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THREE-PHASE BRIDGE INVERTER FOR 9kW DOUBLY SALIENT PERMANENT MAGNET MOTOR
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作者 黄伟君 秦海鸿 +1 位作者 王慧贞 严仰光 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2006年第1期27-33,共7页
The three-phase bridge inverter is used as the converter topology in the power controller for a 9 kW doubly salient permanent magnet (DSPM) motor. Compared with common three-phase bridge inverters, the proposed inve... The three-phase bridge inverter is used as the converter topology in the power controller for a 9 kW doubly salient permanent magnet (DSPM) motor. Compared with common three-phase bridge inverters, the proposed inverter works under more complicated conditions with different principles for special winding back EMFs, position signals of hall sensors, and the given mode of switches. The ideal steady driving principles of the inverter for the motor are given. The working state with asymmetric winding back EMFs, inaccurate position signals of hall sensors, and the changing input voltage is analyzed. Finally, experimental results vertify that the given anal ysis is correct. 展开更多
关键词 doubly salient permanent magnet motor three-phase bridge inverter winding back EMF position signal of hall sensor input voltage
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Research on Mixed Logic Dynamic Modeling and Finite Control Set Model Predictive Control of Multi-Inverter Parallel System
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作者 Xiaojuan Lu Mengqiao Chen Qingbo Zhang 《Energy Engineering》 EI 2023年第3期649-664,共16页
Parallel connection of multiple inverters is an important means to solve the expansion,reserve and protection of distributed power generation,such as photovoltaics.In view of the shortcomings of traditional droop cont... Parallel connection of multiple inverters is an important means to solve the expansion,reserve and protection of distributed power generation,such as photovoltaics.In view of the shortcomings of traditional droop control methods such as weak anti-interference ability,low tracking accuracy of inverter output voltage and serious circulation phenomenon,a finite control set model predictive control(FCS-MPC)strategy of microgrid multiinverter parallel system based on Mixed Logical Dynamical(MLD)modeling is proposed.Firstly,the MLD modeling method is introduced logical variables,combining discrete events and continuous events to form an overall differential equation,which makes the modeling more accurate.Then a predictive controller is designed based on the model,and constraints are added to the objective function,which can not only solve the real-time changes of the control system by online optimization,but also effectively obtain a higher tracking accuracy of the inverter output voltage and lower total harmonic distortion rate(Total Harmonics Distortion,THD);and suppress the circulating current between the inverters,to obtain a good dynamic response.Finally,the simulation is carried out onMATLAB/Simulink to verify the correctness of the model and the rationality of the proposed strategy.This paper aims to provide guidance for the design and optimal control of multi-inverter parallel systems. 展开更多
关键词 Multiple inverters in parallel microgrid mixed logic dynamic model finite control set model predictive control circulation
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A new three-phase 5-level current-source inverter 被引量:4
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作者 BAO Jian-yu BAI Zhi-hong +1 位作者 WANG Qing-song ZHANG Zhong-chao 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第12期1973-1978,共6页
The new three-phase 5-level current-source inverter (CSI) proposed in this paper was developed by connecting three separate single-phase 5-level CSIs in series, and its operational principle was analyzed. There are tw... The new three-phase 5-level current-source inverter (CSI) proposed in this paper was developed by connecting three separate single-phase 5-level CSIs in series, and its operational principle was analyzed. There are two major problems existing in current-source multilevel inverters, one is the complex PWM control method (2-logic to 3-logic conversion), and the other is the problem of current-unbalance between different levels. A simple current-balance control method via DC current feedback is applied in each single-phase 5-level CSI cell to implement the current-balance control between different levels. And to reduce the output current harmonics, POD PWM control technique was used. Simulation and experimental results showed that this new three-phase 5-level CSI topology operates correctly. 展开更多
关键词 three-phase Current-source inverter (CSI) 5-level HARMONICS POD PWM
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Control strategy of LCL-type three-phase photovoltaic grid connected inverter 被引量:2
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作者 WANG Si-hua WANG Jin-qiang 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2019年第3期254-265,共12页
The grid-connected inverter with LCL filter has the ability of easily attenuating high-frequency current harmonics. However, its suppression effect on the background harmonics in grid voltage is limited. A control str... The grid-connected inverter with LCL filter has the ability of easily attenuating high-frequency current harmonics. However, its suppression effect on the background harmonics in grid voltage is limited. A control strategy is presented, which is composed of an inner loop of capacitor current feedforward, an outer loop of grid-current feedforward and feedforward of grid voltage. The limitations and steps of parameters design for LCL filter are analyzed. Meanwhile, the capacitor current loop is employed to damp the resonant peak caused by the LCL filter and enhance the stability. The properties of different controllers are analyzed and compared, thereinto quasi-proportional-rasonant (PR) controller realizes the control with zero steady-state error of AC variables in static coordinates. In order to suppress the current distortion effected by the background harmonics in grid voltage, the feed-forward function is calculated for the grid-connected inverter with an LCL filter. After simplifying the block diagram, a full-feedforward control strategy for grid voltage is proposed. Theoretical analysis and Matlab/Simulink simulation results show that the proposed method has the advantages of high steady accuracy, fast dynamic response and strong robustness. 展开更多
关键词 three-phase grid-connected inverter LCL filter active damping quasi-proportional-resonant (PR) control full-feedforward of grid voltages
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The Research of Three-phase Boost/Buck-boost DC-AC Inverter
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作者 Xiangli Li Zhaoyang Yan +1 位作者 Yanni Gao Hanhong Qi 《Energy and Power Engineering》 2013年第4期906-913,共8页
This paper presents a new inverter based on three-phase Boost/Buck-boost single-stage inverter. The basic configuration of the new topology and their fundamental principle are firstly introduced, the method of design ... This paper presents a new inverter based on three-phase Boost/Buck-boost single-stage inverter. The basic configuration of the new topology and their fundamental principle are firstly introduced, the method of design double-loop controller and sliding mode controller are clarified, analyzed and compared in the following. Finally the validity and feasibility of the new topology are tested by simulation. The results indicate that regulation of the voltage transfer ratio and output frequency can be realized optionally by the new converter, furthermore the harmonic distortion of waveform is low. So the inherent drawback of low voltage transfer ratio of traditional converter is effectively settled. This study may provide inspiration for further engineering application. 展开更多
关键词 three-phase BOOST SINGLE-STAGE inverter three-phase BUCK-BOOST SINGLE-STAGE inverter Double-loop CONTROLLER Sliding Mode CONTROLLER
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The Control Technology Research of the Z-source Three-phase Four-bridge Arm Inverter
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作者 Xiangli Li Zhaoyang Yan +2 位作者 Keke Pan Chenghao Ma Hanhong Qi 《Energy and Power Engineering》 2013年第4期733-739,共7页
Z-source inverter can boost the voltage of the DC-side, allow the two switches of the same bridge arm conducting at the same time and it has some other advantages. The zero-sequence current flows through the fourth le... Z-source inverter can boost the voltage of the DC-side, allow the two switches of the same bridge arm conducting at the same time and it has some other advantages. The zero-sequence current flows through the fourth leg of the three-phase four-leg inverter so the three-phase four-leg inverter can work with unbalanced load. This paper presents a Z-source three-phase four-leg inverter which combines a Z-source network with three-phase four-leg inverter. The circuit uses simple SPWM modulation technique and the fourth bridge arm uses fully compensated control method. The inverter can maintain a symmetrical output voltage when the proposed scheme under the unbalanced load. 展开更多
关键词 Z-SOURCE inverter three-phase FOUR-LEG inverter Unbalanced Load Imbalanced VOLTAGE
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The improved PAC method for a three-phase PWM grid-connected inverter
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作者 李杰 马祎炜 +2 位作者 陈国呈 王得利 俞俊杰 《Journal of Shanghai University(English Edition)》 CAS 2008年第6期560-564,共5页
In this paper, a vector regulating principle of the phase and amplitude control PAC method for three-phase grid-connected inverters is presented.To solve the problem of heavy inrush current and slow dynamic response w... In this paper, a vector regulating principle of the phase and amplitude control PAC method for three-phase grid-connected inverters is presented.To solve the problem of heavy inrush current and slow dynamic response when system starts up, the starting voltage prediction control and the current feed-forward control are proposed and used, which improve the dynamic performance of the system in the PAC.The experimental results carried out on a three-phase grid-connected inverter proved the validity of the proposed method. 展开更多
关键词 three-phase pulse width modulation (PWM) grid-connected inverter phase and amplitude control (PAC) starting voltage prediction control current feed-forward control
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Finite Set-Model Predictive Current Control of Three-Phase Voltage Source Inverter for RES (Renewable Energy Systems) Applications
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作者 Ali Almaktoof Atanda Raji Tariq Kahn 《Journal of Energy and Power Engineering》 2014年第4期749-756,共8页
This paper focuses on a combination of three-phase VSI (voltage source inverter) with a predictive current control to provide an optimized system for three-phase inverters that control the load current. A FS-MPC (f... This paper focuses on a combination of three-phase VSI (voltage source inverter) with a predictive current control to provide an optimized system for three-phase inverters that control the load current. A FS-MPC (finite set-model predictive control) strategy for a three-phase VSI for RES (renewable energy systems) applications is implemented. The renewable energy systems model is used in this paper to investigate the system performance when power is supplied to resistive-inductive load. With three different cases, the evaluation of the system is done. Firstly, the robustness of control strategy under variable DC-Link is done in terms of the THD (total harmonic distortion). Secondly, with one prediction step, the system performance is tested using different sampling time, and lastly, the dynamic response of the system with step change in the amplitude of the reference is investigated. The simulations and result analyses are carried out using Matlab/Simulink to test the effectiveness and robustness of FS-MPC for two-level VSI with AC filter for resistive-inductive load supplied by a renewable energy system. 展开更多
关键词 Finite set-model predictive control three-phase voltage source inverter renewable energy system application AC filter Matlab/Simulink.
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DC LOOP-CURRENT DETECTING AND RESTRAINING METHODS FOR PARALLEL INVERTER SYSTEM
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作者 陈良亮 肖岚 严仰光 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2004年第1期1-6,共6页
DC component is contained in inverter output voltage due to many reasons such as the zero-point deviation of operational amplifiers and the differences between power switching transistors′ characteristics. For the pa... DC component is contained in inverter output voltage due to many reasons such as the zero-point deviation of operational amplifiers and the differences between power switching transistors′ characteristics. For the parallel inverter system without output isolation transformers, the difference of DC components of the output voltage can cause large DC loop-current among modular inverters. Aiming at this problem, this paper studies several DC loop-current detecting and restraining methods. By digital adjustment with high precision on the DC components of reference sine wave, the DC components of inverter′s output voltage can be adjusted to restrain DC loop-current. Experimental results prove that the DC loop-current detecting and restraining methods have a good performance. 展开更多
关键词 DC loop-current DETECT digital adjustment parallel inverter
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Inhibition characteristics of circulating current in parallel inverter driving system of mine hoist 被引量:3
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作者 Kuanfang He Yong Wang Dongming Xiao 《International Journal of Coal Science & Technology》 EI 2016年第1期68-76,共9页
This research investigated the outputting circulation current inhibition characteristic which are controlled by the instantaneous feedback voltage in inverter parallel driving of the mine hoist. We established a trans... This research investigated the outputting circulation current inhibition characteristic which are controlled by the instantaneous feedback voltage in inverter parallel driving of the mine hoist. We established a transfer function of the parallel inverters controlled by the close-loop adjustment of instantaneous voltage feedback. The influence of the parameters of the close-loop feedback circuit to the inhibition effects to the outputting circulation current is observed. After analyzing the circulating current inhibition characteristics, the proportion integration (PI) controller is introduced into the close-loop adjustment by instantaneous voltage feedback. The characteristics equation is gained to determine the PI parameters by drawing the Bode plots. The inhibition effects of the proposed controller are examined by the established simulation model of parallel inverter system. The harmonic distortion rate at the outputting voltage frequency value of 4, 10, 20, 41 and 50 Hz, are all lower than 2.32 % by the instantaneous outputting voltage feedback. 展开更多
关键词 Mine hoist parallel inverters Circulating current Inhibition characteristic - Close-loop adjustment
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Coordinated Control for Harmonic Mitigation of Parallel Voltage-source Inverters 被引量:3
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作者 Yang Qi Jingyang Fang +1 位作者 Jiazhe Liu Yi Tang 《CES Transactions on Electrical Machines and Systems》 2018年第3期276-283,共8页
The increasing use of power electronic devices can deteriorate the power quality by introducing voltage and current harmonics.In islanded microgrids,the presence of nonlinear loads can distort the point of common coup... The increasing use of power electronic devices can deteriorate the power quality by introducing voltage and current harmonics.In islanded microgrids,the presence of nonlinear loads can distort the point of common coupling(PCC)voltage,while the dead-time effect can also bring additional circulating current harmonics among parallel inverters.To simultaneously attenuate the PCC voltage harmonics and suppress the dead-time induced circulating current harmonics,this paper proposes a coordinated control strategy for harmonic mitigation of parallel inverters.The proposed control strategy allows inverter impedances to be properly reshaped at selective harmonic frequencies.As a consequence,the PCC voltage harmonics are filtered by the inverter operating in the harmonic compensation mode(HCM),whereas the dead-time induced circulating current harmonics are suppressed by the inverter operating in the harmonic rejection mode(HRM).Experimental results from an islanded microgrid prototype with two parallel inverters are provided to validate the effectiveness of the proposed control strategy. 展开更多
关键词 DEAD-TIME harmonic mitigation impedance shaping parallel inverters nonlinear load
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Decoupling Control Strategy for Single Phase SPWM Parallel Inverters
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作者 Shun-Gang Xu Jian-Ping Xu Tai-Qiang Cao 《Journal of Electronic Science and Technology of China》 2009年第3期258-262,共5页
A deconpling control strategy of inverter parallel system is proposed based on the equivalent output impedance of single phase voltage source SPWM (sinusoidal pulse width modulation) inverter. The active power and r... A deconpling control strategy of inverter parallel system is proposed based on the equivalent output impedance of single phase voltage source SPWM (sinusoidal pulse width modulation) inverter. The active power and reactive power are calculated in terms of output voltage and current of the inverter, and sent to the other inverters in the parallel system via controller area network (CAN) bus. By calculating and decoupling the circumfluence of the active power and reactive power, the inverters can share load current via the regulation of the reference-signal phase and amplitude. Experimental results of an 110V/2kVA inverter parallel system show the feasibility of the decoupling control strategy. 展开更多
关键词 CAN bus current sharing inverterS parallel operation
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Topological Comparison and Analysis of Medium-voltage and High-power Direct-linked PV Inverter 被引量:14
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作者 Xing Zhang Mingda Wang +3 位作者 Tao Zhao Wang Mao Yuhua Hu Renxian Cao 《CES Transactions on Electrical Machines and Systems》 CSCD 2019年第4期327-334,共8页
Among all the renewable energy sources,the installed capacity of solar power generation is the fastest growing in recent years,so photovoltaic(PV)power generation still has great market potential.Compared with low-pow... Among all the renewable energy sources,the installed capacity of solar power generation is the fastest growing in recent years,so photovoltaic(PV)power generation still has great market potential.Compared with low-power systems,large-scale PV systems are more commercially attractive,because they can reduce the cost of the system per watt.The PV inverters with centralized and string structure have been applied in large-scale PV plant,but it is difficult to further increase the voltage and power levels for a single converter.In addition,the line-frequency isolation transformer requires a large amount of materials and has a large volume and weight.Therefore,it is a current trend for large-scale PV system to increase the voltage and power levels to directly connect to the medium-voltage power grid.Based on this,this paper investigates and compares several topologies of PV inverters without line-frequency transformer,including the MMC structure and the three-phase cascaded H-bridge(CHB)structure,which are able to directly connect to the 35kV medium-voltage power grid,and can not only make the voltage and power levels higher,but also further reduce the cost and volume of the whole system. 展开更多
关键词 Direct-linked PV inverter large-scale PV system MMC structure three-phase CHB structure.
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Robust Dichotomy Solution-Based Model Predictive Control for the Grid-Connected Inverters with Disturbance Observer 被引量:5
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作者 Huanyue Liao Xin Zhang Zhijun Ma 《CES Transactions on Electrical Machines and Systems》 CSCD 2021年第2期81-89,共9页
This paper proposes a robust dichotomy-based model predictive control(DS-MPC)with a fixed switching frequency for the grid-connected inverter(GCI).The proposed fast dichotomy algorithm can select and deduce the optima... This paper proposes a robust dichotomy-based model predictive control(DS-MPC)with a fixed switching frequency for the grid-connected inverter(GCI).The proposed fast dichotomy algorithm can select and deduce the optimal voltage vector dynamically through the space vector plane.Therefore,the proposed DS-MPC strategy could ensure dynamic performance and steady-state performance as well.Also,the current control robustness can be improved through DS-MPC with disturbance observer(DO)based on the extended Kalman filter(EKF).The novelty of this control is that the current control with fast dynamic response can be realized in the weak grid,even if the grid voltages are greatly distorted.Simulation and hardware experiments on the weak grid validate the effectiveness of the proposed DS-MPC with the EKF observer approach. 展开更多
关键词 Dichotomy solution-based model predictive control(DS-MPC) three-phase grid-connected inverter(GCI) weak grid voltage vector dichotomy
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Common Mode EMI Reduction through PWM Methods for Three-Phase Motor Controller 被引量:3
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作者 Dong Jiang Jianan Chen Zewei Shen 《CES Transactions on Electrical Machines and Systems》 CSCD 2019年第2期133-142,共10页
Pulse-width sequences are identified as the determining factor for common-mode(CM)voltage,which together with CM path generate CM current.This paper introduces a series of pulse-width modulation(PWM)methods,which are ... Pulse-width sequences are identified as the determining factor for common-mode(CM)voltage,which together with CM path generate CM current.This paper introduces a series of pulse-width modulation(PWM)methods,which are focusing on reducing CM noise of three-phase inverters as motor controller.Firstly,theoretic analysis and PWM reduction methods of CM voltage for general three-phase two-level inverters are introduced.Analysis results indicate that the realization of CM noise reduction should take switching frequency and loop impedance into consideration together to avoid CM resonant phenomenon.The regular three-phase two-level inverter is incapable of eliminating CM voltage because of the limitation of topology.Then,optimal PWM methods applied to for advanced topologies can be utilized to eliminate the CM voltage theoretically.Two typical typologies presented in this paper are three-level inverters and paralleled inverters.Three-level inverters can achieve zero-CM output voltage by selecting zero-CM voltage vectors at the expense of power quality.However,for paralleled inverters,zero-CM PWM method is able to achieve zero CM voltage output,as well as the improved output current harmonics and voltage balancing. 展开更多
关键词 Common-mode voltage conducted EMI PWM methods paralleled inverters.
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Control of mutiple Power Inverters for More Electronics Power Systems:A Review 被引量:4
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作者 Xiaoqiang Guo Weijian Chen 《CES Transactions on Electrical Machines and Systems》 2018年第3期255-263,共9页
With the development and utilization of renewable energy,the scaling of microgrid composed of distributed generation systems and energy storing devices,e.g,photovoltaic(PV),wind power,micro gas turbine,fuel cell,are b... With the development and utilization of renewable energy,the scaling of microgrid composed of distributed generation systems and energy storing devices,e.g,photovoltaic(PV),wind power,micro gas turbine,fuel cell,are becoming much lager.Research on control of multi-inverter parallel is the focus as the key technique,which can improve the reliability of microgrids.The inverters in the microgrid operate in parallel,which not only facilitates the expansion of the microgrid but also improves the reliability of the operation of the microgrid system in off-grid mode.The key to the parallel operation of the inverter is to achieve even distribution of the load current.In this paper,a comprehensive review on the control strategies of parallel-operated inverters is presented.Also,the detailed analysis,comparison,and discussion on the existing parallel control strategies are investigated. 展开更多
关键词 parallel inverters MICROGRID distributed power system
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Inverter power supply system for high-power twin-wire pulsed GMAW
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作者 Wu Kaiyuan He Zuwei Liang Zhuoyong 《China Welding》 EI CAS 2016年第2期69-75,共7页
A type of novel inverter power supply system for high-power twin-wire pulsed gas metal arc welding (GMAW) is presented mainly for dealing with the disadvantages of the conventional power supply for twin-wire pulsed ... A type of novel inverter power supply system for high-power twin-wire pulsed gas metal arc welding (GMAW) is presented mainly for dealing with the disadvantages of the conventional power supply for twin-wire pulsed GMA W of which the output power is generally difficult to increase due to limitations of the power of semiconductors and the power density of magnetic devices. In the power supplies for the master and slave arcs, the digital signal processor (DSP) TMS320F28335 is used to form the DSP- based synergic control system for parallel high-power pulsed GMA W, which achieves high-power output of two parallel inverters controlled by a single DSP ; master-slave communication is achieved by using e controller area network (eCAN)module of DSP, thas realizing anti-phase pulse output of high-power twin-wire pulsed GMA W and reducing the interference between twin arcs. The experiment results demonstrate that the designed inverter power supply system for high-power twin-wire pulsed GMAW can bring about high-power efficiency of welding, stable welding process and proper formation of welds. 展开更多
关键词 twin-wire pulsed GMAW HIGH-POWER parallel inverter power supply synergic control
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Dual-loop Control Strategy for Grid-connected Inverter with LCL Filter
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作者 Qiubo Peng Hongbin Pan +1 位作者 Yong Liu Lidan Xiang 《Energy and Power Engineering》 2013年第4期97-101,共5页
As to the concrete topology of three-phase LCL type grid-connected inverter with damping resistance, mathematical model was deduced in detail, using method of equivalent transformation to the structure diagram, dampin... As to the concrete topology of three-phase LCL type grid-connected inverter with damping resistance, mathematical model was deduced in detail, using method of equivalent transformation to the structure diagram, damping resistance was virtualized, mathematical model under the DQ frame that can realize decoupling control was established, a dual-loop control strategy for grid-connected inverter with LCL filter was proposed, the system stability was analyzed and the design method of controller was given. The proposed method overcame the flaws of loss increase, efficiency reduce and cost increase which were caused by damping resistance in LCL type grid-connected inverter, the system efficiency and power supply quality of the output were improved. Feasibility and effectiveness of the new method were validated by simulation and experimental results. 展开更多
关键词 Virtual DAMPING LCL Filter three-phase GRID-CONNECTED inverter DECOUPLING Control
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Research on a New Control Strategy of Three Phase Inverter for Unbalanced Loads
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作者 Wenhua HU Weiming Ma Chunxi LIU 《Journal of Electromagnetic Analysis and Applications》 2010年第1期39-44,共6页
One of the very important functions of three-phase inverter is to maintain the symmetric three-phase output voltage when the three-phase loads are unbalanced. Although the traditional symmetrical component decomposing... One of the very important functions of three-phase inverter is to maintain the symmetric three-phase output voltage when the three-phase loads are unbalanced. Although the traditional symmetrical component decomposing and superimpose theory can keep the voltage balance through compensating the positive-, negative- and zero-sequence components of the output voltage of inverter, however, this method is time-consuming and not suitable for control. Aiming at high power medium frequency inverter source, a P+Resonant (Proportion and Resonant) controller which ensured a balanced three phase output voltage under unbalanced load is proposed in this paper. The regulator was proved to be applicable to both three-phase three-wire system and three-phase four-wire system and developed two methods of realization. The simulation results verified that this method can suppressed effectively the output voltage distorted caused by the unbalanced load and attained a high quality voltage waveforms. 展开更多
关键词 three-phase inverter Unbalanced Load the three-phase OUTPUT Voltage SYMMETRIC Medium Frequency P+Resonant CONTROLLER
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SVM strategy and analysis of a three-phase quasi-Z-source inverter with high voltage transmission ratio
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作者 CHEN DaoLian ZHAO JiaWei QIN ShuRan 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2023年第10期2996-3010,共15页
Herein,we propose a novel three-phase quasi-Z-source inverter with a high voltage transmission ratio to address challenges such as high switching loss and sizeable magnetic components in the basic quasi-Z-source inver... Herein,we propose a novel three-phase quasi-Z-source inverter with a high voltage transmission ratio to address challenges such as high switching loss and sizeable magnetic components in the basic quasi-Z-source inverter.The proposed circuit topology,control strategy,and related analysis are presented.The circuit topology of the inverter comprises a quasi-Z-source network with an integrated magnetic inductor,an active clamp circuit,a three-phase inverter bridge,and an output LC filter,all of which are connected in series.An improved 12-sector space vector modulation scheme is proposed based on the root-mean-square value of the voltage and the instantaneous value of the current.Furthermore,analyses of the inverter voltage transmission ratio,resonant process,and parametric design guidelines for integrated magnetic inductor and zero-voltage switching conditions are presented.Experimental results on a 1-kVA prototype inverter demonstrate that the proposed inverter exhibits a higher transmission ratio and efficiency than existing inverters;thus,the proposed inverter would have broad prospects in low-voltage DC-AC applications. 展开更多
关键词 quasi-Z-source inverter three-phase inverter ZERO-VOLTAGE-SWITCHING magnetically integrated inductor space vector modulation
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