Proceedings Article10.1109/IECON.2007.4460351
Simple PWM Technique of Capacitor Voltage Balance for Three-Level Inverter with DC-link Voltage Sensor Only
Yen-Shin Lai,Yi-Kai Chou,Sheng-Yu Pai +2 more
- 01 Nov 2007
- pp 1749-1754
26
TL;DR: In this paper, a simple PWM technique of capacitor voltage balance for three-level inverters is presented, where only DC-link voltage sensor is required and the number of sectors per sextant is divided into six sectors rather than four.
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Abstract: This paper presents a simple PWM technique of capacitor voltage balance for three-level inverters. For the presented PWM technique only DC-link voltage sensor is required. As compared to previous methods, current sensor is not required for the presented technique. Moreover, number of sectors per sextant is divided into six sectors rather than four. The presented PWM technique slightly modifies conventional space vector modulation technique by adding a control factor which is used to adjust the distribution of vector times of middle voltage vector according to the voltage of DC-link capacitors. The presented PWM technique is realized using a digital signal processor and experimental results show that the voltage balance of the DC-link capacitors can be achieved even the voltage difference is up to 100 V for a 300 V DC-link system. The harmonic contents of the presented PWM technique and the effect of control factor on the voltage balance are also investigated in this paper. Experimental results derived from a three-phase induction motor drive system are presented to confirm the presented techniques.
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Citations
Space-Vector Pulsewidth Modulation for Three-Level NPC Converter With the Neutral Point Voltage Control
TL;DR: The presented SV-PWM strategy makes it possible to control the neutral point voltage by optimum choice of switch sequence for any position and length of output voltage vector by selecting optimum vectors and their on-time durations in order to reduce quickly the dc-link voltage unbalance.
192
A Comprehensive Review on Space Vector Modulation Techniques for Neutral Point Clamped Multi-Level Inverters
TL;DR: In this article, a comprehensive review of the Space Vector Modulation (SVM) for the Neutral Point Clamped (NPC) Multi-Level Inverters (MLI) is presented.
Comparative Analysis Between Two-Level and Three-Level DC/AC Electric Vehicle Traction Inverters Using a Novel DC-Link Voltage Balancing Algorithm
TL;DR: In this paper, the authors presented an extensive comparative study between a two-and three-level inverter for electric vehicle traction applications, where an advanced control strategy for balancing the two dc-link capacitors is also proposed.
139
DC-Link Voltage Balancing for a Three-Level Electric Vehicle Traction Inverter Using an Innovative Switching Sequence Control Scheme
TL;DR: In this paper, an advanced switching sequence for space-vector pulsewidth modulation (SV-PWM)-based three level neutral-point clamped inverter is presented, which helps to reduce the number of converter switching sequences, compared with the conventional SVM strategy, and keeps the voltage difference between the two dc-link capacitors at the desired voltage level.
122
Modified DC-Bus Voltage-Balancing Algorithm Based Three-Level Neutral-Point-Clamped IPMSM Drive for Electric Vehicle Applications
TL;DR: A modified dc-link voltage-balancing scheme for a three-level neutral-point-clamped inverter with an interior permanent magnet synchronous machine is presented with a wider range of machine operation including field weakening.
64
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A New Neutral-Point-Clamped PWM Inverter
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TL;DR: In this article, a neutral-point-clamped PWM inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed.
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TL;DR: In this article, a new neutral point potential control technique for the three-level neutral-point-clamped PWM inverter is proposed, which distributes the redundant voltage vectors in a manner to obtain stable neutral point voltage under all operating conditions including the zero power factor condition.
A new simplified space-vector PWM method for three-level inverters
Jae-Hyeong Suh,Chang-Ho Choi,Dong-Seok Hyun +2 more
- 14 Mar 1999
TL;DR: In this paper, a simplified space vector PWM (SVPWM) method for three-level inverter is presented, where the selection of switching sequence and the calculation of the dwelling time are done as conventional two-level SVPWM method.
211
Switching frequency optimal PWM control of a three-level inverter
TL;DR: In this article, a switching frequency optimal PWM method (SFO-PWM) was proposed for the control of a three-level inverter with a DC-link neutral point not stabilized from the power input converter.
197