Abstract:
An electric power unit for a vehicle mounted on a vehicle (2) includes a base battery (100), a boost converter (200) that converts the voltage supplied from the base battery (100) to a target voltage to supply electric power to an inverter (202), an electric power line (PL1) that connects the inverter (202) with the boost converter (200), and a first battery (150) and a second battery (160) whose respective positive electrodes are connected with a node (212) provided on the electric power line (PL1) to supply electric power to the inverter (202).
Abstract:
A power output device including a motor with a permanent magnet and a motor without a permanent magnet. A voltage step-up device (10) is connected to an electricity storage device (B). A first drive device (30) is connected to the step-up device (10). A first rotating electric machine (35) with a permanent magnet is connected to the first drive device (35). A second drive device (40) is connected to the electricity storage device (B). A second rotating electric machine (45) without a permanent magnet is connected to the second drive device (40). Further, a third drive device (20) is connected to the voltage step-up device (10) in parallel with the first drive device (30). A third electric rotating machine (25) with a permanent magnet is connected to the third drive device (20). The second rotating electric machine (45) is constructed from a reluctance motor or an induction motor. The first rotating electric machine (35) and the second rotating electric machine (45) can be connected to a wheel of a vehicle.
Abstract:
The present invention is directed to a control strategy for operating a plurality of prune power sources (101-1 to 101-3) during propulsion, idling and braking and is applicable to large systems such as trucks, ships, cranes and locomotives utilizing diesel engines, gas turbine engines, other types of internal combustion engines, fuel cells or combinations of these that require substantial power and low emissions utilizing multiple power plant combinations The present invention is directed at a general control strategy for a multi- engine systems (101-1, 101-2) where the power systems need not be of the same type or power rating and may even use different fuels The invention is based on a common DC bus (103) electrical architecture so that prime power sources need not be synchronized
Abstract:
When a control device obtains from a car navigation device a planned travel distance from a current position of a vehicle up to a previously set electricity charging waypoint (S20), the device lowers, based on the obtained planned travel distance, upper/lower limits for controlling SOC of an electricity storage device as the vehicle nears the electricity charging waypoint (S30). Then, the control device controls SOC of the electricity storage device to within the set upper/lower limits (S40).
Abstract:
A power converter for a switched reluctance motor or a permanent magnet brushless direct current (dc) motor may include first and second partial circuit for forming multiple conduction circuits in cooperation with first and second phase windings of the motor. The contoller also includes a switch operable to open and close a first conduction circuit, which includes the first phase winding, and to regulate energization of the first and second phase windings of the motor through opening and closing the first conduction circuit. Control of the switch provides four-quadrant operation of the motor through regulated energization of the first and second phase windings.
Abstract:
An electrical load apparatus (100) comprises a DC power source (B), voltage sensors (10, 20), system relays (SR1, SR2), capacitors (11, 13), DC/DC converter (12), an inverter (14), a current sensor (24), rotation sensor (25), controller (30), and an AC motor (M1). The controller (30) limits an increment of power consumption in the AC motor (M1) to a range which enables the continuation to drive the electrical load apparatus (100) when the increment of power consumption in the AC motor (M1) exceeds an allowable power to be supplied from the capacitor (13) to the inverter (14).
Abstract:
A motor controller is constituted of a power source circuit which outputs a desired DC voltage by rectifying AC power and improves the power factor of the AC power and a motor driving circuit which drives a motor. The controller is provided with a converter circuit composed of a rectifier circuit which converts the AC power into a direct current, a smoothing circuit, and a chopper circuit which performs switching and controls the DC voltage by utilizing the energy storing effect of an inductance, a motor driver composed of an inverter circuit connected to the output of the converter circuit and a motor, a converter control circuit which controls the switching operation of the chopper circuit, an inverter control circuit which drives the motor by controlling the switching operation of the inverter circuit, a speed detecting circuit which calculates the rotating speed of the motor by detecting the position of the rotor of the motor, a speed control circuit which controls the speed of the motor through the inverter control circuit, and a DC voltage control circuit which receives the output signal of the speed control circuit and controls the DC voltage through the converter control circuit in accordance with the output signal of the speed control circuit. The DC voltage control circuit outputs a signal which changes the DC voltage to the converter control circuit when the output of the speed control circuit reaches a prescribed value. The output of the speed control circuit is a conduction ratio signal or the speed difference signal between a calculated speed value and a commanded speed value.