Mitsubishi Electric Corporation

Mitsubishi Corporation

Mitsubishi Denki Kabushiki Kaisha

Keita Hatanaka

Hidetoshi Kitanaka

Hisanori Yamasaki

Masaki Kono

Yasuhiko Wada

Yuruki Okada

Shoji Yoshioka

Takahiko Kobayashi

Yoshinori Yamashita

Sho Kato

Toshihiro Wada

Daisuke Ito

Yoshihiko Kinpara

Akiko Tabuchi

Takeshi Tanaka

Yasushi Matsumura

Naoki Nishio

Mitsuo Kashima

Kiyoshi Eguchi

Takafumi Maruyama

Sho Shiraga

Hideto Negoro

Toshiaki Takeoka

Kenichi Kusano

Syuji Ishikura

Syoichi Kawamoto

Hideo Obi

Takahiro Kikuchi

Kouichi Arisawa

Yamashita Yoshinori

Yamasaki Hisanori

A battery internal state estimation apparatus including: an internal state estimation unit, which inputs at least one of measured values obtained by a battery measurement unit at preset sampling intervals including a current flowing through a battery, an inter-terminal voltage, a temperature of the battery, and an ambient air temperature, for estimating, based on the measured values, at least one of a state of charge, internal temperature, capacity, and internal resistance of the battery as an internal state of the battery; and an internal state correction unit for correcting estimated values of the internal state obtained by the internal state estimation unit so that the estimated values are not contradictory at least to qualitative properties of the battery, and outputting the corrected values to an output unit.

Battery internal state estimation apparatus

A hybrid-vehicle power generator control apparatus includes an integrated control unit that issues a driving command and a control command to an engine control unit and an electric-power conversion system control unit, respectively, based on requested electric power requested by a load apparatus, and a limiter that limits the control command from the integrated control unit such that when rotation frequency of an electric power generator is same as or lower than a predetermined value, the value of torque generated by the electric power generator becomes smaller than the value of torque generated by an engine. A limitation of the control command by the limiter prevents torques of the engine and the electric power generator from stepping out of the stable operating points.

Hybrid vehicle power generation control apparatus

A hybrid drive system includes first and second power supply devices that supply direct-current power; first and second power storage devices are respectively connected to the first and second power supply devices so as to accumulate or discharge the direct-current power; a first load device that receives a supply of the direct-current power from the first power supply device and the first power storage device and drives a first load; and a second load device that receives a supply of the direct-current power from the second power supply device and the second power storage device and drives a second load. The hybrid drive system includes an inter-group contactor for electrically connecting and disconnecting input terminals of the first power storage device and the second power storage device.

Hybrid drive system

A propulsion control apparatus includes a first power converter that operates as a DC/AC converter, a DC/DC converter, or an AC/DC converter, a second power converter, a first control device that controls operations of a first motor and the first power converter, and a second control device that controls operations of a second motor and the second power converter, wherein a power storage device is configured to be able to connect to a second input/output end side and functions as a direct-current power supply that is charged with direct-current power supplied from the second input/output end side or discharges direct-current power to the second input/output end side.

Propulsion control apparatus for railroad vehicle

In a host controller included in a vehicle control apparatus, a generator-torque-command generating unit monitors an abnormal operation of the engine on the basis of an engine power generation command and a detection signal of a rotating speed detector, switches, when the abnormal operation of the engine is detected, a generator torque command to the lowest value of a torque command value for abnormal time set in advance as the generator torque command, thereafter, gradually increases the generator torque command, and, after recording, as a torque limit value, the magnitude of the generator torque command (a torque command value for abnormal time 3) at the time when the abnormal operation of the engine is detected again, switches the generator torque command to a torque command value for abnormal time (a torque command value for abnormal time 2) having a value smaller than the torque limit value.

Vehicle control apparatus

An electric locomotive includes a first control line and DC buses laid between couplers, a power storage device connected to the DC buses, and a DC/DC converter that executes charge and discharge control with respect to the power storage device. A non-powered vehicle includes DC buses connected to the DC buses via a coupler, a second control line, a power storage device connected to the DC buses via a circuit breaker, and a BMU that manages the power storage device. The DC/DC converter executes power accumulation control with respect to the power storage device and power accumulation control with respect to the power storage device. When having determined abnormality of the power storage device, the BMU controls the circuit breaker to be turned off, thereby cutting off electrical connection between the power storage device and the DC buses.

Railway vehicle system

A battery-condition monitoring device that monitors a condition of the battery through discharge thereof includes a discharger and a discharge control device. The discharger includes a discharge circuit having a load resistor and a switching element connected in series between a positive electrode of the battery and a negative electrode thereof. The discharge control device controls an open/close operation of the switching element. The discharge control device adjusts the resistance value of the load resistor in the discharger, thereby enabling an adjustment of a discharge current.

Discharge device for electricity storage device

The present invention relates to a parallel electricity-storage system that includes: a plurality of DC buses; a number of sets of battery banks formed by serially connecting one or a plurality of battery cells capable of charging and discharging, the number thereof being larger than number of the DC buses; a switch provided for each of the battery banks and serially connected to the battery bank to switch connection between the battery bank and each of the DC buses; charge/discharge circuits as many as the number of the DC buses that charge the respective battery banks via the DC buses or supply discharged power from the respective battery banks received via the DC buses to a load device; a voltage detector that detects a voltage of the respective battery banks; and a controller that controls the switch based on at least a voltage detected by the voltage detector.

Parallel electricity-storage system and control method thereof

A charging and discharging device includes a switching circuit, an input of which is connected to a power supply, the switching circuit adjusting an output current IB to a power storing unit connected to an output of the switching circuit, and a control unit configured to generate an ON/OFF signal DGC to the switching circuit. The control unit includes a temperature-rise control unit configured to separately generate, based on a signal BTMP equivalent to the temperature of the power storing unit, a control signal FC for adjusting a ripple component of the output current IB and a control signal OFS for adjusting a non-ripple component of the output current IB and generates the ON/OFF signal DGC based on the control signal FC and the control signal OFS and outputs the ON/OFF signal DGC to the switching circuit.

Charging and discharging device to increase battery temperature by controlling ripple current

A hybrid drive system includes first and second power supply devices supplying direct-current power, first and second power storage devices respectively connected to the first and second power supply devices and accumulating or discharging direct-current power, a first load device receiving direct-current power from the first power supply device and the first power storage device and driving a first load, a second load device receiving direct-current power from the second power supply device and the second power storage device and driving a second load, a first diode including an anode side terminal connected to an output side of the first power storage device, a second diode including an anode side terminal connected to an output side of the second power storage device, and an auxiliary power supply device to which a connection terminal of cathode side terminals of the first and second diodes is connected as an input terminal.

A power-generation control unit controls the amount of power a generator can generate, when it is connected to an engine, by controlling a converter that converts AC power output by the generator to DC power. The power-generation control unit calculates a rotational-speed command value &#x3c9;c_reffor the generator on the basis of a differential voltage value &#x394;Vdc between a DC-voltage command value Vdc_ref for a power storage device and a DC voltage Vdc of a DC link portion; and executes a PWM control on an output of the converter on the basis of this rotational-speed command value &#x3c9;c_refsuch that the rotational speed &#x3c9;c of the generator follows the rotational-speed command value &#x3c9;c_refand also such that the DC voltage Vdc follows the DC-voltage command value Vdc_ref so as to prevent overvoltage.

Control device for hybrid vehicle

A high-order control unit provided in a control device for a hybrid vehicle includes an elevation MAP that is used in common for up and down lines and in which at least two predetermined elevation values on a running track are described, and an energy estimation unit that estimates a target charge/discharge amount SOC_ref with respect to a power storage device on the basis of a traveling direction signal Rev expressing a traveling direction of a vehicle, distance information Dis from a distance translation unit, and information on the elevation MAP, to control a power generation device on the basis of the target charge/discharge amount SOC_ref.

A first power converter connected to a plurality of motors is configured to operate as a DC/AC converter or an AC/DC converter. A second power converter connected to a generator is configured to operate as a DC/AC converter or the AC/DC converter. A control device is configured to cause the first power converter to supply alternating-current power from the first power converter to at least one motor among the motors and cause the second power converter to supply alternating-current power from the second power converter to a motor other than the motor to which the alternating-current power from the first power converter is supplied.

Propulsion control apparatus of engine hybrid railroad vehicle

An electric vehicle propulsion control device having a power storage device includes: a first switch configured to perform opening and closing of a circuit between an overhead wire and a power converting unit; a second switch configured to perform opening and closing of a circuit between the power converting unit and a motor; a switching unit configured to select a terminal on a side of the power converting unit to which the first switch is connected or a terminal on a side of the power converting unit to which the second switch is connected and connect the terminal to the power storage device; and a control unit configured to control the power converting unit, the first switch, the second switch, and the switching unit to switch a connection destination of the power converting unit and cause the power converting unit to operate as an inverter or a DC/DC converter.

Electric vehicle propulsion control device and railway vehicle system

A propulsion control apparatus for an electric motor car includes: an inverter apparatus connected to a DC power supply; a motor connected to an output of the inverter apparatus; a converter apparatus connected to an input of the inverter apparatus; and a power storage apparatus connected to an output of the converter apparatus, is configured to charge/discharge a part of power running power or regenerative power of the motor to/from the power storage apparatus. The converter apparatus includes a converter control unit that generates, based on a regeneration state signal as a signal indicating a suppression state of the regenerative power or regenerative torque or regenerative current equivalent to the regenerative power, a charging current command value, generates a charging and discharging current command value of the converter apparatus based on the charging current command value, and performs control.

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Tokyo, Japan

Keita Hatanaka