A Real-Time Selective Harmonic Compensation (SHC) based on Asymmetric Switching Angle Modulation and Current Feedback Control for Cascaded Modular Multilevel Inverters
asymmetric switching angle modulation
,
selective harmonic compensation
,
real time
,
equation-system transformation
With asymmetric switching angle modulation technique, a cascaded modular multilevel inverter (CMI) is able to control real power flow,…
Eliminating the Influence of Capacitor Voltage Ripple on Current Control for Grid-Connected Modular Multilevel Converter
Modular Multilevel Converter
,
Direct Modulation
,
Harmonic Analysis
The harmonics in the output voltage of modular multilevel converter with direct modulation method are analyzed. Proportional-resonant…
Identification of Resonances in Parallel Connected Grid Inverters with LC- and LCL-Filters
Raimo Juntunen ; Juhamatti Korhonen ; Tatu Musikka ; Liudmila Smirnova ; Olli Pyrhönen ; Pertti Silventoinen
LC-Filter
,
LCL-Filter
,
Resonance
,
Resonance Frequency
,
Parallel Connected
,
Grid Inverter
,
Identification
The publication is concentrated on studying the resonances in parallel connected grid filters, (LC and LCL). The parallel connection of high…
Indirect Thermal Control for Improved Reliability of Modular Multilevel Converter by Utilizing Circulating Current
Mohammad Kazem Bakhshizadeh ; Ke Ma ; Poh Chiang Loh ; Frede Blaabjerg
MMC
,
Circulating current
,
active thermal control
,
reliability
,
thermal cycling
Modular Multilevel Converter (MMC) has recently become a popular multilevel topology for high-power applications, where the reliability…
Modulation and Control of a High Performance Hybrid Cascade H-Bridge Seven-Level Active Power Filter with Star Configuration
Zhong Chen ; Yaming Xu ; Zhihui Wang ; Mengnan Li
active power filter
,
hybrid cascade
,
modulation
,
total voltage control
,
voltage distribution control
This paper presents a three-phase four-wire shunt active power filter (APF) based on hybrid cascade H-bridge seven-level converter as its…
PLL-Less Robust Active and Reactive Power Controller for Single Phase Grid-Connected Inverter with LCL Filter
grid connected inverter
,
LCL filter
,
decoupled power control
,
stationary reference
,
PLL-less
,
non-ideal grid
In this paper, a simplified and robust controller for single-phase grid-connected inverter with LCL filter is proposed. The synchronization…
Power-Weighting-based Multiple Input and Multiple Output Control Strategy for Single-Phase PV Cascaded H-Bridge Multilevel Grid-Connected Inverter
Qingyun Huang ; Mengqi Wang ; Wensong Yu ; Alex Q. Huang
power-weighting
,
decouple
,
PV current estimation
,
S&H
,
Feed-forward
This paper presents a power-weighting-based multiple input and multiple output control strategy and performance improvements schemes for…
Smooth Mode Transition of a DC Bus Voltage Controlled PV Inverter using a Novel Phase Locked Loop Method
Partha Pratim Das ; Souvik Chattopadhyay
PLL
,
Utility grid
,
Standalone mode
,
Dsp
This paper describes a control algorithm for smooth transition from standalone to Grid connected mode and grid connected to SA mode of a…
Startup Schemes for Modular Multilevel Converter under Different Load Conditions
Xiaojie Shi ; Bo Liu ; Zhiqiang Wang ; Yalong Li ; Leon M. Tolbert ; Fred Wang
Modular multilevel converter (MMC)
,
high-voltage direct-current (HVDC) transmission systems
,
startup
,
feedforward control
Due to distributed capacitors of MMC inverter, a special capacitor charging process is required in some applications to avoid large inrush arm…
