JPS54121925A - Inverter - Google Patents

Inverter

Info

Publication number
JPS54121925A
JPS54121925A JP2945778A JP2945778A JPS54121925A JP S54121925 A JPS54121925 A JP S54121925A JP 2945778 A JP2945778 A JP 2945778A JP 2945778 A JP2945778 A JP 2945778A JP S54121925 A JPS54121925 A JP S54121925A
Authority
JP
Japan
Prior art keywords
circuit
capacitor circuit
capacitor
commutation
thyristor bridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2945778A
Other languages
Japanese (ja)
Other versions
JPS5953790B2 (en
Inventor
Yorio Hosokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53029457A priority Critical patent/JPS5953790B2/en
Publication of JPS54121925A publication Critical patent/JPS54121925A/en
Publication of JPS5953790B2 publication Critical patent/JPS5953790B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Inverter Devices (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To improve the torque characteristics of a load motor by improving current application ratio through th on-off operation of a capacitor circuit and the change of commutation off time.
CONSTITUTION: A capacitor circuit connected through a switch is provided between a thyristor bridge circuit, inverse bias circuit, chopper switching element, and the output terminal of the thyristor bridge circuit. The on-off operation of a capacitor circuit consisting of the capacitors 14a to 14c and the change of the commutation off time of the chopper switching elements 8 and 9 are automatically performed in accordance with the current command for controlling the thyristor bridge circuit. This prevents the deterioration of torque characteristics due to the degradation of current application ratio in the high speed region which is the defect of a lumped commutation type inverter. Since the capacitor circuit is automatically separated in the low speed region, the capacitor loss generated by the resonance current which is applied to both the motor winding and the capacitor circuit can be eliminated.
COPYRIGHT: (C)1979,JPO&Japio
JP53029457A 1978-03-15 1978-03-15 Inverter device Expired JPS5953790B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53029457A JPS5953790B2 (en) 1978-03-15 1978-03-15 Inverter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53029457A JPS5953790B2 (en) 1978-03-15 1978-03-15 Inverter device

Publications (2)

Publication Number Publication Date
JPS54121925A true JPS54121925A (en) 1979-09-21
JPS5953790B2 JPS5953790B2 (en) 1984-12-26

Family

ID=12276626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53029457A Expired JPS5953790B2 (en) 1978-03-15 1978-03-15 Inverter device

Country Status (1)

Country Link
JP (1) JPS5953790B2 (en)

Also Published As

Publication number Publication date
JPS5953790B2 (en) 1984-12-26

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