Markham, Canada
Markham, Canada

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Patent
AEG Power Solutions Inc. | Date: 2012-04-04

The invention relates to a power electronic assembly (1, 2, 3) with a heat sink (2), a power semiconductor module (1) and a circuit arrangement (3) for controlling the power semiconductor module, wherein the heat sink (2) has at least two parallel channels through which a coolant can flow.


A system for generating a duty cycle control signal for controlling an inverter power train providing an output current waveform to a grid operating with a grid voltage waveform compares a reference current waveform shaped to the grid voltage waveform with the output current waveform to generate an error signal. The error signal is used to generate a corrective control action signal, which is combined with a feed-forward signal representing a nominal duty cycle generated with a feed-forward function. The combination of the feed-forward signal and the corrective control action signal provide the duty cycle control signal.


Patent
AEG Power Solutions Inc. | Date: 2012-02-24

An uninterruptible power supply with a rectifier, energy store for storing electrical energy, inverter, switching means and a controller is provided. The rectifier is connected to a rectifier input to a supply grid (AC1), wherein the energy store is connected to a rectifier output and to an inverter input of the inverter. A network (AC3) or load to be protected is connected to an inverter output of the inverter. The rectifier input or a supply grid (AC2) is connected via the switching means to the inverter output. The rectifier, the inverter and the switching means are controlled by the controller. The arrangement includes means for supplying auxiliary current. Each means for supplying auxiliary current is connected with an input for the supplying auxiliary current to the first control part and an input for supplying auxiliary current to the second control part, for supplying the control parts with electric energy.


Patent
AEG Power Solutions Inc. | Date: 2013-01-18

A photovoltaic power plant with photovoltaic modules (1) for generating electric power. The modules (1) are connected together into a plurality of strands (2). A first central converter (5) for converting electrical energy generated by the photovoltaic modules into electrical energy with a voltage having a voltage waveform that corresponds to a voltage waveform of a voltage in a utility grid, and with an output for feeding the converted current into the utility grid, wherein the first central converter (5) has at least one electric motor (51) and a synchronous generator (52) whose shafts are coupled to one another.


A method of detecting an interruption of grid electrical power at an output of an inverter power train coupled to an electrical grid includes generating a reference waveform representing a power train output current waveform with a current control loop. An out-of-phase control signal is generated, which is synchronized and out-of-phase with a grid voltage waveform, with a voltage control loop coupled to the output of the inverter power train, the voltage control loop having a gain proportional to an inverter power train load impedance. The reference waveform and the out-of-phase control signal are combined to generate a power train control signal for producing a small phase difference between the inverter power train output current waveform and the grid voltage waveform. The inverter power train output is monitored for a change and the inverter power train is turned off in response to a change in the inverter power train output caused by an increase in inverter power train load impedance resulting from an interruption in the grid electrical power.


Patent
AEG Power Solutions Inc. | Date: 2012-04-04

An arrangement for uninterruptible power supply with a rectifier, an energy store, an inverter with an input, a switch and a controller. The rectifier is connected to a rectifier input to a supply grid (AC 1), the energy store is connected to a rectifier output and to an inverter input. A network (AC 3) to be protected is connected to an inverter output of the inverter. The rectifier input or a supply grid (AC2) is connected via the switch to the inverter output, wherein the rectifier , the inverter and the switch are controlled by the controller , wherein the arrangement includes sensors for measuring voltages and/or currents. Each sensor is connected via a sensor output to exactly one controller and each sensor is configured to convert a parameter to be measured into a low-voltage signal.


An apparatus for heating by electromagnetic induction heating e.g., for heating silicon carbide, with a first power supply arrangement (1) having an output with two terminals (11, 12), with a second power supply arrangement (2) for providing an n-phase multi-phase AC voltage at n outputs, each output having two terminals (21, 22, 23). The phase shift between the chained voltages (U12, U21) of the n-phase multi-phase AC voltage provided at output side of second power supply arrangement is 360/n. The n outputs of the second power supply arrangement (2) form a chain: two terminals are assigned to n-2 outputs, in two outputs of the n outputs have only one terminal (22), which is also associated with another output, whereas the other terminals (21, 23) of these two outputs are associated only with one output and wherein these terminals (21, 23) form the beginning and the end of the chain.


Power supply arrangement with inverter (3) generating single-phase AC current and transformer (4) having primary winding (41) and first secondary winding (421) and second secondary winding (422). The secondary windings (421, 422) have same number of turns and are arranged to be permeated by same magnetic flux during operation of transformer (4), so that identical voltages are tapped at secondary windings (421, 422) during operation of the transformer (4). A respective terminal of first secondary winding (421) and a respective terminal of second secondary winding (422) are connected to one another at first point (K1), that two-phase system whose phases are shifted by 180 relative to each other is produced between first point (K1), additional terminal of first secondary winding (421) and additional terminal of second secondary winding 422). First point (K1) is connected to neutral conductor terminal (N) of output of power supply arrangement via capacitor.


Patent
AEG Power Solutions Inc. | Date: 2013-02-12

A power supply arrangement (MF) with an inverter (12) for generating N-phase AC current and at least one N-phase AC current transformer (2) having primary windings (211, 212, 213) and secondary windings (221, 222, 223), wherein the primary windings (211, 212, 213) are connected in a polygon and a sum vector of the voltages present at the N secondary windings (221, 222, 223) becomes zero when the transformer is idling, wherein each vertex of the polygon formed by the primary windings (211, 212, 213) is connected via a corresponding capacitor (C11, C12, C13) with a corresponding phase conductor terminal of the inverter (12).


Power supply arrangement with first transformer (T1), having transformer core (K) with legs (K1) and yokes (K2) connecting these legs. Legs (K1) and yokes (K2) are arranged in geometric shape of a cylinder. The cylinder has first polygon as base surface and second polygon as surface opposite. The yokes (K2) are arranged along edges of first polygon and along edges of second polygon. Legs (K1) are arranged along edges of an outer surface of the cylinder. Primary windings and secondary windings (T1.1, T1.2, T1.3) arranged on legs (K1) of the transformer core. Secondary windings (T1.1, T1.2, T1.3) have three terminals (A), including a neutral conductor terminal and two phase conductor terminals. Phase conductor terminals of the secondary windings (T1.1, T1.2, T1.3) are mechanically and electrically connected to a first electrically conductive support (L), having an outer end, the outer end of the first carrier (L) are located outside the cylinder.

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