Title:
Gate power supply and the semiconductor breaker using this
Document Type and Number:
Japanese Patent JP6157625
Kind Code:
B2
Abstract:
A small and highly-efficient gate-power-supply device (1) that has high insulating property and that can stabilize voltage to be applied to gate drivers (8). A gate-power-supply device (1) provided with an inverter circuit (3), a transformer, and rectifier circuits (7) includes: secondary-side parallel capacitors (Cp) connected in parallel to secondary-side coils (5) of the transformer and for cancelling inductance components of the secondary-side coils (5) at the drive frequency f 0 of the inverter circuit (3); and a primary-side series capacitor (Cs) connected in series to a primary-side coil (4) of the transformer, and for cancelling the imaginary term (inductance component) of the combined impedance of the gate drivers (8), the rectifier circuits (7), the secondary-side parallel capacitors (Cp), the secondary-side coils (5), transformer cores (6) and the primary-side coil (4), which are a load viewed from the inverter circuit (3).
Inventors:
Takuya Yabumoto
Kazushi Tanaka
Hiroyasu Iwabata
Kazushi Tanaka
Hiroyasu Iwabata
Application Number:
JP2015529547A
Publication Date:
July 05, 2017
Filing Date:
July 25, 2014
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02J50/10; H02M1/08
Domestic Patent References:
| JP2010284027A | ||||
| JP2002272134A | ||||
| JP2006109686A | ||||
| JP2009177951A | ||||
| JP8017656A |
Attorney, Agent or Firm:
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa