Patent application number | Description | Published |
20090201659 | MULTI-COMPONENT ELECTRICAL MODULE - A mechanical construction of an electrical module includes two or more electrical components ( | 08-13-2009 |
20090231074 | REACTOR ARRANGEMENT - A reactor arrangement for alternating electrical currents includes, for each alternating electrical current, different coils ( | 09-17-2009 |
20090231891 | REACTOR ARRANGEMENT FOR ALTERNATING ELECTRICAL CURRENT - A reactor arrangement for alternating electrical current includes different coils ( | 09-17-2009 |
20100039161 | METHOD OF CONTROLLING A RECTIFYING BRIDGE AND A CIRCUIT FOR THE CONTROL - A circuit for controlling a thyristor (V | 02-18-2010 |
20100039162 | METHOD OF CONTROLLING A RECTIFYING BRIDGE IN A DIODE MODE AND A CIRCUIT FOR THE CONTROL - A method and a circuit for controlling a thyristor (V | 02-18-2010 |
20100097121 | METHOD AND ARRANGEMENT FOR CONTROLLING SEMICONDUCTOR COMPONENT - A method is disclosed for controlling a semiconductor component which includes a voltage controlled gate. The method includes determining and storing, prior to use of the semiconductor component, reference values of a gate voltage to be given to the gate of the semiconductor component during a change of operating states. The method also includes providing a pulse width modulated voltage from a driver circuit to a resistor connected to the gate of the semiconductor component according to the stored reference values of the gate voltage when a change in operating states of the semiconductor component is desired. | 04-22-2010 |
20100128505 | CURRENT MEASUREMENT IN AN INVERTER UNIT AND A FREQUENCY CONVERTER - A method and an arrangement of measuring inverter current, where the inverter is connected to and supplied by a DC intermediate circuit having two or more parallel capacitor branches connected between the positive and negative rail of the DC intermediate circuit, and the capacitance of the capacitor branches being known. The method comprises the steps of measuring the current of one of the parallel capacitor branches, and determining from the measured current the magnitude of the inverter current. | 05-27-2010 |
20110198064 | COOLING STRUCTURE FOR ELECTRONIC DEVICE, AND A METHOD - This disclosure relates to a cooling structure for an electronic device including an inlet for conveying a flow in a first flow direction towards a first component and an outlet for conveying the flow further. To deter dirt particles from proceeding to electronic components, the cooling structure can include a second flow channel, which starts from a port oriented transversely to the first flow direction or away therefrom and receives part of the flow from the inlet, and which conveys the part of the flow to an electronic component located in the second flow channel. | 08-18-2011 |
20120098577 | GATE DRIVER UNIT FOR ELECTRICAL SWITCHING DEVICE - An exemplary apparatus and method for using intelligent gate driver units with distributed intelligence to control antiparallel power modules or parallel-connected electrical switching devices like IGBTs is disclosed. The intelligent gate drive units use the intelligence to balance the currents of the switching devices, even in dynamic switching events. The intelligent gate driver units can use master-slave or daisy chain control structures and instantaneous or time integral differences of the currents of parallel-connected switching devices as control parameters. Instead of balancing the currents, temperature can also be balanced with the intelligent gate driver units. | 04-26-2012 |
20120223744 | CONTROL OF SEMICONDUCTOR COMPONENT - An exemplary method and a control circuit are disclosed for controlling a power semiconductor component by producing a control signal (Ucin) for controlling the component, forming a second control signal (Ucout) in the potential of the controlled component from the control signal (Ucin), measuring a current flowing through the component, and comparing the measured current with a set limit. A fault signal (Ufault) having a logical state is provided on the basis of the comparison between the measured current and the set limit, producing a component control signal (Uave) from the fault signal (Ufault) and the second control signal (Ucout). If a fault is indicated, the component control signal has a value between high and low states, and otherwise the state of the component control signal (Uave) equals the state of the second control signal (Ucout). | 09-06-2012 |
20130328599 | GATE DRIVER UNIT FOR ELECTRICAL SWITCHING DEVICE - An exemplary apparatus and method for using intelligent gate driver units with distributed intelligence to control antiparallel power modules or parallel-connected electrical switching devices like IGBTs is disclosed. The intelligent gate drive units use the intelligence to balance the currents of the switching devices, even in dynamic switching events. The intelligent gate driver units can use master-slave or daisy chain control structures and instantaneous or time integral differences of the currents of parallel-connected switching devices as control parameters. Instead of balancing the currents, temperature can also be balanced with the intelligent gate driver units. | 12-12-2013 |
20140375362 | ACTIVE GATE DRIVE CIRCUIT - An exemplary gate drive circuit and method are disclosed for controlling a gate-controlled component, the gate drive circuit having a PI controller adapted to receive an input reference signal and to control a gate voltage of the gate-controlled component. The gate drive circuit can include a first feedback loop for the PI controller, the first feedback loop having a first gain (k | 12-25-2014 |