US20150318778 Inrush current control during starting of resonant converters

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United States of America

Application Number 14650632

Application Date 22.01.2014

Publication Number 20150318778

Publication Date 05.11.2015

Grant Number 11031860

Grant Date 08.06.2021

Publication Kind B2

IPC

CPC

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Applicants Murata Manufacturing Co., Ltd.

Inventors Bing Gong
Jahangir Afsharian

Agents Keating & Bennett, LLP

Title

(EN) Inrush current control during starting of resonant converters

Abstract

(EN)

A converter with soft start includes a transformer; first and second switches connected to the transformer to supply power to the transformer; a controller connected to the first and second transistors and arranged to, during startup of the converter, switch the first switch with a variable duty cycle and switch the second switch with either a fixed duty cycle or a variable duty cycle with pulses larger than pulses of the variable duty cycle of the first switch; and a bleed device arranged to set initial conditions of the converter before startup of the converter by discharging a capacitor in the converter before startup.

H	ELECTRICITY
02	GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1	Details of apparatus for conversion
36	Means for starting or stopping converters

H	ELECTRICITY
02	GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3	Conversion of dc power input into dc power output
22	with intermediate conversion into ac
24	by static converters
28	using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325	using devices of a triode or a transistor type requiring continuous application of a control signal
335	using semiconductor devices only

H	ELECTRICITY
02	GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3	Conversion of dc power input into dc power output
22	with intermediate conversion into ac
24	by static converters
28	using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325	using devices of a triode or a transistor type requiring continuous application of a control signal
335	using semiconductor devices only
337	in push-pull configuration

H	ELECTRICITY
02	GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1	Details of apparatus for conversion
36	Means for starting or stopping converters

H	ELECTRICITY
02	GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3	Conversion of dc power input into dc power output
22	with intermediate conversion into ac
24	by static converters
28	using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325	using devices of a triode or a transistor type requiring continuous application of a control signal
335	using semiconductor devices only

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1. US20150318778 - Inrush current control during starting of resonant converters

H	ELECTRICITY
02	GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
M	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3	Conversion of dc power input into dc power output
22	with intermediate conversion into ac
24	by static converters
28	using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325	using devices of a triode or a transistor type requiring continuous application of a control signal
335	using semiconductor devices only
337	in push-pull configuration
3376	with automatic control of output voltage or current

Y	SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02	TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
B	CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
70	Technologies for an efficient end-user side electric power management and consumption
10	Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Y	SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02	TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
P	CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
80	Climate change mitigation technologies for sector-wide applications
10	Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier