Single-phase three-level SPWM scheme suitable for implementation with DSP

Wu, Fengjiang; Sun, Bo; Peng, H.Y.

doi:10.1049/el.2011.1969

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…1 shows the circuit schematic of an asymmetric single-phase three-level inverter [17], [18]. The circuit is composed of a two-level bridge and a three-level bridge.…”

Section: Single-phase Three-level Inverter Withmentioning

confidence: 99%

Wavelet PWM Technique for Single-Phase Three-Level Inverters

Zheng¹,

Zhang²,

Qiu³

et al. 2015

Journal of Power Electronics

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The wavelet PWM (WPWM) technique has been applied in two-level inverters successfully, but directly applying the WPWM technique to three-level inverters is impossible. This paper proposes a WPWM technique suitable for a single-phase three-level inverter. The work analyzes the control strategy with the WPWM and obtains the design of its parameters. Compared with the SPWM technique for a single-phase three-level inverter under the same conditions, the WPWM can obtain high magnitudes of the output fundamental frequency component, low total harmonic distortion, and simpler digital implementation. The feasibility experiment is given to verify of the proposed WPWM technique.

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“…1 shows the circuit schematic of an asymmetric single-phase three-level inverter [17], [18]. The circuit is composed of a two-level bridge and a three-level bridge.…”

Section: Single-phase Three-level Inverter Withmentioning

confidence: 99%

Wavelet PWM Technique for Single-Phase Three-Level Inverters

Zheng¹,

Zhang²,

Qiu³

et al. 2015

Journal of Power Electronics

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“…For the multistage circuit, when all the PGAs' output signal reach to its saturation output, the idealized measurement range can be expressed as ' 1.5 n c L Nu L   (15) Equation (15) shows that the proposed method has the ability to obtain a very large measurement range if we ignore the electronic noise introduced by the adaptive circuit. Because when N is increased, the range will be enhanced simultaneously.…”

Section: B Improvement In Range and Multistage Circuitmentioning

confidence: 99%

An Adaptive Analog Circuit for LVDT’s Nanometer Measurement Without Losing Sensitivity and Range

et al. 2015

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Abstract-A self-adaptive circuit for the linear variable differential transformer (LVDT) has been developed to enhance its nanometer measurement range without loss resolution. By applying a fuzzy-PID controlled programmable gain amplifier array (PGAA) to produce a reference signal, which can adjust itself according to LVDT's core position, the conditioning circuit has ensured the signal to analog-to-digital converter (ADC) varying in a very small interval over full-scale operating range. Thus the sensitivity of the measurement system can be improved without losing measurement range. The simulation result demonstrated the proposed circuit has solved the contradiction between resolution and range, which usually occurs in weak signal detection. Moreover, the signal-to-noise ratio has been ameliorated greatly. Additionally, the DSP-based signal conditioner, which utilizes the self-adaptive circuit, demonstrates the performance of the novel design and nanometer precision is obtained in a wide range.

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“…Over the past twenty years, many PWM algorithms have been developed for multilevel inverters, including sine PWM (SPWM) [4,5], virtual space-vector PWM (SVPWM) [6,7], selective harmonic elimination PWM [8,9], SVPWM [10][11][12][13][14][15][16][17][18], PWM without common mode voltage [19,20], and PWM with minimal switch loss [21,22]. Of all these PWM algorithms, SVPWM is considered the most attractive because of the following merits: three-phase voltages, which can be generated by the inverter, are transformed into a reference voltage vector, whereas the angle and amplitude of the reference vector are used to calculate the on-time of each voltage vector.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed method can be used as part of the none-NTVs (NNTV) PWM algorithm. 4. The proposed method can be easily implemented using a commercially available motion-control DSP or micro-controller.…”

Section: Introductionmentioning

confidence: 99%

Space‐vector pulse‐width modulation algorithm for multilevel voltage source inverters based on matrix transformation and including operation in the over‐modulation region

Jiang

et al. 2014

IET Power Electronics

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Multilevel voltage source inverters are most promising when employed in high-power and high-voltage applications. As the number of inverter levels increases, the algorithm of space-vector pulse-width modulation (SVPWM) becomes increasingly complex. Based on the intrinsic relationship between SVPWM algorithms for 2-level inverters and those for arbitrary-level inverters, here a novel SVPWM algorithm is proposed for an arbitrary-level inverter. Considering that the nearest three vectors are used to synthesise the reference vector, the on-time of the voltage vector for an arbitrary-level inverter can be acquired from that for a 2-level inverter via the use of a linear transformation. This algorithm is verified through simulation and experiments, with the latter proving that the proposed algorithm can meet the real-time requirements of multilevel inverters.

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Single-phase three-level SPWM scheme suitable for implementation with DSP

Cited by 8 publications

References 2 publications

Wavelet PWM Technique for Single-Phase Three-Level Inverters

Wavelet PWM Technique for Single-Phase Three-Level Inverters

An Adaptive Analog Circuit for LVDT’s Nanometer Measurement Without Losing Sensitivity and Range

Space‐vector pulse‐width modulation algorithm for multilevel voltage source inverters based on matrix transformation and including operation in the over‐modulation region

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Single-phase three-level SPWM scheme suitable for implementation with DSP

Cited by 8 publications

References 2 publications

Wavelet PWM Technique for Single-Phase Three-Level Inverters

Wavelet PWM Technique for Single-Phase Three-Level Inverters

An Adaptive Analog Circuit for LVDT&#x2019;s Nanometer Measurement Without Losing Sensitivity and Range

Space‐vector pulse‐width modulation algorithm for multilevel voltage source inverters based on matrix transformation and including operation in the over‐modulation region

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Product

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An Adaptive Analog Circuit for LVDT’s Nanometer Measurement Without Losing Sensitivity and Range