53rd IEEE Conference on Decision and Control 2014
DOI: 10.1109/cdc.2014.7039891
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Viability and analysis of implementing only voltage-power droop for parallel inverter systems

Abstract: Abstract-In microgrids that are predominantly resistive, real and reactive power can be controlled by implementation of voltage and frequency droop laws respectively. However, the variable frequency displayed by such a system complicates analysis such that design approaches rely on approximations and linearized models. In this work, we present a modified form of droop control where only the voltage versus real power relationship is upheld and the frequency is held constant. Since the frequency is not explicitl… Show more

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Cited by 9 publications
(9 citation statements)
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“…This is usually achieved by measuring instantaneous power (i.e., p k = v k (t)i k (t)) and passing it through a first order low pass filter (LPF) with bandwidth ω P which is designed to be much smaller than the voltage control loop. Reference [27] proposes a framework for obtaining a near-exact solution for determining the active power for a single VSI serving a load.…”
Section: B Outer Voltage-active Power Droopmentioning
confidence: 99%
“…This is usually achieved by measuring instantaneous power (i.e., p k = v k (t)i k (t)) and passing it through a first order low pass filter (LPF) with bandwidth ω P which is designed to be much smaller than the voltage control loop. Reference [27] proposes a framework for obtaining a near-exact solution for determining the active power for a single VSI serving a load.…”
Section: B Outer Voltage-active Power Droopmentioning
confidence: 99%
“…Consider a single LIS unit with N DERs connected in parallel. A power-voltage droop control is implemented for each DC-DC converter unit as described in [13] and extended to the parallel converter system of Figure 3. The Power output of j th DC-DC converter, P j , is compared against a desired reference power output set point, P * j , demanded from the j th DER.…”
Section: A System Topologymentioning
confidence: 99%
“…Theorem 1: Consider the single-converter system in Figure 4 with inductance L, D = D n andG c =G c,n (s) as given in (9); and the multi-converter system described in Figures 6 and 7 whereG c k (s) are given by (10), k γ k D kG c k = D nGc,n , and k γ k = 1, γ k > 0 for 1 ≤ k ≤ m. 1. [Performance Equivalence]: Any outer-loop controller K v that stabilizes the single-converter system yields identical performance when applied to the multi-converter system; more precisely, for the same exogenous inputs -the reference V des , the load disturbance i load , and noise n = k γ k n k , the steady-state regulated signals (V des − V, D n Lũ , V ) for the single-converter system are the same as the regulated signals…”
Section: Convertersmentioning
confidence: 99%