Power quality improvement in grid integrated solar water pumping system using Vienna converter

Abstract

Summary A new topology for solar water pumping (SWP) using a permanent magnet synchronous motor drive is proposed in this work. With the aim of overcoming the intermittency issues of solar photovoltaic (PV) generation, the utility grid is introduced in order to provide a reliable water pumping operation. The grid interface is facilitated using a Vienna rectifier, which enables the rated operation of the pump. The Vienna rectifier maintains the direct current (DC) link voltage, removes the grid current harmonics, and ensures unity power factor at the grid. A novel multi‐resonant second‐order generalized integrator frequency‐locked loop (FLL)–based approach is proposed for extraction of fundamental positive sequence components from the grid voltages. The novelty of the proposed control approach lies in the elimination of dominant lower order harmonics from the sensed grid voltages through selective harmonic elimination. The FLL structure makes the control structure flexible to grid frequency change within small range. The optimum power point of solar PV array is extracted using an incremental conductance scheme. A sensorless field‐oriented control is used for regulating the pump speed. The system ) performance is observed under different operating conditions on a laboratory developed prototype. Test results confirm the satisfactory performance and improved power quality indices fulfilling the IEEE‐519 standard.

Proportional integral resonance based sliding mode control of VIENNA rectifier for charging station of tramcar under unbalanced power supply

“…However, the total harmonic distortion (THD) of the AC current is increased and thus the power quality is decreased. Therefore, the VIENNA‐based rectifier topology is emerging and becomes popular due to the advantages of simple structure, low input current THD, low voltage stress, etc 13,14 . Consequently, the VIENNA rectifier is introduced in this article for charging the tramcar, and thus the topology of the charging station is given in Figure 2.…”

Development of grid‐interactive inverter utilising induction motor driven photovoltaic water pumping system

“…These issues are extensively researched, and several solutions are suggested to make it practically viable. In recent scenario, this SPVWPS can be divided into three categories, viz., stand‐alone SPVWPS [3, 4], battery‐supported SPVWPS [5, 6], and grid‐supported SPVWPS [7, 8].…”

“…These systems are more economical compared to battery‐supported SPVWPS [16]. In the grid‐supported SPVWPS, voltage source converter or Vienna rectifier is utilised as bidirectional power converter [7, 8] and the boost power factor correction (PFC) is utilised as unidirectional power converter [10, 11, 15].…”

Development of grid‐connected solar water pumping system utilizing diode bridge

“…In recent scenario, SWPS can be divided in three categories, viz, stand-alone SWPS, 8,9 battery-supported SWPS, 10 and grid-supported SWPS. 11,12 Stand-alone SWPS are available in two configuration, ie, single-stage and two-stage. [13][14][15] In single-stage system, the DC voltage developed by solar photovoltaic (SPV) source is directly converted to AC voltage using voltage source inverter (VSI) and supplied to the motor.…”

“…The topology presented by Sharma et al 21 consists of a higher number of power electronics switches, which adversely affects the efficiency and increases the control complexity. Another topology of three-phase grid-integrated SWPS is proposed utilizing the Vienna rectifier in other three studies, 12,22,23 where number of power electronics switches are reduced.…”