| Patent application number | Description | Published |
|---|
| 20100090634 | Method and apparatus for connecting a photovoltaic system to a power grid - An apparatus and a method for preparing connection of a photovoltaic system (Q | 04-15-2010 |
| 20100164302 | Method for operating a photovoltaic system and photovoltaic system for carrying out the method - A photovoltaic system having a plurality of photovoltaic modules producing electric energy and method for operating such photovoltaic system are disclosed. With the method, the photovoltaic modules are connected to a first DC motor having a motor shaft, and a generator shaft of a three-phase generator is coupled to the motor shaft. The three-phase generator can be connected to a power grid. The motor shaft of a second DC motor can be connected to the generator shaft, with only one of the two DC motors being initially driven with the electric energy produced by the photovoltaic modules. The electric energy is subsequently divided among both the first and the second DC motor. This process significantly shortens the startup process of the photovoltaic system compared to conventional systems. | 07-01-2010 |
| 20100314843 | CHARGING VEHICLE FOR AN AUTOMATIC ASSEMBLY MACHINE FOR PHOTOVOLTAIC MODULES - A ground vehicle for feeding photovoltaic modules to an automatic assembly machine is disclosed, wherein the automatic assembly machine is movable on previously installed PV modules and the PV modules that still need to be installed are fed to the automatic assembly machine above a supporting structure. The ground vehicle has six vertically movable rams arranged in spaced-apart relationship in pairs in the direction of travel, with the PV modules to be installed located above the rams. Timing of the vertical ram motion is controlled so that a retracted ram of a ram pair is always extended before the other ram of the ram pair is lowered. | 12-16-2010 |
| 20110031815 | FUSE FOR DISCONNECTING AN INVERTER FROM A PHOTOVOLTAIC GENERATOR - A photovoltaic system includes an inverter, a photovoltaic generator with a plurality of serially connected photovoltaic modules, said photovoltaic generator connected to the inverter by an electrical supply line, a controllable fuse interconnected in the electrical supply line between the inverter and the photovoltaic generator and having a signal input, and a voltage-dependent resistor connected between the signal input of the controllable fuse and the electrical supply line and generating a control signal which triggers the controllable fuse responsive to the control signal and interrupts the electrical supply line. The controllable fuse can be used to disconnect the electrical connection of the photovoltaic system to the inverter when a switch short-circuiting one or more modules of the photovoltaic generator malfunctions. The arrangement permits operation of photovoltaic system at an operating voltage of close to 1000 V, thereby allowing use of thinner cables. | 02-10-2011 |
| 20110072742 | STEEL SUPPORT FRAME FOR A PHOTOVOLTAIC SYSTEM USABLE AS A CARPORT - A base frame for a parking lot roof equipped with photovoltaic modules is proposed, wherein two mirror-symmetrically constructed halves are provided, with each half having an inner arc constructed of three inner struts and an outer arc constructed of three outer struts, which are connected with each other by cross struts. The structure is light-weight and can be easily manufactured. | 03-31-2011 |
| 20110089303 | LIGHTWEIGHT SUPPORT FOR PHOTOVOLTAIC FACILITIES - A lightweight support includes a corrugated base body having an elongated rectangular configuration defining an upper longitudinal rim and a lower longitudinal rim. The base body is composed of a first layer made of metal, a second layer which is made of rigid foam and applied onto the first layer, and a third layer which is made of metal and applied onto the second layer. Stabilization rails are attached to the base body in order to maintain integrity of the lightweight support when subject to stress. The stabilization rails can hereby be placed on or at or integrated in the upper and lower longitudinal rims, respectively. | 04-21-2011 |
| 20110203635 | PHOTOVOLTAIC ARRAYS, IN PART HAVING SWITCHES FOR SHORT-CIRCUITING OF MODULES - A photovoltaic generator is provided that has at least one string of multiple series-connected photovoltaic modules, each of which has a plurality of series-connected photovoltaic cells. One quarter to one half of all photovoltaic modules of the at least one string can be short-circuited by means of a switch. Activation of the switch takes place when a predefined voltage value across the string is exceeded. The shorting switch is only present in some of the arrays making up the photovoltaic generator, which reduces cabling costs. Because of the parallel connection of the arrays, the voltage of the arrays without shorting switches is drawn down to a lower voltage that is safe for the inverter. | 08-25-2011 |
| 20110204900 | METHOD AND DEVICE FOR DETECTING UNDERPERFORMING PV MODULES IN A PV SYSTEM BY USING DISCONNECT SWITCHES - A measuring method for determining an output drop of a PV unit is provided. The PV unit is arranged within a photovoltaic system comprising a plurality of electrically parallel-connected PV units. Each PV unit can be removed from the parallel circuit by a switching device. Further, a total current measuring device for measuring the total current through all PV units of the parallel circuit is provided. The defective PV unit is determined in an evaluation unit by the connection and disconnection of a disconnect switch. | 08-25-2011 |
| 20110204916 | METHOD AND DEVICE FOR IDENTIFYING LOW-OUTPUT PV MODULES IN A PV SYSTEM - A method and a device for carrying out the method are disclosed in order to aid in the search for faulty photovoltaic modules. In a photovoltaic system comprising multiple PV units electrically connected in parallel, each PV unit is assigned its own fixed current sensor. Furthermore, each PV unit can be removed from the parallel circuit by a switching device. | 08-25-2011 |
