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US 11,374,501 B1Granted
Phase balancer including power conversion circuits
AssigneeProduct Development Associates, Inc.
InventorChristopher Paul Henze
Life of this patent
Estimating the term…
Abstract
A phase balancer includes a plurality of power conversion circuits, a direct current transformer, and a plurality of phase-nodes. Each of the power conversion circuits may include a throughput, a capacitor bank, and a direct current bus. The direct current transformer may be coupled to each of the direct current buses to move energy between the power conversion circuits. Each throughput may be operatively coupled to the capacitor bank of one power conversion circuit and the throughput of another power conversion circuit to move current between the plurality of power conversion circuits.
Claims32
A phase balancer comprising:
- a plurality of power conversion circuits, each of the plurality of power conversion circuits comprising:
- a throughput;
- an inductive circuit operatively coupled to the throughput;
- a capacitor bank operatively coupled to the inductive circuit;
- and
- a direct current bus operatively coupled to the capacitor bank;
- a direct current transformer operatively coupled to the direct current bus of each of the plurality of power conversion circuits to move energy between the plurality of power conversion circuits;
- a plurality of phase-nodes, each phase-node operatively coupled to the capacitor bank of one of the plurality of power conversion circuits and the throughput of another of the plurality of power conversion circuits to move current between the plurality of power conversion circuits, each phase-node of the plurality of phase-nodes operatively couplable to a corresponding one of a plurality of phases of a multi-phase power source;
- a current injector to provide current to each throughput of the plurality of power conversion circuits;
- and
- a controller comprising one or more processors and operatively coupled to the plurality of power conversion circuits and the current injector, the controller configured to:
- determine a current of each of the plurality of phases;
- and
- adjust the current supplied to each throughput of the plurality of power conversion circuits by the current injector based on the determined current of each of the plurality of phases.
11 more elements
A method comprising:
- moving energy between a plurality of power conversion circuits using a direct current transformer operatively coupled to a direct current bus of each of the plurality of power conversion circuits;
- moving current between the plurality of power conversion circuits using a plurality of phase-nodes, each phase-node operatively coupled between a capacitor bank of one of the plurality of power conversion circuits and a throughput of another of the plurality of power conversion circuits, each phase-node of the plurality of phase-nodes operatively couplable to a corresponding one of a plurality of phases of a multi-phase power source;
- providing current to each throughput of the plurality of power conversion circuits using a current injector;
- determining a current of each of the plurality of phases using a controller comprising one or more processors and operatively coupled to the plurality of power conversion circuits and the current injector;
- and
- adjusting the current supplied to each throughput of the plurality of power conversion circuits by the current injector based on the determined current of each of the plurality of phases.
3 more elements
A phase balancer comprising:
- a plurality of power conversion circuits, each of the plurality of power conversion circuits comprising:
- a throughput;
- an inductive circuit operatively coupled to the throughput;
- a capacitor bank operatively coupled to the inductive circuit, the capacitor bank comprising:
- a positive node;
- a neutral node;
- and
- a negative node;
- an H-bridge operably coupled to the positive and negative nodes of the capacitor bank;
- a direct current transformer operably coupled to the H-bridge of each of the plurality of power conversion circuits;
- a plurality of phase-nodes, each phase-node operatively coupled between the neutral node of the capacitor bank of one of the plurality of power conversion circuits and the throughput of another of the plurality of power conversion circuits, each phase-node of the plurality of phase-nodes operatively couplable to a corresponding one of a plurality of phases of a multi-phase power source;
- a current injector to provide current to each throughput of the plurality of power conversion circuits;
- and
- a controller comprising one or more processors and operatively coupled to the plurality of power conversion circuits and the current injector, the controller configured to:
- determine a current of each of the plurality of phases;
- and
- adjust the current supplied to each throughput of the plurality of power conversion circuits by the current injector based on the determined current of each of the plurality of phases.
14 more elements
A phase balancer comprising:
- a plurality of power conversion circuits, each of the plurality of power conversion circuits comprising:
- a throughput;
- an inductive circuit operatively coupled to the throughput;
- a capacitor bank operatively coupled to the inductive circuit;
- and
- a direct current bus operatively coupled to the capacitor bank;
- a direct current transformer operatively coupled to the direct current bus of each of the plurality of power conversion circuits to move energy between the plurality of power conversion circuits;
- a plurality of phase-nodes, each phase-node operatively coupled to the capacitor bank of one of the plurality of power conversion circuits and the throughput of another of the plurality of power conversion circuits to move current between the plurality of power conversion circuits, each phase-node of the plurality of phase-nodes operatively couplable to a corresponding one of a plurality of phases of a multi-phase power source;
- a current sensor to sense a load current of a load operatively coupled to one of the plurality of phases;
- and
- a controller comprising one or more processors and operatively coupled to the current sensor and configured to:
- determine a distortion current based on the sensed load current;
- and
- inject current into a phase-node of the plurality of phase-nodes based on the determined distortion current.
11 more elements
A method comprising:
- moving energy between a plurality of power conversion circuits using a direct current transformer operatively coupled to a direct current bus of each of the plurality of power conversion circuits;
- moving current between the plurality of power conversion circuits using a plurality of phase-nodes, each phase-node operatively coupled between a capacitor bank of one of the plurality of power conversion circuits and a throughput of another of the plurality of power conversion circuits, each phase-node of the plurality of phase-nodes operatively couplable to a corresponding one of a plurality of phases of a multi-phase power source;
- sensing a load current of a load using a current sensor;
- determining a distortion current based on the sensed load current using a controller comprising one or more processors and operatively coupled to the current sensor;
- and
- injecting current into a phase-node of the plurality of phase-nodes based on the determined distortion current using the controller.
3 more elements
Dependencies are inferred from the claim text.