Details
| Original language | English |
|---|---|
| Pages (from-to) | 351-358 |
| Number of pages | 8 |
| Journal | European Transactions on Electrical Power |
| Volume | 2 |
| Issue number | 6 |
| Publication status | Published - Nov 1992 |
Abstract
Several soft switching three‐phase inverters have been proposed in the literature, using a resonant AC or DC voltage link in order to reduce switching losses. This allows operation with higher switching frequencies. In these inverters, the switching instances have to be synchronized with the periodic zero crossings of the link voltage. Thus synchronous pulse modulation strategies like Sigma‐Delta‐Modulation have to be used for control. The benefit of high switching frequency has to be considered in the light of performance of the modulation scheme, which can be measured by determining the r.m.s. value of the distortion current. In this paper, this magnitude is calculated analytically for three‐phase inverters controlled by synchronous Sigma‐Delta Modulation. The derivation is based on the assumptions of constant link frequency and large ratio of link‐ to output frequency. The solutions allow to calculate the r.m.s. distortion current for any periodic shape of the link voltage including DC. Simulations show that the results hold for link‐ to output frequency ratios down to 100. The spectral performance of synchronous Sigma‐Delta‐Modulation is compared with conventional pulse width modulation.
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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In: European Transactions on Electrical Power, Vol. 2, No. 6, 11.1992, p. 351-358.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Harmonic distortion in three‐phase inverters controlled by synchronous sigma‐delta‐modulation
AU - Mertens, A.
PY - 1992/11
Y1 - 1992/11
N2 - Several soft switching three‐phase inverters have been proposed in the literature, using a resonant AC or DC voltage link in order to reduce switching losses. This allows operation with higher switching frequencies. In these inverters, the switching instances have to be synchronized with the periodic zero crossings of the link voltage. Thus synchronous pulse modulation strategies like Sigma‐Delta‐Modulation have to be used for control. The benefit of high switching frequency has to be considered in the light of performance of the modulation scheme, which can be measured by determining the r.m.s. value of the distortion current. In this paper, this magnitude is calculated analytically for three‐phase inverters controlled by synchronous Sigma‐Delta Modulation. The derivation is based on the assumptions of constant link frequency and large ratio of link‐ to output frequency. The solutions allow to calculate the r.m.s. distortion current for any periodic shape of the link voltage including DC. Simulations show that the results hold for link‐ to output frequency ratios down to 100. The spectral performance of synchronous Sigma‐Delta‐Modulation is compared with conventional pulse width modulation.
AB - Several soft switching three‐phase inverters have been proposed in the literature, using a resonant AC or DC voltage link in order to reduce switching losses. This allows operation with higher switching frequencies. In these inverters, the switching instances have to be synchronized with the periodic zero crossings of the link voltage. Thus synchronous pulse modulation strategies like Sigma‐Delta‐Modulation have to be used for control. The benefit of high switching frequency has to be considered in the light of performance of the modulation scheme, which can be measured by determining the r.m.s. value of the distortion current. In this paper, this magnitude is calculated analytically for three‐phase inverters controlled by synchronous Sigma‐Delta Modulation. The derivation is based on the assumptions of constant link frequency and large ratio of link‐ to output frequency. The solutions allow to calculate the r.m.s. distortion current for any periodic shape of the link voltage including DC. Simulations show that the results hold for link‐ to output frequency ratios down to 100. The spectral performance of synchronous Sigma‐Delta‐Modulation is compared with conventional pulse width modulation.
UR - http://www.scopus.com/inward/record.url?scp=0026944235&partnerID=8YFLogxK
U2 - 10.1002/etep.4450020603
DO - 10.1002/etep.4450020603
M3 - Article
AN - SCOPUS:0026944235
VL - 2
SP - 351
EP - 358
JO - European Transactions on Electrical Power
JF - European Transactions on Electrical Power
SN - 1430-144X
IS - 6
ER -