Austin, TX, United States

SolarBridge Technologies

www.solarbridgetech.com
Austin, TX, United States

SolarBridge Technologies is a provider of solar micro-inverter, solar inverter for photovoltaic arrays. These types of products aim to increase energy harvest and reliability while reducing the cost of solar installations and maintenance for residential and commercial markets. Wikipedia.

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Qin H.,SolarBridge Technologies | Kimball J.W.,Missouri University of Science and Technology
IEEE Transactions on Industrial Electronics | Year: 2013

Modern development of semiconductor power-switching devices has promoted the use of power electronic converters as power transformers at the distribution level. This paper presents an ac-ac dual-active-bridge (DAB) converter for a solid-state transformer. The proposed converter topology consists of two active H-bridges and one high-frequency transformer. Four-quadrant switch cells are used to allow bidirectional power flow. Because power is controlled by the phase shift between two bridges, output voltage can be regulated when input voltage changes. This paper analyzes the steady-state operation and the range of zero-voltage switching. It develops a switch commutation scheme for the ac-ac DAB converters. Experimental results from a scaled-down prototype are provided to verify the theoretical analysis. © 1982-2012 IEEE.


Qin H.,SolarBridge Technologies | Kimball J.W.,Missouri University of Science and Technology
IEEE Transactions on Power Electronics | Year: 2014

A solid-state transformer (SST) is a high-frequency power electronic converter that is used as a distribution power transformer. A common three-stage configuration of an SST consists of ac-dc rectifier, isolated dc-dc dual-active-bridge (DAB) converter, and dc-ac inverter. This study addresses the controller design issue for a dc-dc DAB converter when driving a regulated single-phase dc-ac inverter. Since the switching frequency of the inverter stage is much higher than that of the DAB stage, the single-phase inverter is modeled as a double-line-frequency (e.g., 120 Hz) current sink. The effect of 120-Hz current by the single-phase inverter is studied. The limitation of a PI-controller, low gain at 120 Hz, is investigated. Two methods are proposed to improve the regulation of the output voltage of DAB converters. The first one uses a bandstop filter and feedforward, while the second method uses an additional proportional-resonant controller in the feedback loop. Theoretical analysis, simulation, and experiment results are provided. © 1986-2012 IEEE.


Patent
SolarBridge Technologies | Date: 2013-01-28

Processes, systems, devices, and articles of manufacture are provided. Each may include adapting micro-inverters initially configured for frame-mounting to mounting on a frameless solar panel. This securement may include using an adaptive clamp or several adaptive clamps secured to a micro-inverter or its components, and using compressive forces applied directly to the solar panel to secure the adaptive clamp and the components to the solar panel. The clamps can also include compressive spacers and safeties for managing the compressive forces exerted on the solar panels. Friction zones may also be used for managing slipping between the clamp and the solar panel during or after installation. Adjustments to the clamps may be carried out through various means and by changing the physical size of the clamps themselves.


Patent
SolarBridge Technologies | Date: 2014-01-20

A power inverter may include a transformer serving as an isolation barrier. The power inverter may include a first controller on one side of the isolation barrier. The first controller may encode the frequency of an input voltage of the transformer with one or more operating conditions of a direct current power supply electrically coupled to the inverter. As second controller on the other side of the isolation barrier may determine a frequency associated with an output voltage of the transformer. The second controller may decode the frequency associated with the output voltage of the transformer to determine the encoded operating conditions.


Patent
SolarBridge Technologies | Date: 2013-07-23

Power conversion methods, systems, articles of manufacture, and devices are provided. The power conversion may include converting between direct current and alternating current wherein switching losses associated with latent electrical charges are reduced. Current sensing may be low-side bus reference. Solid-state implementations, code implementations, and mixed implementations are provided.


Patent
SolarBridge Technologies | Date: 2012-01-23

Reverse recovery avoidance when converting power is provided. A first switch and second switch may be operated to supply an AC load with positive current, respective to the AC load, from a DC power source. A third and fourth switch may be operated to supply the AC load with negative current, respective to the AC load, from the DC power source. Four diodes may be employed with the switches. One diode may conduct the positive current when the first switch is off and the second switch is on. Another diode may conduct the negative current when the third switch is off and the fourth switch is on.


Patent
SolarBridge Technologies | Date: 2011-04-27

A method for controlling an multi-stage inverter comprises controlling an input converter of the multi-stage inverter with an input controller and controlling an output converter of the multi-stage inverter with an output controller separate from the input controller. The input controller and output controller may be galvanically isolated. Additionally, the method may include communicating data between the input controller and the output controller over a power bus of the multi-stage inverter.


Patent
SolarBridge Technologies | Date: 2011-11-09

Systems, processes, and manufactures are provided that employ a casing associated with an electrical component to provide some, most, substantially all or all electrical insulative protection necessary for the electrical component. This casing may be further employed with potting or other materials to supplement and add additional or different protections for the component. These additional protections can include additional insulative resistance, thermal protection, moisture protection and other buffers to and from the environment.


Patent
SolarBridge Technologies | Date: 2014-03-15

Inverter topologies for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform are disclosed. In some disclosed embodiments, an inverter may include a full bridge LLC resonant converter, a first boost converter, and a second boost converter. In such embodiments, the first and second boost converters operate in an interleaved manner. In other disclosed embodiments, the inverter may include a half-bridge inverter circuit, a resonant circuit, a capacitor divider circuit, and a transformer.


Patent
SolarBridge Technologies | Date: 2011-12-13

A device, system, and method for global maximum power point tracking comprises monitoring an output power of a DC power source while executing a maximum power point tracking algorithm and adjusting a maximum power point tracking command signal in response to the output power being less than a reference output power. The command signal is adjusted until the output power exceeds a previous output power by a reference amount. The command signal may be a voltage command signal, a current command signal, an impedance command signal, a duty ratio command signal, or the like.

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