Abstract: 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.

Abstract: In a vehicle control apparatus, a system controller that overall controls an engine controller and a converter controller is provided. The system controller drives, through the converter controller, a generator with a generator-rotational-speed command value ?c_ref1 smaller than idling maintenance minimum rotational speed ?e_idol_min of an engine, starts, through the engine controller, fuel injection to the engine after elapse of a predetermined time, and, when the rotational speed of the engine reaches a predetermined rotational speed threshold ?e_th that is larger than the generator-rotational-speed command value ?e_ref and smaller than the idling maintenance minimum rotational speed ?e_idol_min, outputs, to a converter, a gate cutoff signal GSTOP for turning off energization to the generator.

Abstract: A power storage device is electrically connected to a first input and output end located on the opposite side of a direct-current common section in a second power converter. According to an input form of electric power, a first power converter operates as a DC/AC converter or an AC/DC converter. The second power converter operates as a DC/AC converter, an AC/DC converter, or a DC/DC converter. The power storage device is charged using direct-current power supplied from the direct-current common section or the first input and output end side. The power storage device discharges desired direct-current power to the direct-current common section or the first input and output end side. A control device freely adjusts, according to the input form of the electric power, the voltage of the direct-current common section to a desired voltage including a high voltage or a low voltage.

Abstract: A power conversion device formed of a converter for rectifying a single-phase AC voltage to a DC voltage and an inverter for driving an AC motor by converting the DC voltage to an AC voltage includes: a first compensation unit that uses a frequency component twice the frequency of the single-phase AC voltage with respect to the DC voltage outputted from the converter or a current outputted from the inverter as a compensation value for at least one of a torque command value, a current command value, a voltage command value, a frequency command value, and a phase angle command value; and a second compensation unit that uses the DC voltage outputted from the converter or a current outputted from the inverter after being subjected to low frequency cut-off processing and gain processing.

Abstract: 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.

Abstract: A hybrid-vehicle power generator control apparatus. Based on a difference electric power value, which corresponds to the difference between an electric power generator power command value given by a higher-hierarchy control unit and an output voltage value of an electric power generator, an electric power generator control unit calculates an electric power generator rotation speed command value and based on the calculated electric power generator rotation speed command value, the electric power generator control unit PWM-controls an output of the electric-power conversion system that performs electric conversion between the electric power generator and a battery, so that the rotation speed of the electric power generator is made to keep track of the electric power generator rotation speed command value and the output electric power value of the electric power generator is made to keep track of the electric power generator power command value.

Abstract: A propulsion control apparatus includes first and second power converting units capable of performing bidirectional power flow control, an ACL provided on each alternating-current end side of the power converting units, a first switching device performing connection switching to connect a power storage device or a direct-current overhead wire to each direct-current end of the power converting units, a second switching device switching connection of the alternating-current end of the first power converting unit to either the ACL or an AC motor side, a third switching device switching connection of the alternating-current end of the second power converting unit to either the ACL or the AC motor side, a fourth switching device switching connection of the AC motor to either the first power converting unit side or the second power converting unit side, and a control unit controlling operations of the power converting units and the switching devices.

Abstract: 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.

Abstract: A propulsion control device of a hybrid vehicle that enables, during an operating state of a train, flexible control corresponding to the operating state includes a total control section that totally controls a power generating device, a power storage device, and a load device. The total control section monitors total generated power in all converters in a train formation and controls, on the basis of the total generated power and a fuel consumption characteristic of engines, speed we of the engines and generated power of the converters to further reduce a total fuel consumption in the formation.

Abstract: A propulsion control apparatus of an electric motor vehicle includes a first power converter that operates as a DC/AC converter, an AC/DC converter, or a DC/DC converter, a second power converter that operates as a DC/AC converter, an AC/DC converter, or a DC/DC converter, a first power storage device and a second power storage device functioning as a direct-current power supply source that is charged using direct-current power supplied from a direct-current common section or a first input output end side or discharges direct-current power to the direct-current common section or the first input and output end side, and a control device that controls operations of the first power converter, the second power converter, the first power storage device, and the second power storage device.

Abstract: 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.

Abstract: 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 ?c_ref1 for the generator on the basis of a differential voltage value ?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 ?c_ref1 such that the rotational speed ?c of the generator follows the rotational-speed command value ?c_ref1 and also such that the DC voltage Vdc follows the DC-voltage command value Vdc_ref so as to prevent overvoltage.

Abstract: When a continuous short circuit occurs between both terminals of a battery pack, fault, destruction and rupture of the battery can occur. Further, when a momentary short circuit occurs, a user may continue to use, without knowing thermal and electrical damage to the batteries, and reliability for the batteries is impaired, To overcome the problem, in a battery pack configured by connecting a plurality of storage batteries in series, at least one first storage battery is included which has a low capacity compared to second storage batteries during high-rate discharge, and the first storage battery undergoes polarity inversion during external short circuit, thereby preventing the other batteries from becoming damaged. There are also included a detector that detects voltage of the first storage battery, and a fault signal generator that generates an output fault signal when a voltage detected by the detector inverses.

Abstract: 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.

Abstract: A state-of-charge estimation apparatus connected to a power storage device having cell batteries, and estimating a state of charge of the power storage device, the apparatus including a first SOC computation unit computing a current integration value based on a total current from a current detector detecting the total current flowing to the storage device from a power conversion device using a previous SOC value as an initial value, and outputting the integration value as a first state-of-charge estimated value, and a second SOC computation unit estimating, after discharge suspension in the storage device, an open-circuit voltage based on a total voltage on a connection point between the conversion device and the storage device, a previous value of the total voltage, and a gain with time passage after discharge suspension in the storage device, and outputting the open-circuit voltage as a second state-of-charge estimated value.

Abstract: A state-of-charge estimating apparatus includes at least a first arithmetic unit configured to calculate, as a first estimation value, the present estimation value calculated based on a battery capacity, the last estimation value, and an electric current flowing in and out between a current control apparatus, which controls charge and discharge amounts of a power storage apparatus, and the power storage apparatus, and a second arithmetic unit configured to calculate, during constant current control, as the present value of a second estimation value, an estimation value calculated based on an equivalent circuit model of a battery and a voltage of the battery and, on the other hand, calculate, during constant voltage control, as the second estimation value, the present estimation value calculated taking into account a resistance change of the battery based on the equivalent circuit model of the battery and the voltage of the battery.

Abstract: 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.

Abstract: A power storage device is electrically connected to a first input and output end located on the opposite side of a direct-current common section in a second power converter. According to an input form of electric power, a first power converter operates as a DC/AC converter or an AC/DC converter. The second power converter operates as a DC/AC converter, an AC/DC converter, or a DC/DC converter. The power storage device is charged using direct-current power supplied from the direct-current common section or the first input and output end side. The power storage device discharges desired direct-current power to the direct-current common section or the first input and output end side.

Abstract: 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.

Abstract: A main landing gear bay 15 which is formed inward of a fuselage 11 of an aircraft 10 from an opening portion provided in a surface of the fuselage 11 so as to store a main landing gear 13 of the aircraft 10, the main landing gear bay 15 including inclined regions 16 and 17 that are continuous from a rim of the opening portion to the fuselage 11 surface in an airframe axis direction X of the aircraft 10, wherein the inclined regions 16 and 17 are formed so as to have a larger depth toward the rim of the opening portion. Since the inclined regions 16 and 17 are formed so as to have a larger depth toward the rim of the opening portion, the aerodynamic drag acting on the main landing gear bay can be reduced. Accordingly, the fuel consumption of the aircraft can be improved.