The invention provides a power supply system comprising a solar panel for generating electricity and a fuel cell for supplying electricity to a load. The fuel cell is regenerated using the electricity generated by the solar panel. This regeneration is based on supply and demand data for at least a full year cycle. In this way, an energy shift method is used to create an energy efficient system to store summer surplus energy, for either longer endurance or even over the winter. This fuel cell system can for example break the geographical barrier for off grid street lighting system with high light output by downsizing the photo-voltaics while upsizing energy storage, thereby reducing cost compared to battery driven systems.

Solar power supply system

A telecommunications system (10/100) is disclosed herein. The telecommunications system (10/100) includes a chassis (12/112) defining a top end (14/114), a bottom end (16/116), and a generally pyramidal shape, wherein a transverse cross-sectional footprint (28) of the chassis (12/112) changes in outer dimension as the transverse cross-sectional footprint (28) extends from the top end (14/114) to the bottom end (16/116), the telecommunications chassis (12/112) further defining at least one sidewall (30/130, 32/132, 34/134, 36/136), the at least one sidewall (30/130, 32/132, 34/134, 36/136) extending at an angle to both the top end (14/114) and the bottom end (16/116), the at least one sidewall (30/130, 32/132, 34/134, 36/136) defining ports (38) defining connection locations for receiving telecommunications equipment.

High density telecommunications systems with cable management and heat dissipation features

The invention discloses a modular multilevel converter and a sub-module topological structure thereof, which comprises a left half bridge, a right half bridge and a connecting circuit. The left half bridge comprises T1, T2, D1, D2, M1, DM1 and C1. T1, T2 and the M1 are respectively in inverse parallel connection with the D1, the D2 and the DM1. The M1 is connected with a capacitor in series. The positive electrode of the capacitor is connected with the drain electrode of M1. The collector electrode of the T1 is connected with the source electrode of the M1. The emitting electrode of the T2 isconnected with the negative electrode of the capacitor. The right half bridge comprises T3, T4, D3, D4, DM2, M2, C2, T3 and T4. The M2 is respectively in inverse parallel connection with the D1, the D2 and the DM2. The M2 is connected with the capacitor in series. The positive electrode of the capacitor is connected with the drain electrode of the M2. The collector electrode of the T3 is connectedwith the source electrode of the M2. The emitting electrode of the T4 is connected with the negative electrode of the capacitor. The left half bridge is connected with the right half bridge through the connecting circuit. The topological structure has the capability of actively outputting four levels. An MMC system can achieve direct-current fault ride-through and voltage-lifting operation basedon the topological structure.

Modular multilevel converter and sub-module topology topological thereof

A power electronic subassembly having a housing and a capacitor arranged therein. The housing has an internally arranged cooling area, which is cooled by a cooling device integrated in the housing or an external cooling device. The capacitor has a contact device of a first polarity and a contact device of a second polarity and a capacitor busbar system. This capacitor busbar system comprises first and second sheet-like shaped metal bodies. The first metal body with the first contact device of the first polarity and the second metal body with the second contact device of the second polarity are electrically conductively connected. A first portion of the first metal body has a first subportion, which is arranged parallel to and at a distance from the cooling area, and a second subportion, which is in thermal contact with the cooling area, wherein the two subportions are connected by an intermediate portion.

Power electronic subassembly with capacitor

Heat sinks that cool electronics are mounted within a subsea housing or vessel. Springs are used to provide pressure between the heat sinks and a vessel wall. Vessel wall deformation caused by external seawater pressure is absorbed by the springs, which maintain a pre-load force according to the spring characteristics. The mechanism also allows for rack mounting of the electronics without the need for manual access in the relatively compact vessel or housing.

Gas filled subsea electronics housing with spring engaged heat sink

A three-dimensional arrangement for a power converter device, e.g., an inverter or a rectifier, is provided. The switching elements, activation electronics, the load connections of the power converter device are arranged on a carrier device in such a way that defines especially short conduction paths. The components of the power converter device (e.g., all required components), such as switching elements, control electronics, and load connections, are arranged on a common carrier device. The carrier device is simultaneously used as a cooling device for the entire switching device. The power converter device may thereby achieve particularly efficient performance.

Power converter arrangement and method for producing a power converter arrangement

The invention relates to a converter module (1) for a multi-level energy converter (10), comprising two converter module connections (11, 12), a switching unit (13) and a control connection to control switch states of the switching unit (13), wherein the switching unit (13) provides the two converter module connections (11, 12) of the converter module (1) and the control connection, wherein the converter module (1) has two converter module capacitors (8, 9) connected in series, which are connected to the switching unit (13), wherein each of the converter module capacitors (8, 9) provides a converter module capacitor voltage, wherein the switching unit (13) is configured to switch the converter module capacitor voltage of one of the converter module capacitors (8, 9) or a summed voltage of the converter module capacitors (8, 9) connected in series to converter module connections (11, 12) according to a respective switch state of the switching unit (13).

Converter module for a multi-level energy converter

The device (11) has assembly (12) for performing electrolysis that is thermally coupled to the electrical transducer (13), such that the waste heat of the electrical transducer are directly or indirectly used to perform electrolysis process A structure having reversely-operated high temperature fuel cell such as solid oxide fuel cell is provided in assembly for electrolysis An independent claim is included for photovoltaic arrangement

Electrical energy conversion and storage device for use in photovoltaic arrangement, has electrolysis assembly that is thermally coupled to transducer, such that waste heat of transducer are used to perform electrolysis

A converter with a DC link for converting an input voltage into an alternating voltage with a pre-determined amplitude and frequency for driving a single or multiple-phase load may include a number of modules which are stackable over one another. Each module may have a ceramic cooling body with a receiving surface on which electronic components of one phase are mounted, wherein the ceramic cooling body has channel(s) in the region of the receiving surface for carrying a coolant during the operation of the converter The converter may include a DC link capacitor and input-side and output-side power connections arranged on a first carrier having a arranged perpendicular to the receiving surface. The converter may also include a control unit for driving the electronic components of the phase, the control unit being arranged on a second carrier having a main plane arranged perpendicularly to the plane of the receiving surface.

Converter With DC Link

FIELD: electrical equipment.SUBSTANCE: invention relates to electrical equipment. Disclosed is converter having the intermediate constant voltage circuit for the input voltage conversion into the alternating voltage with predetermined amplitude and frequency for control over the single- or multi-phase load, having a number of modules (10; 10-1, ..., 10-7), configured for stacking one above the other. Each module (10; 10-1, ..., 10-7) includes ceramic cooling radiator (11) having a mounting surface (12), on which one phase electronic components (24) are placed, wherein the ceramic cooling radiator (11) has one or more channels in the mounting surface (12) area, through which during the converter (1) operation cooling medium can flow. In addition, converter (1) has the intermediate circuit capacitor (112), as well as input and output power connectors, which are located on the first holder (110), which main plane is perpendicular to the mounting surface (12) plane. Finally, there is a control unit for control over the phase electronic components (24), wherein this control unit is located on the second holder (120), which main plane is perpendicular to the mounting surface (12) plane.EFFECT: proposed is converter having the constant voltage intermediate circuit.18 cl, 12 dwg

Matthias Neumeister

Papers

Power converter arrangement and method for producing a power converter arrangement

Converter module for a multi-level energy converter

Electrical energy conversion and storage device for use in photovoltaic arrangement, has electrolysis assembly that is thermally coupled to transducer, such that waste heat of transducer are used to perform electrolysis

Converter With DC Link

Converter having the constant voltage intermediate circuit