Abstract: An electric source control apparatus has: a determining device for determining whether a converter operates in a first mode or a second mode, wherein the first mode prioritizes increase of efficiency of the electric power conversion than the second mode does and the second mode prioritizes suppression of increase of element temperature of the switching element than the first mode does; and a controlling device for controlling the converter so that (i) a switching pattern becomes a first pattern, if the converter operates in the first mode and (ii) the switching pattern becomes a second pattern, if the converter operates in the second mode, wherein the first pattern is capable of increasing the efficiency of the electric power conversion more than the second pattern is and the second pattern is capable of suppressing the increase of the element temperature more than the first pattern is.

Abstract: A controller for an electric motor system is provided. The electric motor system includes a DC power supply, a power converter, a smoothing capacitor, a three-phase AC motor, and a current sensor. The controller includes an electronic control unit. The electronic control unit is configured to control the power converter such that an inter-terminal voltage of the smoothing capacitor matches a first reference value. The first reference value is a value which is determined as the inter-terminal voltage of the smoothing capacitor when a phase current is equal to a second reference value. The electronic control unit is configured to correct a detection value of the current sensor so as to decrease a difference between the detection value and the second reference value when the inter-terminal voltage matches the first reference value and the detection value does not match the second reference value.

Abstract: An electrical source control apparatus controls a vehicle which travels by using an electrical source system including a first electrical source and a second electrical source. The electrical source control apparatus has: a controlling device for controlling the first and second electrical sources to set a residual power level of the first electrical source equal to first target amount and to set a residual power level of the second electrical source equal to second target amount, and a setting device for setting the first and second target amounts such that each of the first and second target amounts becomes smaller as a speed of the vehicle becomes larger. The setting device sets the first and second target amounts such that a rate of change of the second target amount to the speed is larger than a rate of change of the first target amount to the speed.

Abstract: A power supply system includes first and second DC power supplies and a power converter having first to fifth semiconductor elements and first and second reactors. The first and fourth semiconductor elements are electrically connected between a first node and a second node, and a first power line, respectively. Second and third switching elements are electrically connected between the first node and the second node, and a second power line, respectively. A fifth switching element is electrically connected between the first node and the second node. The first reactor is electrically connected in series with the first DC power supply, between the first node and the second power line. The second reactor is electrically connected in series with the second DC power supply, between the first power line and the second node.

Abstract: The purpose is to suppress ripple of voltage between terminals of smoothing condenser. Electric motor control apparatus is electric motor control apparatus that controls electric motor system having electrical power converter, smoothing condenser and three-phase AC electric motor, and has generating device that generates modulation signal by adding third harmonic signal to phase voltage command signal; controlling device that controls operation of electrical power converter by using modulation signal; and adjusting device that adjusts amplitude of third harmonic signal, adjusting device adjusts amplitude of third harmonic signal so that peak value of voltage between terminals of smoothing condenser in the case where amplitude of third harmonic signal is adjusted is smaller than peak value of voltage between terminals in the case where amplitude of third harmonic signal is not adjusted.

Abstract: A power supply system includes first and second DC power supplies and a power converter. The power converter includes first and third semiconductor elements electrically connected between respective nodes of a first node and a second node and a power line, second and fourth semiconductor elements electrically connected between respective nodes of the first node and the second node and a second power line, a fifth semiconductor element electrically connected between the first and second nodes, and first and second reactors. The first reactor is electrically connected in series with the first DC power supply, between the first node and the second power line. The second reactor is electrically connected in series with the second DC power supply, between the second power line and the second node. A control device controls on and off of the switching element included in the semiconductor element.

Abstract: A core has first to third magnetic leg portions. First and second windings wound on the first and second magnetic leg portions, respectively, are connected in series to constitute a first reactor. A third winding wound on the third magnetic leg portion constitutes a second reactor. A magnetic field produced from the first reactor and a magnetic field produced from the second reactor reinforce each other in the second magnetic leg portion, but weaken each other in the first magnetic leg portion. In accordance with increase in currents, the operation of the first and second reactors changes from a magnetically uncoupled mode in which the first and second reactors operate in a magnetically non-interfering state to a magnetically coupled mode in which the first and second reactors operate in a magnetically interfering state.

Abstract: An electrical source control apparatus controls a vehicle traveling by using a source system including a first source performing input/output of first power and a second source performing input/output of second power, capacity of the second source is smaller than that of the first source and output of the second source is larger than that of the first source. The apparatus has a controller programmed to select a first driving mode which prioritizes a fuel efficiency over a driving performance and a second driving mode which prioritizes the driving performance over the fuel efficiency based on a characteristic required for the vehicle from driving modes having different ratios of the first power with respect to a required power required for the source system, and control the first and second sources such that the input/output of the first power is performed in accordance with the ratio of the selected driving mode.

Abstract: A boost control apparatus is provided with: a controlling device configured (i) to perform first duty control by a first control parameter if output current that flows through a reactor is not near zero, and (ii) to perform second duty control by a second control parameter if the output current is near zero, during one-side element control for driving only one of a first switching element and a second switching element, each of which is connected to a reactor in series. A rate calculating device is provided that is configured to calculate a change rate of the output current to a change amount of a duty value in the first duty control and the second duty control. A control determining device is also provided that is configured to control the controlling device to perform the second duty control regardless of the output current, if the change rate is less than a predetermined value.

Abstract: A boost control apparatus is provided with a current value change amount detecting device configured to detect a change amount of output current that flows through the reactor in a first predetermined period during one-side element control for driving only one of a first switching element and a second switching element. A determining device is provided that is configured to determine that the output current is near zero if the change amount is less than a predetermined threshold value. A controlling device is also provided that is configured (i) to perform first duty control by a first control parameter if the output current is not near zero, and (ii) to perform second duty control by a second control parameter, which is different from the first control parameter, if the output current is near zero.

Abstract: An electric motor control apparatus controls an electric motor system that includes a power converter including switching elements and a three-phase alternating-current motor. The electric motor control apparatus includes generating devices for generating modulation signals by respectively adding corresponding triple harmonic signals to phase voltage command signals and a control device for controlling switching elements on the basis of a magnitude relation between each of the modulation signals and a carrier signal. Each of the triple harmonic signals includes a signal component that increases the absolute value of a peak value of a signal level of the corresponding modulation signal above the absolute value of a peak value of a signal level of the carrier signal in a corresponding one of phases.

Abstract: The purpose is to suppress ripple of voltage between terminals of smoothing condenser. Electric motor control apparatus is electric motor control apparatus that controls electric motor system having electrical power converter, smoothing condenser and three-phase AC electric motor, and has generating device that generates modulation signal by adding third harmonic signal to phase voltage command signal; controlling device that controls operation of electrical power converter by using modulation signal; and adjusting device that adjusts amplitude of third harmonic signal, adjusting device adjusts amplitude of third harmonic signal so that peak value of voltage between terminals of smoothing condenser in the case where amplitude of third harmonic signal is adjusted is smaller than peak value of voltage between terminals in the case where amplitude of third harmonic signal is not adjusted.

Abstract: Provided is a motor controller that controls a motor system including: a power converter, a smoothing capacitor, a three-phase AC motor, and a current sensor. The motor controller is provided with an electronic control unit. The electronic control unit specifies a target phase that is a phase of a second phase voltage command signal having a largest difference from a first phase voltage command signal having a signal level that is neither a maximum nor a minimum signal level, based on three phase voltage command signals generated from the detection value of the current sensor, and corrects the detection value of the current sensor, which detects the phase current of the target phase, such that a terminal voltage of the smoothing capacitor matches the desired voltage value.

Abstract: Provided is a motor controller for controlling a motor system including a power converter, a smoothing capacitor and a three-phase AC motor. The motor controller includes a generation unit configured to generate a modulation signal by adding a third harmonic signal to a phase voltage command signal, and a control unit configured to control an operation of the power converter using the modulation signal.

Abstract: A control apparatus for a voltage conversion apparatus includes: duty command signal generation means for generating a duty command signal corresponding to a duty ratio of switching elements carrier signal generation means for generating carrier signals corresponding to respective switching frequencies of the switching elements; switching control signal generation means for generating respective switching control signals of switching ON and OFF states of the switching elements, by comparing the duty command signal with the carrier signals; one arm driving control means for implementing one arm driving by alternatively turning on the first and second switching elements; and phase inverting means for bringing phases of portions, of the carrier signals, corresponding to switching at least right after arm switching, into a state where the phases are shifted from each other by 180 degrees between the first and second switching elements, at the time of the arm switching.

Abstract: An electrical source control apparatus controls a vehicle which travels by using an electrical source system including a first electrical source and a second electrical source. The electrical source control apparatus has: a controlling device for controlling the first and second electrical sources to set a residual power level of the first electrical source equal to first target amount and to set a residual power level of the second electrical source equal to second target amount, and a setting device for setting the first and second target amounts such that each of the first and second target amounts becomes smaller as a speed of the vehicle becomes larger. The setting device sets the first and second target amounts such that a rate of change of the second target amount to the speed is larger than a rate of change of the first target amount to the speed.

Abstract: A motor drive system control apparatus includes: a direct current power supply; a three-phase alternating current motor; a first power converter including switching circuits corresponding to each of three phases of the three-phase alternating current motor and a smoothing condenser disposed electrically in parallel with the switching circuits; an estimating device for estimating peak generation timing in which a peak is generated in an inter-terminal voltage VH of the smoothing condenser on the basis of at least one of an operating condition of the three-phase alternating current motor; a switching condition of the switching circuits corresponding to each of the three phases; and a controlling device for controlling a drive condition of the first power converter so the inter-terminal voltage VH (or a VH peak) in the peak generation timing decreases, for a predetermined period from start timing set in a time domain before the estimated peak generation timing.

Abstract: The present invention prevent a shortage of the output when an intermittent boost is executed. A control apparatus for controlling a boost converter that can boost power supply voltage by boost control has: an intermittent controlling device for executing the intermittent boosting in such a manner that output voltage is maintained in a voltage variation allowable range including a target value on the basis of the detected output voltage of the boost converter; an average value calculating device for calculating an average value of the output voltage in an execution period of the intermittent boosting; and a target value correcting device for correcting the set target value to increase it when the calculated average value is less than the target value and is less than a required voltage value of a loading apparatus.

Abstract: A voltage conversion control apparatus is a voltage conversion control apparatus which controls a voltage converter having an upper switching element and a lower switching element, and has a calculating device which calculates duty ratio such that output current of an electricity storage apparatus reaches target value and the duty ratio is within predetermined allowable range; a limit relaxing device which relaxes at least one of upper limit value and lower limit value of the allowable range on the basis of magnitude relationship between predetermined threshold value and current deviation which is obtained by subtracting the output current from the target value; and a controlling device which controls the upper switching element and the lower switching element to perform a switching control on the basis of the duty ratio which is calculated by the calculating device.

Abstract: The present invention minimizes system loss during execution of intermittent boosting. A boost converter control apparatus has: a target value setting device for setting a target value of output voltage that minimizes a loss of a power supply system including a DC power supply, a boost converter, and a loading apparatus; an intermittent controlling device for executing an intermittent process of boost control in such a manner that the output voltage is maintained in a range including the set target value; an average value calculating device for calculating an average value of the output voltage in an execution period of the intermittent process; and a target value correcting device for correcting the set target value to reduce a deviation between the calculated average value and the set target value.