Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Japan Storage Battery Co., Ltd.

Kiyoharu Anzai

Masaru Kobayashi

Hirotoshi Maekawa

Noriyuki Wada

Takahiko Kobayashi

Daiki Matsuura

Akihiko Iwata

Takahiro Urakabe

Tatsuya Okuda

Matahiko Ikeda

Toshiyuki Kikunaga

Ryoji Nishiyama

Masato Mori

Hiroaki Morimoto

Yuji Kuramoto

Yuuji Kuramoto

Masakazu Nakayama

Toshiaki Hayashi

Hideji Nakamura

Motoshi Kiribayashi

Shinji Fujihara

Makoto Wanezaki

Eiji Tutiya

A synchronous machine control device is provided with a magnet state outputter that estimates a magnetic flux of a permanent magnet forming the magnetic field of a synchronous machine. In a magnet state correction value calculation mode, the magnet state outputter calculates a magnet state correction value. In a magnet state estimation mode, the magnet state outputter obtains, from a magnet state estimation device, a magnetic flux estimation value of the permanent magnet under a given condition of a magnetic flux command and a &#x3b4;-axis current command and controls a magnet state corrector to correct the magnetic flux estimation value of the permanent magnet obtained by the magnet state estimation device, by use of the magnet state correction value.

Synchronous machine control device

A synchronous machine control apparatus for correcting a rotor position error that is a difference between a rotor position of a synchronous machine and a rotor position detected by a position detection unit is provided with a current control device for performing control in such a way that respective current command values and respective current detection values in a generation direction (&#x3b3; axis) of an armature interlinked magnetic flux and in a direction perpendicular (&#x3b4; axis) to the generation direction of the armature interlinked magnetic flux coincide with each other and with a magnetic flux calculation device for calculating a phase of an armature interlinked magnetic flux, based on an armature current detection value of the synchronous machine and an armature voltage command value therefor; the rotor position error is corrected based on the &#x3b3;&#x3b4;-axis current command values and a phase of the armature interlinked magnetic flux.

Synchronous machine control apparatus

A synchronous machine controller includes a position detecting unit that detects a position of a rotor, a current detecting unit that detects an armature current, a current command generating unit that generates first and second current commands, a voltage command generating unit that generates a voltage command on the basis of the current commands, the position of the rotor, and the armature current, a power converting unit that outputs a voltage to the synchronous machine on the basis of the voltage command, a magnetic flux estimating unit that estimates an armature interlinkage flux on the basis of a rotational velocity calculated from a variation of the position of the rotor, the voltage command, and the armature current, and a magnet state estimating unit that estimates a magnetic flux or a temperature of the permanent magnet from the position of the rotor, the armature current, and the armature interlinkage flux.

Synchronous machine controller

A synchronous machine control apparatus is characterized by including a magnet condition estimation unit () that estimates the temperature or the magnetic flux of a permanent magnet that forms the magnetic field of a synchronous machine (), and is characterized in that the magnet condition estimation unit () coordinate-converts an armature current into currents on the &#x3b3;-&#x3b4; axis consisting of the &#x3b3; axis and the &#x3b4; axis that is perpendicular to the &#x3b3; axis, based on the rotor position and the estimated &#x3b3; axis, and estimates the temperature or the magnetic flux of the permanent magnet, based on the control command for the synchronous machine () and the &#x3b3;-&#x3b4; axis currents.

A control command generator that generates an armature interlinkage flux command and a torque current command by a torque command, a rotation speed, and an operation target command, includes a first flux command generator generating a first flux command by the toque command or the torque current command, a second flux generator generating a second flux command by the torque command or the torque current command and the rotation speed of the synchronous machine, a command allocation setting unit setting an allocation coefficient equivalent to an allocation ratio of the two first and second flux commands by the operation target command, a flux command adjuster outputting an armature interlinkage flux command by the two flux commands and the allocation coefficient, and a torque current command generator generating the torque current command by the torque command and the armature interlinkage flux command.

Three or more circuits, in which series-connected low-voltage and high-voltage side switches including MOSFETs including parasitic diodes are connected across positive and negative terminals of each of smoothing capacitors, are connected in series. One of elementary series circuits, each including a capacitor and an inductor, is disposed between any adjacent two of the circuits with the elementary series circuits set to have the same period of resonance. The MOSFETs of rectifier circuits are brought into an ON state simultaneously with the MOSFETs of a driving inverter circuit and brought into an OFF state earlier than the MOSFETs of the driving inverter circuit by a period of time not exceeding a time period equal to (period of resonance)/2. A resonance phenomenon of the capacitor and the inductor is used and conduction loss in the rectifier circuits is reduced in DC/DC power conversion performed through charging and discharging operation of the capacitor.

DC/DC power converting apparatus

Three or more circuits including a driving inverter circuit and rectifier circuits are connected in series, each of the circuits including a high-voltage side MOSFET and a low-voltage side MOSFET connected in series as well as a smoothing capacitor having positive and negative terminals between which the MOSFETs are connected. LC series circuits, each including a capacitor and an inductor, are disposed individually between one specific circuit and the other circuits with periods of resonance of the LC series circuits made equal to one another. In performing DC/DC power conversion through charging and discharging operation of the capacitors, a resonance phenomenon of the LC series circuits is used to improve conversion efficiency and achieve a reduction in size of the apparatus structure.

A protection operation control part switches a gate signal interruption switch for protection of power elements to a gate signal interruption side, and invalidates a switching signal from a hybrid control unit to place transistors into a nonconducting operation. A motor current signal from a motor current detector is converted into a current value by a motor current calculation unit, and is inputted to a short-circuit abnormality detection unit through a motor control arithmetic part, and a short-circuit abnormality is detected. At a time of detecting the short-circuit abnormality, an internal combustion engine operation instruction unit gives an instruction to an internal combustion engine control unit so as to limit output of an internal combustion engine, and releases a conduction state of an abnormal motor current.

Vehicular power control apparatus

In order to provide a battery charging state arithmetic operation device which can judge a charging state of a battery currently being used easily and in a short time, there are provided battery voltage calculation meanswith specified load for calculating a first and a second battery voltages when a battery current is at a specified load current value from a first I-V characteristic of the battery which is in a first state as a currently used state and is stored in first I-V characteristic storage meansand a second I-V characteristic which is in a second state where the amount of remaining energy is small and is stored in second I-V characteristic storage means, and SOC arithmetic operation meansfor calculating an SOC (charging state) of the battery in the first state by using the first and the second battery voltages calculated.

Battery charging state arithmetic operation device for calculating charging state of battery, and battery charging state arithmetic operation method

The present invention relates to a power generation controller of a vehicle power generator, which includes: voltage detection means for sampling a voltage of a battery based on a reference clock signal; duty range setting means for setting a range for an ON/OFF ratio of a field switching element from the rotation speed of the power generator; control duty computation means for computing the ON/OFF ratio of the field switching element based on thus set duty range from a deviation between a power generation target voltage and voltage information as a result of sampling; and field PWM drive means for controlling the ON/OFF switching operation of the field switching element with an interval based on the reference clock signal from the computed ON/OFF ratio.

Power generation controller of vehicle power generator

A controller of a rotating electric machine for a vehicle has a magnetic field electric current command arithmetic device for commanding a magnetic field electric current by the command of a torque and electric power command arithmetic device, an electric power converter functioning as a rectifier or an inverter, and a magnetic field electric current command restraining device for restraining a three-phase line electric current by restraining and controlling an output of the magnetic field electric current command arithmetic device when the rotating electric machine functions as an electric generator.

Controller of rotating electric machine for vehicle

A motor controller improves reliability and enables stable and high-accuracy control by detecting a current value running through the motor detected by current detectors by preventing changes in ambient environment, particularly the influence of temperature variations. The arithmetic and control unit of the motor controller has a storage unit for storing current detection characteristic compensation data for compensating for fluctuations in the characteristics of the current detectors, a current value computing device for computing current values by correcting detection currents from the current detectors, and a device for computing and generating drive signals for controlling the switching of the power elements based on the computed current values.

Electric vehicle motor controller with temperature variation compensation

Power module

Conventionally, there is a problem that it is impossible to provide an analog signal detecting circuit having high reliability and long lifetime under a bad environment since a photocoupler is used for electrical insulation of a digital signal. Then, an analog signal detecting circuit is provided with a carrier wave generating unit for generating a carrier wave, a pulse width modulating unit for pulse width modulating an analog signal inputted from the signal input terminal by using the carrier wave generated by the carrier wave generating unit and for outputting a digital signal, a reverse level shift HVIC for transmitting the digital signal from one power supply system to the other power supply system, and a demodulation unit for demodulating the digital signal transmitted to the other power supply system into an analog signal and for outputting it to a signal output terminal. As a result, even in the case where reference potentials are different from each other at signal input/output terminals, an analog signal can be detected.

Analog signal detecting circuit, and AC side current detector of semiconductor power conversion device

A power inverter having high reliability in a severe use environment with reduced delay in switching times and rounding of waveforms. Specifically, the power inverter utilizes switching element drive and protection circuits, and a control arithmetic unit (CAU) formed on a single substrate through a high-voltage integrated circuit. Additionally, the ground potentials (GND) of the switching element drive and protection circuits, and the CAU are made equal to the ground potentials of the switching elements and the power inversion portion of the circuit. Finally, the power inversion portion and a smoothing capacitor are constructed using the same module as the substrate.

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Tokyo, Japan

Kiyoharu Anzai