC signal from the utility grid;
determining whether a voltage associated with the AC signal is within a desired band;
adjusting the voltage associated with the AC signal when the AC signal is outside the desired band;
comparing a magnitude of a current associated with the AC signal with a desired current value to thereby obtain a comparison result; and
adjusting the current associated with the AC signal in response to the comparison result when the voltage associated with the AC signal is within the desired band.
1 Assignment
0 Petitions
Accused Products
Abstract
Consistent with an aspect of the present disclosure, a method is provided for controlling an AC signal, which is supplied to a load and selectively supplied to a utility grid. In response to a fault in the utility grid, the method includes decoupling the AC signal from the utility grid, and determining whether a voltage associated with the AC signal is within a desired band. The method also includes adjusting the voltage associated with the AC signal when the AC signal is outside the desired band, and comparing a magnitude of a current associated with the AC signal with a desired current value to thereby obtain a comparison result. In response to the comparison result, the current associated with the AC signal is adjusted when the voltage associated with the AC signal is within the desired band.
-
Citations
31 Claims
-
1. A method of controlling an AC signal, the AC signal being supplied to a load and selectively supplied to a utility grid, wherein in response to a fault in the utility grid, the method comprising:
-
decoupling the AC signal from the utility grid;
determining whether a voltage associated with the AC signal is within a desired band;
adjusting the voltage associated with the AC signal when the AC signal is outside the desired band;
comparing a magnitude of a current associated with the AC signal with a desired current value to thereby obtain a comparison result; and
adjusting the current associated with the AC signal in response to the comparison result when the voltage associated with the AC signal is within the desired band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A power control system comprising:
-
an AC signal source, the AC signal source being coupled to a load, and generating an AC signal;
a switch circuit configured to selectively couple the AC signal source to a utility grid; and
a control circuit coupled to the AC signal source, wherein when a voltage associated with the AC signal is outside a desired band, the control circuit controls the switch circuit to decouple the AC signal source from the utility grid, and adjusts the current and voltage associated with the AC signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A power control system, comprising:
-
an inverter circuit configured receive a DC signal and supply an AC signal to a load;
a current transducer circuit configured to receive the AC signal and output a current sense signal in response to a current associated with the AC signal;
a voltage transducer circuit configured to receive the AC signal and output a voltage sense signal in response to a voltage associated with the AC signal;
a switch circuit configured to selectively supply the AC signal to a utility grid;
a pulse generating circuit configured to output a pulse signal in response to a utility AC signal present in the utility grid; and
a control circuit configured to receive the current sense signal, the voltage sense signal and the pulse signal, and output control signals to the inverter circuit in response thereto. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification