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US 12,289,071 B2Granted
Induction machine with localized voltage unbalance compensation
AssigneeThe Florida State University Research Foundation, Inc.
InventorsThomas A. Lipo, Akihiro Imakiire
Life of this patent
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Abstract
An induction machine with localized voltage unbalance compensation is disclosed. The use of an induction machine with a voltage unbalance correction compensator (VUC) may be used to maintain proper working conditions of the machine during intervals of voltage unbalance.
Claims17
A system, comprising:
- an induction machine comprising a first input for receiving a three-phase voltage from a three-phase voltage source;
- and
- a voltage unbalance compensation device (VUC) connected in parallel with the induction machine, wherein the VUC is configured to:
- receive, at a second input, the three-phase voltage from the three-phase voltage source;
- determine a voltage unbalance between any of the three phases of the three-phase voltage;
- and
- output a second voltage to the second input of the induction machine, wherein the second voltage is supplemental to the three-phase voltage and compensates for the determined voltage unbalance in the three-phase voltage received at the first input from the three-phase voltage source.
4 more elements
A voltage unbalance compensation device comprising:
- a first input of the voltage unbalance compensation device connected to an output of a power source;
- an output connected to a first input of an induction machine, the induction machine comprising the first input and a second input, wherein the second input of the induction machine is also connected to the output of the power source;
- and
- a control circuit configured to:
- receive a voltage input from the power source, determine a voltage unbalance between a first phase of the voltage input and a second phase of the voltage input, and output a second voltage to the first input of the induction machine to compensate for a voltage unbalance in the voltage input that is also received at the second input of the induction machine.
2 more elements
A method for compensating for voltage unbalance comprising the steps of:
- receiving, by a voltage compensation device, an input voltage from a voltage source;
- determining a voltage unbalance of the input voltage;
- and
- providing an output voltage to a second input of an induction machine, wherein the output voltage is supplemental to the input voltage and compensates for the voltage unbalance in the input voltage, wherein the input voltage is also received from the voltage source at a first input of the induction machine.
1 more element
Dependencies are inferred from the claim text.