摘要:
According to one embodiment, an electronic device includes a positive electrode, a negative electrode, a first terminal, a second terminal, a first plurality of switching elements and anti-parallel diodes coupled between the positive electrode and the first terminal and the second terminal, a second plurality of switching elements and anti-parallel diodes coupled between the negative electrode and the first terminal and the second terminal and a PiN diode coupled between the positive electrode and the negative electrode with reverse polarity.
摘要:
A system and method for a vehicle control system is disclosed herein. The system includes an inverter circuit, a permanent magnet synchronous motor, and a crossover connected between the inverter circuit and the permanent magnet synchronous motor. The system may also include at least one current sensor installed between the inverter circuit and the permanent magnet synchronous motor. A contactor may also be connected between the inverter circuit and the permanent magnet synchronous motor and may pass or shut off electricity between the inverter circuit and the permanent magnet synchronous motor. The system may also include a control unit connected to the contactor and the current sensor. The control unit may detect a current abnormality using information from the current sensor and open the contactor if an abnormality is detected.
摘要:
A safety device includes a first computation unit, a second computation unit, an output control unit, and a first central processing device. The first computation unit is configured to perform a first computation on a detected value detected from a subject to be controlled, thus obtaining a first result value. The second computation unit is configured to perform a second computation on the detected value, thus obtaining a second result value which is to be determined if equal to the first result value. The output control unit is configured to output the first result value in a case that the second computation unit determines that the first result value is equal to the second result value, and not to output the first result value in a case that the second computation unit determines that the first result value is not equal to the second result value.
摘要:
An information processing apparatus includes an MMU that translates between a virtual address and a physical address on the basis of a translation table for translation between physical addresses that are addresses in physical memory and virtual addresses that are addresses in virtual memory. Stored in a RAM are page table information indicating a page table, as well as error detection information attached to the page table information for detecting the presence or absence of an error in translation between a virtual address and a physical address performed by the MMU. A CPU detects the presence or absence of an error in translation between a virtual address and a physical address performed by the MMU on the basis of the error detection information.
摘要:
According to one embodiment, four VVVF main circuit inverters for supplying electric power to drive a permanent-magnet synchronous motor are packaged into one unit. The four VVVF main circuit inverters are configured as a 4-in-1 inverter unit which shares a cooling mechanism for radiating heat generated due to power supply operation for the permanent-magnet synchronous motors to outside. A 2-in-1 semiconductor device package in which two semiconductor elements to convert electric power are packaged into one unit to be able to drive a permanent-magnet synchronous motor is contained in the 4-in-1 inverter unit. Thereby, individual control of inverters and reducing the size of the entire apparatus can be achieved for the electric-vehicle control apparatus.
摘要:
A method for electrolyzing a molten chloride which comprises electrolyzing a molten bath of a chloride of a metal more base than hydrogen, such as sodium, magnesium, calcium or aluminum, in an electrolytic cell containing an anode and a cathode to form chlorine at the surface of the anode and the metal at the surface of the cathode,wherein the anode comprises an electrically conductive substrate resistant to corrosion by the molten bath of the metal chloride and the electrolysis products thereof and having thereon a coating of a noble metal oxide, andwith the electrolysis being carried out in the presence of an oxide or oxychloride of a metal more base than the metal formed at the cathode where the concentration of the oxide or oxychloride of the metal present in the molten bath, expressed as the mole fraction of free oxygen ion, is at least about 1.times.10.sup.-4.
摘要:
An electric motor control apparatus including an inverter which drives a motor of an electric motor car, storage unit for storing energy for the motor, and a converter which is connected to the storage unit, the inverter comprising detection unit for detecting a power value of the motor, and transmission unit for transmitting the power value detected by the detection unit to the converter, and the converter comprising calculation unit for receiving the power value transmitted by the transmission unit, and calculating an absorption current on the basis of the received power value, and control unit for controlling the storage unit on the basis of the absorption current calculated by the calculation unit.
摘要:
A safety device includes a first computation unit, a second computation unit, an output control unit, and a first central processing device. The first computation unit is configured to perform a first computation on a detected value detected from a subject to be controlled, thus obtaining a first result value. The second computation unit is configured to perform a second computation on the detected value, thus obtaining a second result value which is to be determined if equal to the first result value. The output control unit is configured to output the first result value in a case that the second computation unit determines that the first result value is equal to the second result value, and not to output the first result value in a case that the second computation unit determines that the first result value is not equal to the second result value.
摘要:
A CPU changes the operating mode to a test mode in which the CPU does not terminate a program being executed even if an MMU outputs a CPU exception notification, outputs an address signal for causing the MMU to output a CPU exception notification to the MMU in the test mode, and detects whether or not a CPU exception notification is input after the address signal is output to the MMU. This allows inspection as to whether or not a fault that prevents detection of an illegal access has occurred in the MMU while executing another program.
摘要:
A CPU changes the operating mode to a test mode in which the CPU does not terminate a program being executed even if an MMU outputs a CPU exception notification, outputs an address signal for causing the MMU to output a CPU exception notification to the MMU in the test mode, and detects whether or not a CPU exception notification is input after the address signal is output to the MMU. This allows inspection as to whether or not a fault that prevents detection of an illegal access has occurred in the MMU while executing another program.