Autonomous two-layer predictive controller for bidirectional inductive power transfer in EV applications
First Claim
1. A two layer predictive controller for bidirectional inductive power transfer, comprising:
- a first layer controller generating a mutual inductance and a reference active power; and
a second layer controller receiving the mutual inductance and the reference active power, and generating a primary phase shift, a secondary phase shift, and a differential phase shift,the primary phase shift configured to manage a magnitude of an output voltage of a primary inverter,the secondary phase shift configured to manage a magnitude of an output voltage of a secondary inverter, andthe differential phase shift being a phase difference between the output voltage of the primary inverter and the output voltage of the secondary inverter.
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Accused Products
Abstract
A two layer predictive controller for bidirectional inductive power transfer can include: a first layer controller generating a mutual inductance and a reference active power; and a second layer controller receiving the mutual inductance and the reference active power, and generating a primary phase shift, a secondary phase shift, and a differential phase shift; the primary phase shift configured to manage a magnitude of an output voltage of a primary inverter; the secondary phase shift configured to manage a magnitude of an output voltage of a secondary inverter; and the differential phase shift being a phase difference between the output voltage of the primary inverter and the output voltage of the secondary inverter.
21 Citations
20 Claims
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1. A two layer predictive controller for bidirectional inductive power transfer, comprising:
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a first layer controller generating a mutual inductance and a reference active power; and a second layer controller receiving the mutual inductance and the reference active power, and generating a primary phase shift, a secondary phase shift, and a differential phase shift, the primary phase shift configured to manage a magnitude of an output voltage of a primary inverter, the secondary phase shift configured to manage a magnitude of an output voltage of a secondary inverter, and the differential phase shift being a phase difference between the output voltage of the primary inverter and the output voltage of the secondary inverter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A two layer predictive controller for bidirectional inductive power transfer comprising:
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a first layer controller generating a mutual inductance and a reference active power; a second layer controller receiving the mutual inductance and the reference active power, and generating a primary phase shift, a secondary phase shift, and a differential phase shift; and a secondary pulse-phase modulator receiving the secondary phase shift and the differential phase shift, and generating a secondary switching signal for a secondary inverter of a secondary side circuit, the mutual inductance estimated by the first layer controller based on an estimated primary coil current of a primary side circuit and a measured open circuit voltage of the secondary side circuit, the primary phase shift configured to manage a magnitude of an output voltage of a primary inverter of the primary side circuit, the secondary phase shift configured to manage a magnitude of an output voltage of the secondary inverter, and the differential phase shift being a phase difference between the output voltage of the primary inverter and the output voltage of the secondary inverter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A two layer predictive controller system for bidirectional inductive power transfer, comprising:
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a primary inverter; a secondary inverter; a wireless coupler coupling the primary inverter and the secondary inverter such that inductive power transfers bidirectionally between the primary inverter and the secondary inverter; a first layer controller generating a mutual inductance of the wireless coupler and a reference active power; a second layer controller receiving the mutual inductance and the reference active power, and generating a primary phase shift, a secondary phase shift, and a differential phase shift; a secondary pulse-phase modulator receiving the secondary phase shift and the differential phase shift, and generating a secondary switching signal; a secondary driver receiving the secondary switching signal, boosting the secondary switching signal, and providing the boosted secondary switching signal to the secondary inverter; a secondary communication gateway receiving the primary phase shift from the second layer controller through the first layer controller; a primary communication gateway receiving the primary phase shift from the secondary communication gateway through wireless communication; a primary pulse-phase modulator receiving the primary phase shift from the primary communication gateway and generating a primary switching signal for a primary inverter; and a primary driver receiving the primary switching signal, boosting the primary switching signal, and providing the boosted primary switching signal to the primary inverter, the primary phase shift configured to manage a magnitude of an output voltage of the primary inverter, the secondary phase shift configured to manage a magnitude of an output voltage of the secondary inverter, the differential phase shift being a phase difference between the output voltage of the primary inverter and the output voltage of the secondary inverter, and the second layer controller setting the differential phase shift at zero such that there is no power transfer between the primary side circuit and the secondary side circuit when the reference active power is zero;
the second layer controller setting the differential phase shift at −
90°
for charging at maximum power when the reference active power is negative;
the second layer controller setting the differential phase shift at −
δ
Q0 for charging at unity power factor when the reference active power is negative;
the second layer controller setting the differential phase shift at 90°
for discharging at maximum power when the reference active power is positive; and
the second layer controller setting the differential phase shift at δ
Q0 for discharging at unity power factor when the reference active power is positive.
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Specification