Single Switch Infinite-Level Power Inverters
First Claim
1. A power converter comprising:
- a single switching transistor electrically connected to a direct current (DC) power source having a first voltage level;
a first inductor-capacitor circuit electrically connected to an output of the single switching transistor and configured to receive electrical power from the DC power source through the single switching transistor in response to the switching transistor being switched on; and
a second inductor-capacitor circuit electrically connected first inductor-capacitor circuit and configured to provide an output signal to a load; and
a controller operatively connected to the single switching transistor, the controller being configured to;
identify an error between the output signal and a reference signal; and
adjust a duty cycle of a pulse width modulation (PWM) switching signal to switch the single switching transistor at a predetermined frequency with the adjusted duty cycle to reduce the identified error.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrical power converter includes a circuit with a single switching transistor that is electrically connected to a direct current power source, a first inductor-capacitor (LC) circuit electrically connected to the single switching transistor, a second LC circuit electrically connected to the first LC circuit and configured to provide an output signal to a load. A controller is operatively connected to the single switching transistor. The controller identifies an error between the output signal of the circuit and a reference signal and adjusts a duty cycle of a pulse width modulation (PWM) switching signal to switch the single switching transistor at a predetermined frequency with the adjusted duty cycle to reduce the identified error.
23 Citations
56 Claims
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1. A power converter comprising:
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a single switching transistor electrically connected to a direct current (DC) power source having a first voltage level; a first inductor-capacitor circuit electrically connected to an output of the single switching transistor and configured to receive electrical power from the DC power source through the single switching transistor in response to the switching transistor being switched on; and a second inductor-capacitor circuit electrically connected first inductor-capacitor circuit and configured to provide an output signal to a load; and a controller operatively connected to the single switching transistor, the controller being configured to; identify an error between the output signal and a reference signal; and adjust a duty cycle of a pulse width modulation (PWM) switching signal to switch the single switching transistor at a predetermined frequency with the adjusted duty cycle to reduce the identified error. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 54, 55, 56)
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10-33. -33. (canceled)
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34. An electrical inverter system comprising:
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an inverter circuit comprising; a single switching transistor configured to be electrically connected to a direct current (DC) power source; a transformer having an input electrically connected to an output of the single switching transistor; and an electrical switching device having an input electrically connected to an output of the transformer and configured to switch at a first predetermined frequency to generate an alternating current (AC) output from a DC input supplied by the DC power source; and a controller operatively connected to the single switching transistor, the controller being configured to; generate a pulse width modulation (PWM) switching signal to switch the single switching transistor at a second predetermined frequency; identify an error between a voltage level of an AC reference signal and a measured voltage level of an output signal from the inverter circuit; and set a duty cycle of the PWM switching signal to reduce the identified error. - View Dependent Claims (35, 36, 37, 38)
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39-53. -53. (canceled)
Specification