Patent
Current-type converter apparatus
TLDR
In this article, a current-type converter including a DC power source, a current type converter, a load and a converter control unit, the converter control units controlling so as to cause as least two states among a powering conduction state for supplying power from a DC source to a load within predetermined control periods of both a powering control mode and a regenerative control mode.Abstract:
A current-type converter including a DC power source, a current-type converter, a load and a converter control unit, the converter control unit controlling so as to cause as least two states among a powering conduction state for supplying power from said DC power source to said load within predetermined control periods of both a powering control mode and a regenerative control mode, a regenerative conduction state for regenerating power supplied from the load toward the DC power source, and a reflux conduction state for short-circuiting the output of the current-type converter and returning the circuit current of the load, and the converter control unit varying the period length of respective states.read more
Citations
More filters
Patent
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.
Patent
System for precharging a dc link in a variable speed drive
TL;DR: In this article, a variable speed drive (104) with a converter (202) that is controllable to precharge a DC link (204) is provided, where the converter converts a fixed line frequency, fixed line voltage AC power from an AC power source (102) into DC power.
Patent
A braking control system for an electric vehicle
Masayuki Toriyama,Kenji Tamaki,Satoshi Honda,Shoji Motodate,Yoshihiro Nakazawa,Takaaki Fujii,Shigemi Sasaki +6 more
TL;DR: In this article, a regenerative braking control system consumes energy generated in a period corresponding to an angle ϑ₁ which starts in a half of a period of an AC voltage produced in a drive motor during the braking of the drive motor.
Patent
Electric charging system and electric vehicle
TL;DR: In this paper, an electric vehicle includes a power receiving connector that is connected to a battery via a relay, and an electric charger including a power supply connector that was connected to the power receiving connectors.
Patent
Electric automobile driving apparatus
TL;DR: An electric automobile driving apparatus installed in an electric automobile for driving the same can be found in this paper, where the driving force of the electric automobile is generated by a main battery as the rotating force of a motor.
References
More filters
Patent
Control apparatus for elevator
TL;DR: In this paper, a control apparatus for an elevator comprising a temperature sensor which senses the temperature of the rotor of an induction motor during the stoppage of a cage, and a voltage/frequency control device which calculates the secondary winding resistance value of the induction motor on the basis of the output value of temperature sensor and which vector-controls a power conversion device by the use of the calculated secondary wound resistance value, is presented.
Patent
Apparatus for controlling an A-C power elevator
TL;DR: In this article, a power regenerating inverter is used for controlling an A-C powered elevator in which A-c electric power is converted into D-C electric power through a rectifier, and the D-c electrical power is then converted into A-e c electric power of a variable frequency via an inverter.
Patent
Line-regenerative motor controller with current limiter
TL;DR: In this article, an AC motor drive includes a power converter which supplies current to a DC bus from three-phase power lines, and it regenerates the power to the power lines by controlling line current such that it is substantially in-phase with the applied line voltages.
Patent
Protection system for immunizing a controlled d-c power supply against a-c line voltage interruptions
TL;DR: In this article, the authors proposed to replace the feedback signal for the command signal in a rectifier bridge during a power interruption, which will shut the rectifier down and will force it to produce only a minimum amplitude d-c bus voltage when power is later restored.
Patent
Current-source power converting apparatus with self-extinction devices
TL;DR: 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.