| Patent application number | Description | Published |
|---|
| 20090001923 | SYSTEMS AND METHODS FOR OPERATING Z-SOURCE INVERTER INDUCTORS IN A CONTINUOUS CURRENT MODE - Systems, apparatus, and methods for operating inductors in a Z-source inverter in a continuous current mode are provided. One system includes an AC motor, a Z-source inverter, and a processor. The inverter is configured to provide current and reactive power to the AC motor. The processor is configured to monitor the current and instruct the inverter to provide a greater amount of reactive power to the AC motor if the current is below/equal to a threshold amount. An apparatus includes means for determining if current produced by the inverter is below/equal to a threshold amount, and means for altering voltage commands supplied to the inverter so that an AC motor is induced to draw additional reactive power. One method includes determining if a plurality of inductors are providing a threshold current amount, and inducing a motor to draw more reactive power if the current is below/equal to the threshold amount. | 01-01-2009 |
| 20090027933 | VOLTAGE LINK CONTROL OF A DC-AC BOOST CONVERTER SYSTEM - Systems and methods are disclosed for a DC boost converter. The systems and methods combine operation of an inductor with the input capacitor of a DC/AC inverter via a switch configuration to power the DC/AC inverter. The switch configuration is controlled by a plurality of control signals generated by a controller based on a variety of control modes, and feedback signals. | 01-29-2009 |
| 20090066271 | METHOD AND SYSTEM FOR CONVERTING DC POWER TO AC POWER - Methods and systems for converting direct current (DC) power to alternating current (AC) power are provided. A first phase of the AC power is generated based on a first carrier signal. A second phase of the AC power is generated based on a second carrier signal. | 03-12-2009 |
| 20090231893 | SINGLE-PHASE FULL BRIDGE BOOST CONVERTER SYSTEMS AND METHODS - Single-phase full bridge boost converter systems and methods are provided. One system includes a direct-quatrature (D-Q) control system configured to generate a control voltage (v | 09-17-2009 |
| 20100188071 | SYSTEMS AND METHODS FOR DETECTING RESONANCE ON A DIRECT CURRENT VOLTAGE BUS - Systems and methods are provided for detecting a resonance on a bus coupled to an inverter module. A method comprises generating a first signal on the bus with a first frequency and sweeping the first signal from the first frequency to a second frequency. A second signal, which may be influenced by a characteristic of a component coupled to the bus, is obtained from the bus during the sweep of the first signal from the first frequency to the second frequency. The method further comprises determining a resonant frequency based on the first signal and the second signal and updating the inverter module such that the resonant frequency is not used as a switching frequency for the inverter module. | 07-29-2010 |
| 20100202177 | VOLTAGE LINK CONTROL OF A DC-AC BOOST CONVERTER SYSTEM - Systems and methods are disclosed for a DC boost converter. The systems and methods combine operation of an inductor with the input capacitor of a DC/AC inverter via a switch configuration to power the DC/AC inverter. The switch configuration is controlled by a plurality of control signals generated by a controller based on a variety of control modes, and feedback signals. | 08-12-2010 |
| 20100244773 | UNITY POWER FACTOR ISOLATED SINGLE PHASE MATRIX CONVERTER BATTERY CHARGER - Apparatus for unity power factor, isolated, single phase switch matrix converter/battery charger is provided. In one implementation, An AC grid voltage source is coupled to and inductor and a switching matrix. The inductor is charged and the switching matrix is controlled to crate various current paths for the voltage across the inductor to add to the AC grid voltage. The boosted AC grid voltage flow across an isolation transformer to be rectified and used to charge a battery matrix for an electric powered vehicle. | 09-30-2010 |
| 20110031927 | CHARGING SYSTEM WITH GALVANIC ISOLATION AND MULTIPLE OPERATING MODES - Systems and methods are provided for operating a charging system with galvanic isolation adapted for multiple operating modes. A vehicle charging system comprises a DC interface, an AC interface, a first conversion module coupled to the DC interface, and a second conversion module coupled to the AC interface. An isolation module is coupled between the first conversion module and the second conversion module. The isolation module comprises a transformer and a switching element coupled between the transformer and the second conversion module. The transformer and the switching element are cooperatively configured for a plurality of operating modes, wherein each operating mode of the plurality of operating modes corresponds to a respective turns ratio of the transformer. | 02-10-2011 |
| 20110031930 | SYSTEMS AND METHODS FOR BI-DIRECTIONAL ENERGY DELIVERY WITH GALVANIC ISOLATION - Systems and methods are provided for bi-directional energy delivery. A charging system comprises a first bi-directional conversion module, a second bi-directional conversion module, and an isolation module coupled between the first bi-directional conversion module and the second bi-directional conversion module. The isolation module provides galvanic isolation between the first bi-directional conversion module and the second bi-directional conversion module. | 02-10-2011 |
| 20110115285 | SYSTEMS AND METHODS FOR COMMUTATING INDUCTOR CURRENT USING A MATRIX CONVERTER - Systems and methods are provided for delivering current using a matrix converter in a vehicle. An electrical system comprises an AC interface, a first conversion module coupled to the AC interface, an inductive element coupled between the AC interface and the first conversion module, and a control module coupled to the first conversion module. The control module is configured to operate the first conversion module in a bidirectional operating mode to commutate current bidirectionally. When a magnitude of the current through the inductive element is greater than a first threshold value, the control module operates the conversion module in a unidirectional operating mode, wherein current is commutated unidirectionally. | 05-19-2011 |
