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

Patent metadata

Field	Value
Publication number	US-11539361-B2
Application number	US-202117172571-A
Country	US
Kind code	B2
Filing date	Feb 10, 2021
Priority date	Mar 11, 2020
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Hitachi Power Semiconductor Device Ltd

Inventors

• Masuda Toru
• Hayakawa Seiichi
• Takayanagi Yuji
• Shimada Takae
• Wada Takashi

Classifications

• H02M1/38

  Means for preventing simultaneous conduction of switches · CPC title

• H02M1/088

  for the simultaneous control of series or parallel connected semiconductor devices · CPC title

• H03K17/162 Primary

  without feedback from the output circuit to the control circuit · CPC title

• B60L9/005

  Interference suppression · CPC title

• H02M1/0048

  Circuits or arrangements for reducing losses (using snubbers H02M1/34) · CPC title