Patent
Current-source power converting apparatus with self-extinction devices
TLDR
In this paper, a three phase AC-DC converter composed of self-extinction devices for converting an AC power furnished from an three-phase AC power source into a DC power and a DC-AC inverter connected with the ACDC converter through a DC reactor for re-converting the DC power into a 3 phase AC power to supply the reconverted power for a load.Abstract:
A current-source power converting apparatus having a three phase AC-DC converter composed of self-extinction devices for converting an AC power furnished from an three phase AC power source into a DC power and a DC-AC inverter connected with the AC-DC converter through a DC reactor for re-converting the DC power into a three phase AC power to supply the re-converted power for a load. When the failure of the AC power source is detect according to one embodiment, the AC power source is detached from the AC-DC converter and a battery is connected between arbitrary two phases at the input end of the AC-DC converter. After that, the DC power of the battery is supplied for the DC-AC inverter intermittently by switching the corresponding self-extinction devices of the AC-DC converter and controlled by varying the duty ratio of the switching operation.read more
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Technique for decoupling the energy storage system voltage from the DC link voltage in AC electric drive systems
TL;DR: An ac electric drive system includes a bidirectional power semiconductor interface between a battery, or an auxiliary energy storage device, and a power inverter for boosting an input do voltage and for decoupling the dc link voltage from the input dc voltage such that the voltage is substantially independent of the input Do voltage and the parameters of the battery as mentioned in this paper.
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Integrated traction inverter and battery charger apparatus
TL;DR: An integrated traction inverter and battery charger apparatus which is capable of operating in either drive or charge modes is described in this paper. But the authors do not specify the charging mode of the charger.
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Sump pump drive system
TL;DR: In this paper, an improvement in a sump pump drive system of the type operable in a normal or emergency mode, powered in the normal mode by a single phase AC source and having an AC-to-DC converter, a DC standby source, a Sump pump and a pump drive motor is presented.
Patent
Power transfer and voltage level conversion for a battery-powered electronic device
John Hayes,David R. Irvin +1 more
TL;DR: In this paper, a power supply device and system for providing power to a portable electronic device is presented. But the power supply devices are not designed to be portable and the system is not suitable for outdoor use.
Patent
Power Conversion Apparatus
Hideyo Suzuki,Masashi Kosuga +1 more
TL;DR: In this paper, the cooling performance of a capacitor module used in a power conversion apparatus is improved by using a flow path forming body to form a cooling path through which cooling refrigerant flows.
References
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Patent
Uninterruptible power supply
TL;DR: In this paper, an uninterruptible power supply including a rectifier for receiving a first AC power signal, a battery for supplying a second DC power signal and a switch connected to receive the second dc power signal from the battery for producing the DC power output power when the first AC signal is interrupted.
Patent
Voltage control circuitry for UPS
TL;DR: A voltage control circuit for an uninterruptible power supply (UPS) involving a controlled rectifier operating from an input AC line to charge batteries and to hold them at a constant voltage is described in this paper.