CPSS Transactions on Power Electronics and Applications最新文献_第10页

Random PWM Selective Harmonic Elimination Method With Master-Slave Mode for Seven-Level MPUC Inverter 七电平MPUC逆变器随机PWM主从式选择性谐波消除方法

CPSS Transactions on Power Electronics and Applications Pub Date : 2023-03-01 DOI: 10.24295/CPSSTPEA.2023.00009

Guohua Li;Zehua Wu;Dongman Cao;Jiaxiang Li

{"title":"Random PWM Selective Harmonic Elimination Method With Master-Slave Mode for Seven-Level MPUC Inverter","authors":"Guohua Li;Zehua Wu;Dongman Cao;Jiaxiang Li","doi":"10.24295/CPSSTPEA.2023.00009","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2023.00009","url":null,"abstract":"A random pulse width modulation (PWM) selective harmonic elimination method with master-slave mode for seven-level modified packed U-cells (MPUC) inverter based on cell division is proposed. In this method, a U-cell in the multilevel MPUC inverter is regarded as a basic cell. And then the multilevel MPUC inverter is regarded as the result of series connection of several basic cells. Firstly, the random pulse width modulation (RPWM) selective harmonic elimination is realized in one basic cell, and the coordinated control among the cells is realized by using the carrier stacking strategy. If the specific harmonic does not appear in the output voltage of each cell, it will not appear in the total voltage after addition. The master-slave mode in RPWM selective harmonic elimination method is proposed in the process of coordinated control of series connected cells. That is, the main cell is mainly used to selectively eliminate specific sub harmonics, and the slave cell is mainly used to control the output of fundamental power, so as to solve the problem that the inverter output level is unnecessary to flip in the traditional method, and reduce the output harmonic distortion.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"8 1","pages":"87-96"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10098701/10099015.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67868398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An Improved Constant Power Generation Algorithm for Photovoltaic Systems 一种改进的光伏系统恒功率产生算法

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00041

Tangwu Yang;Xingshuo Li;Shuye Ding

引用次数: 0

Imbalanced Samples Fault Detection Using GAN-CNN for Power Inverters 基于GAN-NN的电力逆变器不平衡采样故障检测

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00040

Quan Sun;Fei Peng;Hongsheng Li;Xianghai Yu;Guodong Sun

引用次数: 0

Multiport AC-AC-DC Converter for SNOP With One Medium-Frequency Transformer 一个中频变压器的SNOP多端口AC-AC-DC变换器

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00034

Dajun Ma;Wu Chen;Liangcai Shu;Kai Hou;Ruihuang Liu;Chenyu Zhang

{"title":"Multiport AC-AC-DC Converter for SNOP With One Medium-Frequency Transformer","authors":"Dajun Ma;Wu Chen;Liangcai Shu;Kai Hou;Ruihuang Liu;Chenyu Zhang","doi":"10.24295/CPSSTPEA.2022.00034","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2022.00034","url":null,"abstract":"With the access of increased renewable energy sources, the conventional AC distribution network is hard to flexibly adjust the line voltage and power flow. Therefore, the soft normally open point (SNOP) is applied to increase the flexibility of AC distribution network. The existing converters for SNOP use many submodules (SMs) and passive components, which have the poor economy. On this basis, a multiport AC-AC-DC converter for SNOP with one medium-frequency transformer (MFT) is proposed in this paper. The proposed multiport AC-AC-DC converter is based on the back-to-back (BTB) cascaded H-bridge (CHB) converter structure, and uses several LC resonant circuits and one MFT to replace the multiple DC-DC converters in the existing BTB CHB converters. Therefore, many SMs and passive components can be saved. Moreover, the voltages at multiple AC and DC ports of proposed multiport AC-AC-DC converter are completely decoupled, and the multiple AC and DC systems can be adjusted independently. The detailed circuit structure, control principle and design procedure of multiport AC-AC-DC converter are introduced in this paper. Finally, the simulation and experimental results verify the effectiveness of multiport AC-AC-DC converter.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"7 4","pages":"374-385"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10016241/10016246.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50327005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Improved Virtual Impedance Control Based Oscillation Suppression Method for MMC DC System 一种改进的基于虚拟阻抗控制的MMC直流系统振荡抑制方法

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00032

Lei Gao;Huiyuan Zhang;Jun Xu

{"title":"An Improved Virtual Impedance Control Based Oscillation Suppression Method for MMC DC System","authors":"Lei Gao;Huiyuan Zhang;Jun Xu","doi":"10.24295/CPSSTPEA.2022.00032","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2022.00032","url":null,"abstract":"The oscillation phenomenon has detrimental effects on the stable operation of the module multilevel converter (MMC)-based high voltage DC (MMC-HVDC) transmission system. The virtual inductance or resistance control can be used as the oscillation suppression method to limit the system instability. To improve the oscillation suppression effectiveness based on the existing virtual impedance control methods. This paper first analyzes the DC output impedance of the MMC-HVDC system and verify the correctness of the DC output impedance. Then an improved virtual impedance control (IVIC) method is presented based on the traditional virtual resistance control (TVRC) and the phase lag compensation control (PLCC) method. Under the same conditions, the Nyquist stability analysis is presented to verify the MMC system stability can be more improved by using the IVIC method compared with the TVRC and PLCC. In PSCAD/EMTDC, the simulation results verify that the IVIC can suppress the MMC DC system oscillation and can improve the oscillation suppression effectiveness compared with the TVRC and PLCC. The stability analysis and simulation results verify that the proposed IVIC method can help to mitigate the detri-mental effects caused by system instabilities and oscillations.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"7 4","pages":"347-358"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10016241/10016244.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50326896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The Structure and Its Leakage Inductance Model of Integrated LLC Transformer With Wide Range Value Variation 大范围变化的集成LLC变压器的结构及其漏电感模型

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00037

Qingbin Chen;Xujia Long;Yaodong Chen;Shaohui Xu;Wei Chen

{"title":"The Structure and Its Leakage Inductance Model of Integrated LLC Transformer With Wide Range Value Variation","authors":"Qingbin Chen;Xujia Long;Yaodong Chen;Shaohui Xu;Wei Chen","doi":"10.24295/CPSSTPEA.2022.00037","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2022.00037","url":null,"abstract":"The integrated magnetics technology is famous in academic and industrial applications to achieve low profile and high power density of switch-mode power supply (SMPS). The integrated LLC transformer is widely used in LLC converter, where the transformer and resonant inductor are integrated into a magnetic component. However, the value Variation range of leakage inductance of conventional integrated transformer structures is limited due to the low profile and small volume in some planar applications. In this paper, a new integrated LLC transformer structure and its leakage inductance adjustment method are proposed. Based on the two-dimensional equivalent model of the structure, the distribution of the leakage magnetic field and the leakage inductance calculation model of the proposed transformer structure are established. The proposed structure can improve the value variation range of leakage inductance in some special applications and is easily achieved in the planner structure. Finally, the design guideline of the proposed integrated LLC transformer is obtained. Simulation results and prototype experiment results verify the correctness and flexibility of the theoretical analysis.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"7 4","pages":"409-420"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10016241/10016268.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50326998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Function Integral Sliding Mode-Based Model Predictive Current Control for PMSM Drives With DC-Bus Voltage Observer 基于非线性函数积分滑模的永磁同步电机直流电压观测器预测电流控制

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00036

Qingfang Teng;Hongying Yang;Jie Tian

{"title":"Nonlinear Function Integral Sliding Mode-Based Model Predictive Current Control for PMSM Drives With DC-Bus Voltage Observer","authors":"Qingfang Teng;Hongying Yang;Jie Tian","doi":"10.24295/CPSSTPEA.2022.00036","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2022.00036","url":null,"abstract":"As for permanent magnet synchronous motor (PMSM) drive systems with dc-bus voltage sensor failure, a non-linear function integral sliding mode (NFISM)-based finite-control-set model predictive current control (FCS MPCC) strategy with sensorless is put forward. In principle, measuring dc-bus voltage of voltage source inverter is vital for PMSM drives to perform FCS MPCC. Aiming at dc-bus voltage sensor unavailable, a new nonlinear extended state observer (ESO) is developed to estimate dc-bus voltage. In the light of load torque disturbance, a modified isokinetic reaching law is proposed and then outer loop NFISM speed regulator is brought forward to heighten the system robustness against load variation and attenuate the chatting level. What's more, for the sake of decreasing the stator current ripple and improve dynamic response, an inner-loop FCS MPCC scheme is adopted. The proposed NFISM-based FCS MPCC with nonlinear ESO can make PMSM drives have satisfactory speed and torque performance. Compared with PI-based and ISM-based speed regulator, respectively, the proposed NFISM-based one enables FCS MPCC PMSM drive system to have stronger anti-load variation ability and weaker fluctuation. StarSim/Hardware experiments validate the feasibility and effectiveness of the proposed strategy.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"7 4","pages":"399-408"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10016241/10016271.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50326999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Multi-resonant DC-DC Converter Based on Switched Capacitor Pre-voltage Reduction 基于开关电容预降压的多谐振DC-DC变换器

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00038

Qi Guo;Xiangjun Zhang;Yueshi Guan;Yuhao Sun;Yijie Wang;Dianguo Xu

{"title":"Multi-resonant DC-DC Converter Based on Switched Capacitor Pre-voltage Reduction","authors":"Qi Guo;Xiangjun Zhang;Yueshi Guan;Yuhao Sun;Yijie Wang;Dianguo Xu","doi":"10.24295/CPSSTPEA.2022.00038","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2022.00038","url":null,"abstract":"This paper proposes a multi-resonant DC-DC converter based on switched capacitor pre-buck. The converter can realize soft switching in the full load range and has good voltage gain characteristics. In order to effectively reduce the voltage stress on the device, the front stage of the converter adopts a stacked structure of switched capacitors. This structure realizes the function of high step-down ratio by pre-stepping the bus voltage. After reasonable parameter design and frequency matching, the third harmonic is superimposed on the high-order resonant link of the latter stage during the energy transmission process. This will significantly reduce the loss of the secondary side rectifier diode and increase the efficiency. This paper introduces the working principle of the converter, proposes a five-element parameter design scheme, and analyzes the parameter dispersion to assist the parameter design scheme to make it more reasonable, and finally conducts experimental verification. A 100 W prototype with 400 V input and 12 V output was built in the laboratory to verify the correctness of the theoretical analysis.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"7 4","pages":"421-431"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10016241/10016269.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50327000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accurate, Fast and Power Efficient PV Emulator Based on Hybrid Passive and Active Circuits 基于无源和有源混合电路的精确、快速、高效的光伏模拟器

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00039

Habes Ali Khawaldeh;Mohammad Al-Soeidat;Dylan Dah-Chuan Lu;Li Li

{"title":"Accurate, Fast and Power Efficient PV Emulator Based on Hybrid Passive and Active Circuits","authors":"Habes Ali Khawaldeh;Mohammad Al-Soeidat;Dylan Dah-Chuan Lu;Li Li","doi":"10.24295/CPSSTPEA.2022.00039","DOIUrl":"https://doi.org/10.24295/CPSSTPEA.2022.00039","url":null,"abstract":"A photovoltaic emulator (PVE) has been proposed based on a physical equivalent photovoltaic cell model. It has fast dynamic performance that is compatible with a real PV system. The PV emulator can analyze and assess PV systems, including maximum power point tracking (MPPT). It is power efficient at the maximum power point. However, it has higher power loss at an open-circuit voltage (OCV). This paper, therefore, presents a hybrid solution using a switching circuit (SC) paralleled with the diode string (DS) to minimize the power loss. The SC consists of a two-switch non-inverting buck-boost dc/dc converter. The DS operates with a low power loss region, i.e., the current source region (CSR) of the I-V curve, in which the SC switches in to replace the DS in the voltage source region (VSR) to minimize power loss of the DS while maintaining the emulator's circuit operation. The SC handles only a fraction of the rated emulator power and has a much narrower control bandwidth than a pure switching converter-based solution. Experimental results show that in the worst-case scenario, i.e., OCV condition, the efficiency and temperature of the PVE based on DS alone configuration reach 2.8% and 94.2 °C, respectively, as compared to 85.98% and 26.5 °C for the proposed hybrid solution. Under the 30% to 60% insolation change test, the suggested PV emulator lags the actual PV panel by only 3.2 ms, compared to 120 ms lagging for a commercial emulator. Furthermore, the control strategy is implemented to handle the trade-off between thermal and dynamic performances of the proposed solution.","PeriodicalId":100339,"journal":{"name":"CPSS Transactions on Power Electronics and Applications","volume":"7 4","pages":"432-441"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/7873541/10016241/10016267.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50327002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Review of Magnetic Core Materials, Core Loss Modeling and Measurements in High-Power High-Frequency Transformers 高功率高频变压器铁心材料、铁心损耗建模与测量综述

CPSS Transactions on Power Electronics and Applications Pub Date : 2022-12-01 DOI: 10.24295/CPSSTPEA.2022.00033

Zenong Li;Weijian Han;Zhen Xin;Qing Liu;Jianliang Chen;Poh Chiang Loh

引用次数: 5