摘要:
The present invention relates to a circuit and method for detecting a short and a disconnection of a resolver for a Hybrid Electric Vehicle (HEV), which can accurately analyze and detect the fault code of the resolver which detects the speed of a drive motor for an HEV and the angle of a rotator for an HEV.For this, the circuit of the present invention is configured such that resistors for detection of a short/disconnection are connected between output signal terminals of a resolver which are connected to input terminals of an RDC connected to a CPU, and the CPU measures certain voltages, obtained according to voltage division by the resistors for detection of a short/disconnection and pull-up resistors connected between a power source and the output signal terminals, with reference to differential signals which are output signals provided to the RDC through the output signal terminals.
摘要:
A high-ductility, high-strength and high Mn steel strip used for steel strips of automobiles requiring superior formability and high strength, a plated steel strip produced by using the same, and a manufacturing method thereof are disclosed. The high Mn steel strip comprises, by weight %, 0.2˜1.5% of C, 10˜25% of Mn, 0.01˜3.0% of Al, 0.005˜2.0% of Si, 0.03% or less of P, 0.03% or less of S, 0.040% or less of N, and the balance of Fe and other unavoidable impurities. The high-ductility, high-strength and high Mn steel strip, and the plated steel strip produced by using the same have superior surface properties and plating characteristics.
摘要:
An arm-short diagnostic method for a bi-directional DC/DC converter that includes a buck switching device, a buck diode, a boost switching device, and a boost diode, is presented. The method includes detecting an output current of the bi-directional DC/DC converter, and determining whether the output current is detected in a positive direction. The method also includes maintaining supply of a turn-off gating signal to the boost switching device, and supplying a turn-on gating signal to the buck switching device, if the detected output current is in a positive direction. Finally, the method includes determining whether the output current of the bi-directional DC/DC converter increases in a positive direction, and determining that at least one of the boost switching device and the buck diode is in a short circuit state, if it is determined that the output current of the bi-directional DC/DC converter does not increase in the positive direction.
摘要:
The present invention relates to a system and method for controlling power distribution of a fuel cell hybrid electric vehicle. The system includes a fuel cell, a battery, a DC/DC converter connected to the battery for the input and output of power, an inverter connected to the DC/DC converter and fuel cell, a motor connected to the inverter, and a controller for estimating the required vehicle power. Further the present invention controls power transmission between the fuel cell, the battery, the DC/DC converter, and the inverter. The controller selectively performs control into one of a fuel cell mode, a battery discharge mode, a battery charge mode, and a regeneration mode.
摘要:
The present invention provides a method for measuring the temperature of a motor for a hybrid electric vehicle. In preferred embodiments, the method of the present invention can preferably ensure the stability and reliability of motor control by extending the linearity of a temperature sensor attached to the motor within a required measurement range. The present invention preferably provides a method for measuring the temperature of a motor for a hybrid electric vehicle, in which a required measurement range of motor temperature is divided into high and low temperature ranges and a hardware gain circuit is divided into first and second gain blocks such that the first gain block measures the temperature of the high temperature range and the second gain block measures the temperature of the low temperature range.
摘要:
The present invention provides a method for controlling a permanent magnet synchronous motor used in electric vehicles such as hybrid vehicles, fuel cell vehicles, and the like. The method for controlling the permanent magnet synchronous motor preferably includes detecting an absolute angular position of a permanent magnet synchronous motor; calculating a rotational speed of the permanent magnet synchronous motor based on the detected absolute angular position; detecting a voltage of a battery as a power source; calculating a compensated speed, for which a battery voltage variation is compensated, from the rotational speed of the permanent magnet synchronous motor based on a torque command, the rotational speed of the permanent magnet synchronous motor, and the battery voltage; generating a d-axis current command and a q-axis current command corresponding to the torque command and the compensated speed using a predetermined current command map; converting three-phase currents flowing into the permanent magnet synchronous motor into a d-axis feedback current and a q-axis feedback current based on the detected absolute angular position; calculating a d-axis voltage command and a q-axis voltage command based on the d-axis current command, the q-axis current command, the d-axis feedback current, and the q-axis feedback current; converting the d-axis voltage command and the q-axis voltage command into three-phase voltage commands based on the detected absolute angular position; and controlling the operation of the permanent magnet synchronous motor based on the three-phase voltage commands.
摘要:
The present invention provides a method for measuring the temperature of a motor for a hybrid electric vehicle. In preferred embodiments, the method of the present invention can preferably ensure the stability and reliability of motor control by extending the linearity of a temperature sensor attached to the motor within a required measurement range.The present invention preferably provides a method for measuring the temperature of a motor for a hybrid electric vehicle, in which a required measurement range of motor temperature is divided into high and low temperature ranges and a hardware gain circuit is divided into first and second gain blocks such that the first gain block measures the temperature of the high temperature range and the second gain block measures the temperature of the low temperature range.
摘要:
A method for controlling a permanent magnet synchronous motor includes detecting an absolute angular position and using the angular position to calculate a rotational speed of the motor; detecting a voltage of a battery as a power source; calculating a compensated speed from a rotational speed of the permanent magnet synchronous motor based on a torque command, the rotational speed of the permanent magnet synchronous motor, and the battery voltage; generating a d-axis current command and a q-axis current command corresponding to the torque command and the compensated speed; calculating a d-axis voltage command and a q-axis voltage command based on the d-axis current command and the q-axis current command; converting the d-axis voltage command and the q-axis voltage command into three-phase voltage commands based on the detected absolute angular position; and controlling the operation of the permanent magnet synchronous motor based on the three-phase voltage commands.
摘要:
The present invention provides an emergency control apparatus, and method which maintains the power flow between a battery and an inverter and the operation state of an electric vehicle in the event of failure of a bidirectional DC-DC converter connected between the battery as a power source and the inverter for operating a drive motor.