Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor
The initial resonant current in the extra-LC auxiliary resonant snubber inverter (ELCARSI) is the key parameter to realize soft switching and improve output quality. However, the initial resonant current is related to the filter inductor current. Thus, an extra filter inductor or capacitor current s...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8864058/ |
| _version_ | 1818737326310817792 |
|---|---|
| author | Hailin Zhang Jun Yao Baoquan Kou |
| author_facet | Hailin Zhang Jun Yao Baoquan Kou |
| author_sort | Hailin Zhang |
| collection | DOAJ |
| description | The initial resonant current in the extra-LC auxiliary resonant snubber inverter (ELCARSI) is the key parameter to realize soft switching and improve output quality. However, the initial resonant current is related to the filter inductor current. Thus, an extra filter inductor or capacitor current sensor is required, which increases the cost and hardware complexity. Besides, the traditional control strategy using load current to calculate the initial resonant current doesn't require the extra sensor. However, the current stress and output distortion is increased. Thus, an initial resonant current control strategy without filter inductor current sensor is proposed in this paper. The operating principle of ELCARSI is introduced. The output quality and soft switching influenced by the initial resonant current are analyzed. Besides, the proposed sensorless control with estimation of filter inductor current is introduced. A prototype was developed to verify the effectiveness of the control method. The output distortion is close to that of the control with extra sensor. |
| first_indexed | 2024-12-18T00:51:16Z |
| format | Article |
| id | doaj.art-ba86e086f0c04e8d888862a209c3f467 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-18T00:51:16Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-ba86e086f0c04e8d888862a209c3f4672022-12-21T21:26:40ZengIEEEIEEE Access2169-35362019-01-01714923714924410.1109/ACCESS.2019.29468458864058Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current SensorHailin Zhang0https://orcid.org/0000-0002-6310-7994Jun Yao1https://orcid.org/0000-0003-1129-756XBaoquan Kou2State Key Laboratory of Power Transmission Equipment and System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing, ChinaState Key Laboratory of Power Transmission Equipment and System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing, ChinaDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin, ChinaThe initial resonant current in the extra-LC auxiliary resonant snubber inverter (ELCARSI) is the key parameter to realize soft switching and improve output quality. However, the initial resonant current is related to the filter inductor current. Thus, an extra filter inductor or capacitor current sensor is required, which increases the cost and hardware complexity. Besides, the traditional control strategy using load current to calculate the initial resonant current doesn't require the extra sensor. However, the current stress and output distortion is increased. Thus, an initial resonant current control strategy without filter inductor current sensor is proposed in this paper. The operating principle of ELCARSI is introduced. The output quality and soft switching influenced by the initial resonant current are analyzed. Besides, the proposed sensorless control with estimation of filter inductor current is introduced. A prototype was developed to verify the effectiveness of the control method. The output distortion is close to that of the control with extra sensor.https://ieeexplore.ieee.org/document/8864058/Current-sensorless controlsoft switchingextra-LC auxiliary resonant snubber inverter |
| spellingShingle | Hailin Zhang Jun Yao Baoquan Kou Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor IEEE Access Current-sensorless control soft switching extra-LC auxiliary resonant snubber inverter |
| title | Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor |
| title_full | Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor |
| title_fullStr | Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor |
| title_full_unstemmed | Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor |
| title_short | Initial Resonant Current Control for Extra-LC Auxiliary Resonant Snubber Soft-Switching Inverter Without Filter Inductor Current Sensor |
| title_sort | initial resonant current control for extra lc auxiliary resonant snubber soft switching inverter without filter inductor current sensor |
| topic | Current-sensorless control soft switching extra-LC auxiliary resonant snubber inverter |
| url | https://ieeexplore.ieee.org/document/8864058/ |
| work_keys_str_mv | AT hailinzhang initialresonantcurrentcontrolforextralcauxiliaryresonantsnubbersoftswitchinginverterwithoutfilterinductorcurrentsensor AT junyao initialresonantcurrentcontrolforextralcauxiliaryresonantsnubbersoftswitchinginverterwithoutfilterinductorcurrentsensor AT baoquankou initialresonantcurrentcontrolforextralcauxiliaryresonantsnubbersoftswitchinginverterwithoutfilterinductorcurrentsensor |