摘要:
A power supply system for a motor vehicle includes a generator that includes a rotor having a field coil and a stator having an armature coil; a rectifier that rectifies AC power generated in the armature coil; an excitation control circuit that takes control of a voltage applied to the field coil; a capacitor that is connected to the DC side of the rectifier, and receives and transfers the rectified power; a battery connected to an electric load of the motor vehicle; a DC-DC converter that is connected between the capacitor and the battery and capable of converting unidirectionally or bidirectionally an input DC voltage into any DC voltage; and a selection switch which connects the capacitor or the battery to the excitation control circuit as a power supply source.
摘要:
A power supply system for a motor vehicle includes a generator that includes a rotor having a field coil and a stator having an armature coil; a rectifier that rectifies AC power generated in the armature coil; an excitation control circuit that takes control of a voltage applied to the field coil; a capacitor that is connected to the DC side of the rectifier, and receives and transfers the rectified power; a battery connected to an electric load of the motor vehicle; a DC-DC converter that is connected between the capacitor and the battery and capable of converting unidirectionally or bidirectionally an input DC voltage into any DC voltage; and a selection switch which connects the capacitor or the battery to the excitation control circuit as a power supply source.
摘要:
A power supply system for a motor vehicle is provided with: a generator that includes a rotor having a field coil and a stator having an armature coil; a rectifier that rectifies AC power generated in the armature coil; an excitation control circuit that takes control of a voltage applied to the field coil; a capacitor that is connected to the DC side of the rectifier, and receives and transfers the rectified power; a battery connected to an electric load of the motor vehicle; a DC-DC converter that is connected between the capacitor and the battery and capable of converting unidirectionally or bidirectionally an input DC voltage into any DC voltage; and a selection switch capable of selecting as a power supply source for the excitation control circuit either the capacitor or the battery.
摘要:
In order to receive a power generation command from the outside of a body, to transmit power generation control condition with respect to the power generation command to the outside, and to enable a vehicle to drive properly depending on the condition; a minimum value selector by which on-duty of a switching element by the power generation command inputted from the outside of the body of a control device is compared to on-duty of the switching element calculated inside the body of the control device and smaller on-duty of both on-duties is selected to perform ON/OFF control of the switching element is included, and the selected on-duty is transmitted to the outside.
摘要:
A control device for a vehicle AC generator which restricts an upper limit of a field current to the maximum field current at a set voltage even when a power generation voltage becomes large, is obtained. In the control device for the vehicle AC generator, in which a DC voltage obtained by rectifying an AC output voltage of an armature coil in the AC generator with a rectifier is applied to a field coil to obtain a field current and the field current is controlled by ON/OFF of a switching element connected in series to the field coil, an upper limit restriction unit in which an upper limit of on-duty of the switching element is set to a set voltage/the DC voltage, is included.
摘要:
A control apparatus and a control method of an on-vehicle dynamo-electric machine 1 are provided for efficiently controlling functions as a starter-motor and as a charging generator. In case that the dynamo-electric machine 1 acts as a charging generator, when a rotation speed of the dynamo-electric machine 1 is not higher than a predetermined value, a power is generated by applying a compensation current from and inverter to an armature coil 3 for phase control. On the other hand, when a rotation speed of the dynamo-electric machine 1 is not lower than a predetermined value, operation of the inverter is stopped. Thus, controlling a current applied to a field coil 4 by a field coil current control means 5 generates a predetermined target voltage.
摘要:
A synchronous machine control device is provided with a magnet state outputter that estimates a magnetic flux of a permanent magnet forming the magnetic field of a synchronous machine. In a magnet state correction value calculation mode, the magnet state outputter calculates a magnet state correction value. In a magnet state estimation mode, the magnet state outputter obtains, from a magnet state estimation device, a magnetic flux estimation value of the permanent magnet under a given condition of a magnetic flux command and a δ-axis current command and controls a magnet state corrector to correct the magnetic flux estimation value of the permanent magnet obtained by the magnet state estimation device, by use of the magnet state correction value.
摘要:
A control device for a vehicle AC generator, in which a part can be shared even when electrical configuration positions of field coils of rotors of generators are different, is obtained. Switching elements connected in series to the field coil in order to control a field current; and a control signal processing unit, in which information as to whether the field coil is connected to the high potential side or connected to the low potential side is inputted, one of the high potential side terminal and the low potential side terminal is selected on the basis of the inputted information, a control signal is outputted, and ON/OFF control of the switching element is performed to control the field current of the field coil, are provided.
摘要:
A current detector of an inductive load includes: an inductive load 100; a switching element 101 connected in series with the inductive load and controls an electric current to be carried through this inductive load by ON/OFF operation; a current circulating diode 102 connected in parallel with the inductive load and circulates an electric current of the inductive load when the switching element is OFF; current detecting device 103 making a sampling in a cycle of a predetermined sampling period to detect an electric current to be carried through the switching element 101; and current correction device 104 making a correction with respect to an electric current value having been detected at the current detector, and in which the current correction device 104 changes the correction rate based on DUTY of a pulse with which the switching element is brought in ON/OFF operation.
摘要:
There can be performed the best power-generation control without enlarging the apparatus, deteriorating the reliability, and raising the cost. The power-generation control apparatus is provided with a power-generation amount suppression determination unit that determines whether or not to change a power-generation amount suppression level for suppressing the power-generation amount of the in-vehicle electric rotating machine, based on a present generation-voltage command value generated by a generated-voltage command unit and a generated-voltage past command value based on a past generated-voltage command value stored in a generated-voltage command storage unit, and that determines whether or not the power-generation amount suppression control is required, based on at least one of a past value and a present value of the generated-voltage command; therefore, there can be performed the best power-generation control without enlarging the apparatus, deteriorating the reliability, and raising the cost.