Abstract:
PROBLEM TO BE SOLVED: To specify a direct converter that exchanges electrical energy between two-pole switching cells of direct converter. SOLUTION: The direct converter 1 including n input phase connections U1, V1, W1 and p output phase connections U2, V2, W2 is specified, wherein n≥2 and p≥2. The direct converter also includes (n×p) two-pole switching cells 2 for switching at least one positive voltage and at least one negative voltage between the poles. Each of the output phase connections U2, V2, W2 is connected in series with the respective input phase connections U1, V1, W1 via a switching cell. To enable any desired and continuous current flow setting from an input phase connection to an output phase connection of the direct converter and, moreover, to exchange an electrical energy between the two-pole switching cells of the direct converter, at least one inductance 3 is connected into each series connection. A system including series connection is also provided. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve problems of cost, vulnerability in maintenance, failure and the like of a starter subjected to long-distance connection to each exciter unit SES through a communication link. SOLUTION: The starter includes at least one stator power feeding unit SSD, and a switching device SSB. The switching device is prepared for each stator power feeding unit SSD and is assigned to each stator power feeding unit SSD. It can be connected to each corresponding stator power feeding unit SSD, can be connected to at least one synchronous machine G, and can be connected mutually. Two or more exciter units SES, SESX are connected mutually through a ring communication link 1, and each stator power feeding unit SSD is connected to the ring communication link 1. Then, each stator power feeding unit SSD is connected to the corresponding switching device SSB through the communication link. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an energy system which is solid, does not require a transformer and has a simple design. SOLUTION: The energy system has a wind power turbine 1 or a hydraulic power turbine 1, the turbine is connected to a generator 2, and the generator 2 has at least two stator windings 3. Each stator winding 3 has a corresponding rectifier unit 4, and each stator winding 3 is connected to an alternating-current voltage side of the corresponding rectifier unit 4. Furthermore, each rectifier unit 4 is provided with a corresponding energy-storing circuit 5, and the unit 4 is connected to the corresponding energy-storing circuit 5, in parallel at a direct-current voltage side, and the energy-storing circuits 5 are connected to one another in series. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a power circuit breaker with high power breaking capacity, efficiently exhausting arc gas with high temperature from an arc chamber. SOLUTION: The power circuit breaker comprises an arc extinction chamber having an arc chamber formed into nearly a radial symmetric shape, extending along a longitudinal axis line 1 filled with insulation gas. The extinction chamber has at least two contact members, out of which at least one contact member is formed into a pipe-shaped hollow contactor 2. the pipe-shaped hollow space is formed in order to release the gas with high temperature from the arc chamber to an exhaustion tab 10. In order to make the gas with high temperature radially deflect into the exhaustion tab 10, a deflection part 4 interlocking with at least one of first opening parts 6 is arranged at the side surface of the hollow contactor 2 facing the opposite side of the arc chamber. The exhaustion tab is communicated with an extinction chamber tab 14 through at least one of the second opening parts 13. Further, at least one intermediate tab 7 is formed between the hollow contactor 2 and the exhaustion tab 10. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method, a computer program, a product thereof, and an apparatus for appropriately and simply monitoring a voltage transformer in an electric switch, as well as a switch comprising the apparatus. SOLUTION: The validity check for the voltage transformer includes a step, where a current topology of the switch is detected by an apparatus control system based on a present electric connection of primary equipment and a current position of a switch, a step for discriminating at least one partial region of the switch, comprising at least two voltage transformers that are in DC current relation based on the current topology, a step where the voltage transformer is divided into groups, based on a measurement signal in the partial region so that all the measurement signals agree with each other in the frame of allowable measurement precision within each group, and a step where a display signal or an alarm signal is formed by the apparatus control system, if at least one group exists. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To specify arrangement of a converter circuit for increasing AC voltage. SOLUTION: The arrangement of the converter circuit for increasing the AC voltage includes a converter (2). A filter circuit (3) connected to an inverter and AC voltage terminals (8.1, 8.2) is designed, and the filter circuit (3) includes at least one partial filter circuit (4). In the partial filter circuit (4), a converter output current IU carried at the partial filter circuit (4) goes without delay with the partial filter output voltage UF a load terminals (5, 6) of the partial filter circuit (4). At the same time, a converter output voltage (UU at AC voltage terminals (8.1, 8.2) is limited in design to a value (|UU b |) to be specified. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To enable the easy and quick attachment and maintenance of a component which are performed at a low cost. SOLUTION: A holder for one or more electronic components (1) comprises first and second plate-shaped leg portions (2), (3). The first and second leg portions (2), (3) are connected with each other by their one-end-portions, and are formed substantially in orthogonal angle to each other, and further, have respectively their inner walls (4), (5) which are substantially opposed orthogonal to each other. The inner wall (4) of the first leg portion (2) has reception surfaces (6) for supporting the outer surface portion of the electronic component (1). The inner wall (5) of the second leg portion (3) has one or more pressure surfaces (7) for contacting therewith the front-surface region of the front-surface portion of the component (1) having an electrical terminal.
Abstract:
PROBLEM TO BE SOLVED: To specify an insulator for an electrical busbar system having at least one rail. SOLUTION: The insulator is specified for an electrical busbar system having at least one rail (5). Overall, it has the shape of an axisymmetrical body (1), with a hole (3) along the axis of symmetry (2). Attaching surfaces (4), perpendicular to and at a certain distance from the hole (3), extend radially to the edge region of the body (1) and are supplied on each end surface of the body (1) away from the axis of symmetry (2). Further, the first surfaces (6), which are essentially ribbed, extend radially between the hole (3) and the attaching surfaces (4). Additionally, an insulator system having at least two insulators is disclosed.
Abstract:
PROBLEM TO BE SOLVED: To obtain a power semiconductor module where pressure being applied to an entire semiconductor chip becomes the same, and the electric conductivity of a means being provided to create a contact is improved regardless of the distance between a semiconductor chip and a second main connection part. SOLUTION: A power semiconductor module is specified. In the power semiconductor module, at least one semiconductor 4 where a contact should be created by pressure is electrically connected to a main connection part 30 via a contact member 8. The contact member 8 has two flat contact surfaces 81 and 82, and a spring member is arranged between the surfaces. Regardless of the position and height of each of the chips 4, each spring member 7 secures standard contact force. When the module is fixed, a ceramic support member 10 prevents the overload of the semiconductor chip 4.