Rupesh G. Wandhare

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Significant expansion of PV-grid installations have escalated new problems of PV penetration because of intermittent nature of the PV source and inertia-less interface. In this paper, a novel active and reactive power control scheme for a single stage PV-grid system is proposed to counter the potential PV penetration problems for the futuristic grid with(More)
Existing standards impose limits on the allowable feeder voltage variation in a distributed generation environment. These stipulations must be respected by the distributed power generators (suppliers), which put a cap on the penetration level. A possible solution is to provide reactive power support to improve the voltage profile. This paper proposes a(More)
Substantial growth in the solar photovoltaic utilization and high PV penetration demands new and more flexible PV power control algorithms. In this paper, a modified control algorithm is proposed for PV based systems which control power yield from the PV installation. The conventional maximum power point tracking (MPPT) algorithms are in extensive use for(More)
This paper proposes a cost effective, compact and precise photovoltaic emulator. It is able to emulate accurately the current-voltage characteristics of a PV source for varying temperature and solar radiation. The proposed system also has the ability to emulate the re-configuration of the PV panels for series and parallel connection. The emulator is(More)
This paper proposes a novel reconfigurable microgrid architecture comprising photovoltaic, wind, microhydro, and fuel cell based renewable energy sources. Transient and extended power backup are provided with ultra-capacitor (UC) and battery storage, respectively. A distinguishing feature of this microgrid is that its various control layers can switch roles(More)
A novel integration scheme of solar photovoltaic (PV) with a large capacity doubly excited induction generator-based wind energy system is described. The proposed scheme uses both the grid- and rotor-side power converters of doubly fed induction generator to inject PV power into the grid. Thus, it renders a cost-effective solution to PV-grid integration by(More)
Inverter driven, inertia-less interface of a large photovoltaic (PV) source with power grid raises challenging penetration issues such as bus voltage fluctuation, active power variation, reactive power flow and poor system dynamics. Extensive efforts are underway to overcome these issues, which tend to put a limit on the maximum PV power injection(More)
This paper proposes a novel control scheme to minimize the disturbance on the PV fed distributed generation system output power in spite of a wide variation in the solar radiation level. The proposed scheme makes use of high energy density ultracapacitor to absorb the effect of intermittent solar radiation. In the event of a sudden fall in the PV power, the(More)
This paper proposes the essential operating modes and control scheme for large capacity, centralized PV-grid systems to overcome the penetration issues. The injected PV power is considered comparable to the existing feeder capacity with typical loads on the line. Various control techniques are proposed to achieve full flexibility of operating mode selection(More)
This paper describes the multi-level reconfigurable hierarchical control of a laboratory prototype Microgrid comprising Photovoltaic (PV), wind turbine, micro-hydro and fuel cell based renewable energy sources. The transient and momentary power back up is incorporated through ultra-capacitor. Prolong power back-up is provided with battery energy storage.(More)