DRS POWER & CONTROL TECHNOLOGIES, INC.
|DRS POWER & CONTROL TECHNOLOGIES, INC. Patent applications|
|Patent application number||Title||Published|
|20150222114||METHODS AND SYSTEMS OF IMPEDANCE SOURCE SEMICONDUCTOR DEVICE PROTECTION - An electrical network configured to suppress voltage transients is disclosed. The network includes a capacitor and an electrical impedance in parallel with a diode. The capacitor is in series with the parallel connected diode and electrical impedance, and the electrical network is configured to suppress voltage transients occurring across the series combination of the capacitor and the parallel connected diode and electrical impedance.||08-06-2015|
|20130070505||Inverter Control When Feeding High Impedance Loads - An inverter controller comprising a current regulator unit, a voltage regulator unit coupled to the current regulator unit, an inverter unit coupled to the voltage regulator unit, and a drive unit controlled by the inverter unit.||03-21-2013|
|20130051094||CASCADED FLYING CAPACITOR MODULAR HIGH VOLTAGE INVERTERS - A high voltage inverter is provided which includes a plurality of k-level flying capacitor H bridge modules, k being greater than 2, each having a positive dc terminal, a negative dc terminal, and two ac terminals, a connecting unit for connecting said ac terminals of said plurality of k-level flying capacitor H bridge modules in series to form a cascading set of modules, and a dc source connected to an ac source and having a transformer, a rectifier rectifying an output voltage of said transformer, and a capacitor connected between the positive and negative dc terminals.||02-28-2013|
|20110185206||MULTIPLE VOLTAGE GENERATOR AND VOLTAGE REGULATION METHODOLOGY FOR POWER DENSE INTEGRATED POWER SYSTEMS - An integrated power system suitable for simultaneously powering marine propulsion and service loads. The system includes: (a) at least one generator configured with at least first and second armature windings configured to output respective first and second alternating current power signals of different voltages, the at least two armature windings positioned within the same stator slots so that they magnetically couple; (b) at least first and second rectifier circuits coupled to said generator to convert said first and second alternating current power signals into first and second direct current power signals; (c) a first load to which said first direct current power signal is coupled and a second load to which said second direct current power signal is coupled.||07-28-2011|
|20110080685||ELECTRICALLY ASSISTED SAFING OF A LINEAR ACTUATOR TO PROVIDE SHOCK TOLERANCE - Electrically assisted safing of a solenoid linear actuator to provide shock tolerance is provided for a solenoid actuator, the actuator having an armature and at least one electromagnetic inductive coil. A controller, receiving an output from a motion sensor, adjusts an electrical power input to the electromagnetic inductive coil. When the output of the motion sensor indicates onset of an environmental transient exceeding a predetermined threshold of intensity, the controller adjusts the electrical power input such that an electromagnetic field generated by the coil is sufficient to restrain the armature in a desired position during the environmental transient.||04-07-2011|
|20100085789||Voltage Drive System With Hysteretic Current Control And Method Of Operating The Same - A voltage drive system is provided having a plurality of modulators and a plurality of cascaded switching circuits which collectively generate a single-phase output signal to a load. Each modulator receives a phase current error and has an adder which generates a modulated phase current error based on the phase current error and based on a signal having a phase. For each respective modulator, the phase of the respective signal is different. Each respective modulator changes a respective gate input when the respective modulated phase current error changes from being within a predetermined current range to being outside of the predetermined current range. Each respective switching circuit receives the respective gate input and generates a respective output terminal voltage based on the respective gate input. The change in the respective gate input effectively causes a switching event of the respective switching circuit.||04-08-2010|
|20080298103||FOUR POLE NEUTRAL-POINT CLAMPED THREE PHASE CONVERTER WITH LOW COMMON MODE VOLTAGE OUTPUT - A four pole, three-phase, NPC converter that produces virtually no common mode voltage. The low common mode voltage output is achieved by constraining the switch states of the NPC converter. A fourth pole and associated control balance the upper and lower DC link voltages. The converter may be an inverter or a rectifier.||12-04-2008|
Patent applications by DRS POWER & CONTROL TECHNOLOGIES, INC.