Abstract:
PROBLEM TO BE SOLVED: To provide power conversion equipment for miniaturizing a substrate and suppressing an influence on arrangement and actuation of a switching element.SOLUTION: The power conversion equipment includes a capacitor, a plurality of switching elements, a plurality of normal-mode drive circuits, and a power supply for normal-mode drive. Also, the power conversion equipment includes at least one or more discharge-mode drive circuits M2b, M5b for driving the switching elements in discharge of charge stored in the capacitor, a power supply 50 for discharge-mode drive for outputting a power required for actuation of the discharge-mode drive circuits M2b, M5b, and a substrate 100 for disposing a plurality of connection units J2, J5 for connection to the switching elements. At least one or more discharge-mode drive circuits M2b, M5b are disposed in a specified region including the connection units J2, J5 selected from the plurality of connection units, and the power supply 50 for discharge-mode drive is disposed near the specified region. A wiring distance required for connection between the discharge-mode drive circuits M2b, M5b and the power supply 50 for discharge-mode drive can be reduced for miniaturization.
Abstract:
PROBLEM TO BE SOLVED: To provide power conversion equipment for exerting reliable drive control of a switching element under both of normal and discharge conditions by preventing a signal for drive from being routed from one drive circuit to the other drive circuit.SOLUTION: The power conversion equipment includes a capacitor Ca, a switching element Qa, a normal-mode drive circuit 1, and a power supply 4 for normal-mode drive. The power conversion equipment also includes a discharge-mode drive circuit 2 for driving the switching element Qa in discharge of charge stored in the capacitor Ca, a power supply 5 for discharge-mode drive for actuating the discharge-mode drive circuit 2, and a routing prevention means 3 that is interposed between the power supply 4 for normal-mode drive and the switching element Qa and between the power supply 5 for discharge-mode drive and the switching element Qa, and prevents the signal for drive from one drive circuit toward the other drive circuit in the normal-mode drive circuit 1 and the discharge-mode drive circuit 2.
Abstract:
PROBLEM TO BE SOLVED: To provide a series regulator which reliably disperses breakdown voltages of a plurality of series-connected transistors.SOLUTION: The series regulator 5 in which a plurality of output control transistors 5a, 5b are series-connected includes: a plurality of voltage dividing elements 5e, 5g for setting divided voltages for dispersing breakdown voltages of the plurality of output control transistors 5a, 5b; and voltage dividing control transistors 5j, 5k provided to the plurality of control transistor 5a, 5b and for controlling gate voltages of the output control transistors 5a, 5b.
Abstract:
PROBLEM TO BE SOLVED: To restrain a structure from being deformed, damaged, or the like even when the settlement of a foundation for supporting a building differs in every place. SOLUTION: The ground on which the building 10 is constructed is provided with the foundation 11 consisting of a continuous footing of reinforced concrete construction, and a main frame K1 and a skip frame K2 are installed on the foundation 11. The skip frame K2 constructs a living room 22 and a storage room 24 above it, and a heat pump type water heater 41 comprising a heat pump unit 41a and a water storage tank unit 41b is installed in the storage room 24. Moisture-proof concrete 61 horizontally provided in proximity to the foundation 11 (11a-11e) corresponding to the respective frames K1, K2 is discontinuous with respect to the foundation 11 (11a-11e) corresponding to the respective frames K1, K2. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a power supply device which can properly protect a load device according to a use status, and a vehicle equipped with the power supply device. SOLUTION: The power supply device mounted on a hybrid automobile 1 comprises a battery B which outputs a voltage VB, a boosting unit 20 which is arranged between the battery B and a vehicle load, and outputs a voltage VH to a load circuit by boosting the voltage VB, and a control device 30 which controls the boosting unit 20. The control device 30 changes the voltage VH according to air pressure at the present position of the hybrid automobile 1. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a motor control device that exactly controls a motor even if a target rotation state is abruptly changed. SOLUTION: A power control part 24 refers to a control table stored in a table memory 26, and acquires the optimum gain that is made to correspond to a torque target value and a rotation speed target value, and a corresponding current. Then, gain information G1 indicating the optimum gain is outputted to an amplifier 16. The amplifier 16 amplifies a current detection value outputted by a current sensor 14 at the optimum gain, and outputs it to the power control part 24. The power control part 24 obtains a value of a current flowing to a conductor 12-1 as a current measurement value on the basis of a current detection value outputted by the amplifier 16 and the gain information G1, and controls a power feeding circuit 10 on the basis of a current difference obtained by subtracting the corresponding current value form the current measurement value. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an abnormal condition detecting device for a cooling device, capable of detecting blocking occurring in a flow passage of a cooling medium with a simple structure. SOLUTION: In an instrument box 12, cooling air flows through a clearance between adjacent fins arranged in parallel along a flow passage of the cooling air at a heat sink on a housing side surface. In the flow passage of the cooling air, an image pickup device 40 and a light source 60 are respectively arranged on an upstream side and a downstream side of the instrument box 12. The image pickup device 40 shoots an image of the heat sink when a light signal is irradiated by a plurality of photoelectric transducers, and converted to a signal charge proportional to the light-receptive strength of each element to be accumulated. The signal charge accumulated about each photoelectric transducer is scanned in a direction vertical to the cooling medium flow passage and converted to a brightness signal. Receiving the brightness signal, a blocking detecting circuit 50 frequency-analyzes the brightness signal. The blocking detecting circuit 50 detects that a different frequency ingredient is extracted when blocking does not exist, thereby detecting blocking the cooling medium flow passage. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cooling device for an electric unit loaded on a vehicle which solves a problem caused by dew condensation, while maintaining its cooling performance. SOLUTION: An electric control unit (ECU) of this device is to perform a program including a step (S100) which detects an output from a DEW sensor, a step (S200) which allows a fan to operate when dew condensation is detected at an electric unit like a DC/DC converter (Yes at S110), either in case temperature is high at a DC/DC converter base plate, at a point near a field effect transistor (FET) of the DC/DC converter, or at a battery (Yes at either S120 or S130 or S140) and a step (S300) which stops a fan from operating when temperature is neither high at the DC/DC converter substrate, at the point near the FET of the DC/DC converter nor at the battery (NO at every step of S120, S130 and S140). COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To decide whether a vent through which cooled air passes has been blocked or not with high precision. SOLUTION: A hybrid ECU executes a program including a step (S100) for deciding whether laser light emitted from an LED has been received by a light receiving section or not and a step (S104) for deciding that the vent through which cooled air passes is blocked when the laser light is not received by the light receiving section (NO in the S100). The light receiving section is provided on an opposite side of the LED across the vent so that it directly receives the laser light emitted from the LED. COPYRIGHT: (C)2006,JPO&NCIPI