Semiconductor device signal transmission circuit for drive-control, method of controlling semiconductor device signal transmission circuit for drive-control, semiconductor device, power conversion device, and electric system for railway vehicle
To provide a semiconductor device signal transmission circuit for drive-control, a method of controlling a semiconductor device signal transmission circuit for drive-control, a semiconductor device, a power conversion device, and an electric system for a railway vehicle capable of preventing malfunction due to noise while speeding up or reducing loss of a switching operation. The semiconductor device signal transmission circuit for drive-control that is connected between a semiconductor device constituting an arm in a power conversion device and a drive circuit configured to drive the semiconductor device, including: an inductor; and an impedance circuit including a switch and connected in parallel with the inductor.
1. A semiconductor device signal transmission circuit for drive-control that is connected between a semiconductor device constituting an arm in a power conversion device and a drive circuit configured to drive the semiconductor device, the semiconductor device signal transmission circuit for drive-control comprising:
an inductor; and
an impedance circuit including a switch and connected in parallel with the inductor, wherein
when a drive arm of the arm is turned on, in a counter arm of the arm, the switch is in an ON state, and the impedance circuit short-circuits the inductor,
the impedance circuit includes a series circuit of the switch and a diode, and
the impedance circuit short-circuits the inductor with the diode.
2. The semiconductor device signal transmission circuit for drive-control according to claim 1 , wherein
when the drive arm of the arm is turned on, the switch is in an OFF state in the drive arm.
3. A semiconductor device including an arm in a power conversion device, the semiconductor device comprising:
a signal transmission circuit for drive-control connected between the arm and a drive circuit configured to drive the arm, wherein
the signal transmission circuit for drive-control is the semiconductor device signal transmission circuit for drive-control according to claim 1 .
4. A power conversion device including a main circuit having a pair of upper and lower arms and a drive circuit configured to drive the arms, the power conversion device comprising:
a signal transmission circuit for drive-control connected between the arms and a drive circuit configured to drive the arms, wherein
the signal transmission circuit for drive-control is the semiconductor device signal transmission circuit for drive-control according to claim 1 .
5. An electric system for a railway vehicle that drives an electric motor configured to drive a railway vehicle, the electric system for a railway vehicle comprising:
a pantograph;
a circuit breaker connected to the pantograph;
a reactor connected to the circuit breaker;
a power conversion device connected to the reactor; and
an electric motor connected to the power conversion device, wherein
the power conversion device is the power conversion device according to claim 4 .
6. A semiconductor device signal transmission circuit for drive-control that is connected between a semiconductor device constituting an arm in a power conversion device and a drive circuit configured to drive the semiconductor device, the semiconductor device signal transmission circuit for drive-control comprising:
an inductor;
an impedance circuit including a switch and connected in parallel with the inductor;
a first inductor and a second inductor connected in series with each other as the inductor;
a first switch connected in parallel to the first inductor; and
a second switch connected in parallel to the second inductor.
7. The semiconductor device signal transmission circuit for drive-control according to claim 6 , wherein
the impedance circuit includes a series circuit of the switch and a resistor, and
the impedance circuit short-circuits the inductor with the resistor.
8. The semiconductor device signal transmission circuit for drive-control according to claim 6 , wherein
the impedance circuit short-circuits the inductor with the switch.