Abstract: A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.

Abstract: A motor drive device includes: a first inverter including a plurality of first switching elements and connected to a plurality of coils; a second inverter including a plurality of second switching elements and connected to the plurality of coils; a plurality of transfer switching elements connected to the second ends; a capacitor disposed at one side of a casing of a motor; first and second cooling channels disposed at both sides of the capacitor; a plurality of first power modules including some of the plurality of first switching elements and some of the transfer switching elements; and a plurality of second power modules including some of the plurality of second switching elements.

Abstract: A motor driving device drives a motor having a plurality of windings corresponding to a plurality of phases. The motor driving device includes: a first inverter configured to include a plurality of first switching elements and connected to first stages of the plurality of windings; a second inverter configured to include a plurality of second switching elements and connected to second stages of the plurality of windings; and a controller configured to fix switching states of the second switching elements and switch the first switching elements to compose target voltage vectors if the motor is driven in an open end winding type by operating the first inverter and the second inverter in a space vector pulse width modulation mode.

Abstract: An apparatus and a method for controlling a switching device for a power converter are provided. The apparatus includes a gate driver configured to apply a first driving voltage and a second driving voltage to the gate terminal based on one turn-on of the switching device, wherein the first driving voltage and the second driving voltage have different values; to turn on the switching device; and a controller configured to control the gate driver such that the gate driver applies the second driving voltage to the gate terminal after the first driving voltage is applied to the gate terminal.

Abstract: A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.

Abstract: A method includes: detecting, by a motor controller, an interlock failure of a connector for connecting between a gate driver and the motor controller, the connector being connected to an inverter for driving a motor in an eco-friendly vehicle; and determining, by the motor controller, that the interlock failure of the connector has occurred when an output value of a signal processor provided in the motor controller so that a sensing signal is inputted from the gate driver through the connector is detected as a value beyond a predetermined normal sensing range.

Abstract: An apparatus for protecting a device of a motor drive inverter includes a plurality of power modules configured to control the multi-phase alternating current supplied to the motor. Each of the plurality of power modules includes a top phase switching device connected to a positive terminal of the battery, a bottom phase switching device connected in series to the top phase switching device and connected to a negative terminal of the battery, and a current interruption unit connected in series to the top phase switching device and the bottom phase switching device, and configured to be disconnected when a current greater than or equal to a desired interrupting current flows thereto, so as to prevent a switching device of a power module from being burned out due to an overcurrent by installing a fuse wire to the power module.

Abstract: An apparatus and a method for controlling a switching device for a power converter are provided. The apparatus includes a gate driver configured to apply a first driving voltage and a second driving voltage to the gate terminal based on one turn-on of the switching device, wherein the first driving voltage and the second driving voltage have different values; to turn on the switching device; and a controller configured to control the gate driver such that the gate driver applies the second driving voltage to the gate terminal after the first driving voltage is applied to the gate terminal.

Abstract: An Insulated Gate Bipolar Transistor (IGBT) temperature sensor correction apparatus includes an Insulated Gate Bipolar Transistor (IGBT); a temperature sensor having a sensing diode; and a process variation sensor having an internal resistor.

Abstract: A gate driving apparatus for a power semiconductor device may include: a first off-resistor and a second off-resistor each having a first end connected to a gate of the power semiconductor device; a first off-switch configured to determine a connection state between a second end of the first off-resistor and a ground based on a gate driving signal for determining an on/off state of the power semiconductor device; a second off-switch configured to determine a connection state between a second end of the second off-resistor and the ground; an electric current detector configured to detect an electric current flowing from a collector (drain) of the power semiconductor device to an emitter (source) of the power semiconductor device; and a controller configured to determine an open/closed state of the second off-switch based on the gate driving signal and a magnitude of the electric current detected by the electric current detector.

Abstract: A gate driving apparatus for a power semiconductor device may include: a first off-resistor and a second off-resistor each having a first end connected to a gate of the power semiconductor device; a first off-switch configured to determine a connection state between a second end of the first off-resistor and a ground based on a gate driving signal for determining an on/off state of the power semiconductor device; a second off-switch configured to determine a connection state between a second end of the second off-resistor and the ground; an electric current detector configured to detect an electric current flowing from a collector (drain) of the power semiconductor device to an emitter (source) of the power semiconductor device; and a controller configured to determine an open/closed state of the second off-switch based on the gate driving signal and a magnitude of the electric current detected by the electric current detector.

Abstract: An IGBT temperature sense circuit is provided. The IGBT temperature sense circuit automatically calibrates a temperature sense of a diode to minimize an error based on element characteristics of a temperature sense diode, precisely senses the temperature and removes a limit of a maximum current (to increase the maximum current) of an output of an IGBT. A temperature sense circuit includes an automatic calibrator that is configured to supply current of a current source to a current to a diode and a diode temperature sensor that is configured to measure a voltage of one side terminal of the diode based on the current of the diode based on a change of a temperature and adjustment of an operation of a protection object device.

Abstract: An Insulated Gate Bipolar Transistor (IGBT) temperature sensor correction apparatus includes an Insulated Gate Bipolar Transistor (IGBT); a temperature sensor having a sensing diode; and a process variation sensor having an internal resistor.

Abstract: A temperature sensing system for a switching device is provided The temperature sensing system includes a sensing device that is configured to sense a temperature of the switching device and a signal converter that is configured to output a digital signal having a frequency based on a voltage across the sensing device by a frequency variable method which receives the voltage across the sensing device which is a temperature sensing value when a current flows in the sensing device to convert a level of an analog signal into a frequency of the digital signal. An isolator is configured to be connected to an output terminal of the signal converter to isolate and transmit the digital signal output from the signal converter. The system also includes a controller configured to recognize the temperature from the frequency of the digital signal transmitted through the isolator.

Abstract: An IGBT temperature sense circuit is provided. The IGBT temperature sense circuit automatically calibrates a temperature sense of a diode to minimize an error based on element characteristics of a temperature sense diode, precisely senses the temperature and removes a limit of a maximum current (to increase the maximum current) of an output of an IGBT. A temperature sense circuit includes an automatic calibrator that is configured to supply current of a current source to a current to a diode and a diode temperature sensor that is configured to measure a voltage of one side terminal of the diode based on the current of the diode based on a change of a temperature and adjustment of an operation of a protection object device.

Abstract: A system and method for controlling a power module are provided. The system includes a switch element that adjusts output of a power module, a driving signal generation unit that generates a switch ON signal and a switch OFF signal for the switch element, and a latch that is connected between the driving signal generation unit and the switch element and is configured to delay the switch ON signal generated by the driving signal generation unit by a preset delay time and transfer a delayed signal to the switch element. Additionally, a compensation unit is connected between the latch and the power module and is configured to adjust the output of the power module during the delay time by which the latch delays the switch ON signal.

Abstract: A circuit for detecting failure of an insulated-gate bipolar transistor (IGBT) power module, is provided to combine failure detecting signals of an IGBT power module using a photo coupler to transmit the isolated signals. The failure detecting circuit includes a circuit that combines six phase isolated failure detecting signals transmitted from a gate drive IC via a photo coupler to be one signal. A plurality of logic gate ICs are omitted, to reduce a material cost, a size of a circuit board, and power consumption.

Abstract: A method includes: detecting, by a motor controller, an interlock failure of a connector for connecting between a gate driver and the motor controller, the connector being connected to an inverter for driving a motor in an eco-friendly vehicle; and determining, by the motor controller, that the interlock failure of the connector has occurred when an output value of a signal processor provided in the motor controller so that a sensing signal is inputted from the gate driver through the connector is detected as a value beyond a predetermined normal sensing range.

Abstract: An interface circuit for detecting a fault in a resolver is provided. More specifically, the interface circuit includes the resolver connected to an intermediate point of a stator coil of a first output terminal for a sine wave signal and an intermediate point of the stator coil of a second output terminal for a cosine wave signal to output the sine and cosine wave signals as a common mode signal. Also includes is resolver fault detection interface unit that adjusts a gain and an offset of the sine wave signal and the cosine wave signal in order to adjust the sine wave signal and the cosine wave signal received as a common mode signal to a frequency that can be suitably applied to an analog/digital terminal of a microcomputer, and to allow high-frequency components of the sine wave signal and the cosine wave signal to pass therethrough.

Abstract: A temperature sensing system for a switching device is provided The temperature sensing system includes a sensing device that is configured to sense a temperature of the switching device and a signal converter that is configured to output a digital signal having a frequency based on a voltage across the sensing device by a frequency variable method which receives the voltage across the sensing device which is a temperature sensing value when a current flows in the sensing device to convert a level of an analog signal into a frequency of the digital signal. An isolator is configured to be connected to an output terminal of the signal converter to isolate and transmit the digital signal output from the signal converter. The system also includes a controller configured to recognize the temperature from the frequency of the digital signal transmitted through the isolator.