Papers by Sanjeev S. Chauhan
2014 Annual IEEE India Conference (INDICON), 2014
This paper investigates a 12-pulse voltage source converter (VSC) for harmonics mitigation in hig... more This paper investigates a 12-pulse voltage source converter (VSC) for harmonics mitigation in high voltage DC (HVDC) system. The most promising features of the VSC based system are compact and light weight design, short installation and commissioning periods, low operation and maintenance cost and flexibility in control. A current multiplier approach is proposed in this paper inside the voltage control loop for power quality (PQ) improvement at AC mains. The proposed system is designed, modeled and its performance is simulated in MATLAB-SIMULINK environment. The simulated results are presented to demonstrate an improved power quality at the AC mains in term of total harmonic distortion and power factor of the VSC based HVDC system under various transient conditions such as variation of load, load unbalancing and voltage sag in power supply.
2010 Joint International Conference on Power Electronics, Drives and Energy Systems & 2010 Power India, 2010
The load commutated inverter (LCI) based synchronous motor (SM) drive fed through a 12-pulse AC-D... more The load commutated inverter (LCI) based synchronous motor (SM) drive fed through a 12-pulse AC-DC converter results in harmonic mitigation. These drives have further improvement of the power quality at AC mains if an appropriate passive filter is used at the AC mains for power factor correction and harmonic reduction. This paper deals with a simplified optimization algorithm based on
2009 Second International Conference on Emerging Trends in Engineering & Technology, 2009
Abstract This paper aims at the application of a half bridge DC-DC converter as a power factor co... more Abstract This paper aims at the application of a half bridge DC-DC converter as a power factor correction (PFC) converter for a permanent magnet brushless DC motor (PMBLDCM) driven air conditioner. This PFC converter is fed from single-phase AC mains through ...
2009 Annual IEEE India Conference, 2009
Abstract This paper aims at a boost bridge DC-DC converter as a single-stage power factor correct... more Abstract This paper aims at a boost bridge DC-DC converter as a single-stage power factor correction (PFC) converter for a permanent magnet brushless DC motor (PMBLDCM) driven air conditioner. This PFC converter is fed from a single-phase AC mains through a diode ...
Permanent magnet brushless DC (PMBLDC) motors are the latest choice of researchers due to their h... more Permanent magnet brushless DC (PMBLDC) motors are the latest choice of researchers due to their high efficiency, silent operation, compact size, high reliability and low maintenance requirements. These motors are preferred for numerous applications; however, most of ...
The power quality (PQ) disturbances at utility AC mains of a permanent magnet brushless DC motor ... more The power quality (PQ) disturbances at utility AC mains of a permanent magnet brushless DC motor (PMBLDCM) drive are of prime concern in their applications. This paper discusses modeling and simulation of control strategies for operation of various DC-DC converters as power factor correction (PFC) converters for a PMBLDCM drive. The performance simulation of a non-isolated buck-boost converters fed PMBLDCM drive is carried out in MATLAB-SIMULINK environment to demonstrate the effectiveness of the modeling concepts.
In this paper, a permanent magnet brushless DC motor (PMBLDCM) is employed in airconditioning sys... more In this paper, a permanent magnet brushless DC motor (PMBLDCM) is employed in airconditioning systems and operated at rated torque and variable speed to achieve energy conservation. A single-phase single-switch power factor correction (PFC) based single ended primary inductor converter (SEPIC) is used to regulate DC bus voltage of voltage source inverter (VSI) to feed PMBLDCM. The analysis, design and performance evaluation of the proposed PFC converter is carried out for a 1.2 kW, 1200 rpm, 164 V PMBLDCM used in airconditioning system. The proposed PFC converter is modeled and its performance is simulated in Matlab-Simulink environment. An exhaustive evaluation of its performance is carried out to demonstrate improved power factor in wide range of speed of the drive and AC input voltage.
IET Power Electronics, 2010
The load commutated inverter (LCI)-fed synchronous motor (SM) drive, also known as commutatorless... more The load commutated inverter (LCI)-fed synchronous motor (SM) drive, also known as commutatorless motor (CLM) drive, is popular in high power applications. Most promising features of these drives include high efficiency, economic operation, flexibility of operation and variable speed in high power range, which led to their applications in blowers, fans, pumps, mill drives for a range of industries as mining, water treatment plants, chemical, paper, textile, cement, rolling mills and petrochemical plants. However, the power quality (PQ) concerns have resulted in a setback for such applications of these drives. This study investigates various topologies for the mitigation of PQ problems in LCI-fed SM drives using multi-pulse AC-DC converters. A set of hybrid topologies is proposed to feed CLM, which use a multi-winding transformer and diode rectifiers with a chopper cascaded named as 'rectifier-chopper'. These topologies improve PQ at AC mains, that is, reduce total harmonic distortion in the input current and correct the power factor. It also presents a basis for selection of a suitable AC-DC converter for PQ improvement at the input AC mains of the LCI-fed SM drives.
2011 Fourth International Conference on Emerging Trends in Engineering & Technology, 2011
In this paper an improved power quality buck-boost converter fed permanent magnet brush less DC m... more In this paper an improved power quality buck-boost converter fed permanent magnet brush less DC motor (PMBLDCM) drive is employed for adjustable speed operation of PMBLDCM. A single-phase, single-switch AC-DC converter topology based on non-isolated buck-boost converter is employed for power factor correction (PFC) and operated with voltage follower control in discontinuous conduction mode (DCM) operation for sensor reduction. This PFC controller ensures near unity power factor in wide speed range of the drive while restricting the total harmonic distortion (THD) in AC mains current within the specified limits of the IEC standard. The proposed control scheme with PFC converter based PMBLDCM drive is designed, modeled and simulated in Matlab-Simulink environment for an air conditioner compressor driven through a 2 kW, 5.2 Nm PMBLDC motor. The obtained results are presented to validate the effectiveness of the proposed control scheme for power quality improvement at AC mains.
Clean Technologies, 2021
In this paper, a composite control strategy for improved off-grid configuration based on photovol... more In this paper, a composite control strategy for improved off-grid configuration based on photovoltaic (PV array), a wind turbine (WT), and a diesel engine (DE) generator to achieve high performance while supplying nonlinear loads is investigated. To operate the WT efficiently under variable speed conditions and to obtain accurate and fast convergence to the maximum global operating point without a speed sensor, an iterative interpolation method is integrated with the perturbation and observation (P&O) technique. To ensure the balance of power in the system and to achieve the maximum power from the PV array without using any maximum power point tracking (MPPT) method, and ensuring stable operation during the disturbance, a double-loop control strategy for a two-switches buck-boost converter is developed. Furthermore, to protect the synchronous generator of the diesel generator (DG) from the 5th and 7th order-harmonics created by the connected nonlinear loads and to solve the issue of...
Energies, 2020
Configurations, coordinated controller design and applications of various off-grid systems with d... more Configurations, coordinated controller design and applications of various off-grid systems with distributed energy resources (DERs) for an uninterrupted supply, are presented in this paper. The performances for the optimal operation of a diesel generator (DG) in the presence of nonlinear loads, fuel-savings, voltage and frequency regulation, a soft and secure transition among different operating modes, an optimization, and power management control, are validated through simulated results and test results on the prototype to demonstrate the suitability of these configurations with natural energy resources (NERs) for continuous development in remote as well as in isolated locations.
Journal of The Institution of Engineers (India): Series B, 2017
MATEC Web of Conferences, 2016
This paper presents the experimental evaluation of the performance of 3-φ self-excited induction ... more This paper presents the experimental evaluation of the performance of 3-φ self-excited induction generator (SEIG) suitable for pico-hydro power generation system feeding domestic load in remote mountainous region. The use of induction generators is most suitable for renewable energy conversion systems due to their enormous advantages over conventional synchronous generators. Important features of induction generators include the simplicity in construction, ruggedness, simplified control, ease in maintenance and small size per generated kW. The performance characteristics of 3-φ SEIG feeding isolated load are evaluated using MATLAB-Simulink model based on the prevalent renewable energy sources inputs and loading conditions in mountainous terrain of Himalayas. The results are validated using an experimental setup comprising of 3-φ, 3 HP induction motor run as 3-φ induction generator driven by 5HP, 4-pole DC shunt motor acting as prime-mover.
Journal of Electrical Engineering and Technology, 2011
In this paper, a buck DC-DC bridge converter is used as a power factor correction (PFC) converter... more In this paper, a buck DC-DC bridge converter is used as a power factor correction (PFC) converter for feeding a voltage source inverter (VSI) based permanent magnet brushless DC motor (PMBLDCM) drive. The front end of the PFC converter is a diode bridge rectifier (DBR) fed from single phase AC mains. The PMBLDCM is used to drive the compressor of an air conditioner through a three-phase voltage source inverter (VSI) fed from a variable voltage DC link. The speed of the air conditioner is controlled to conserve energy using a new concept of voltage control at a DC link proportional to the desired speed of the PMBLDC motor. Therefore, VSI operates only as an electronic commutator of the PMBLDCM. The current of the PMBLDCM is controlled by setting the reference voltage at the DC link as a ramp. The proposed PMBLDCM drive with voltage control-based PFC converter was designed and modeled. The performance is simulated in Matlab-Simulink environment for an air conditioner compressor load driven through a 3.75 kW, 1500 rpm PMBLDC motor. To validate the effectiveness of the proposed speed control scheme, the evaluation results demonstrate improved efficiency of the complete drive with the PFC feature in a wide range of speed and input AC voltage.
Permanent magnet brushless DC motor (PMBLDCM) drives are being employed in many variable speed ap... more Permanent magnet brushless DC motor (PMBLDCM) drives are being employed in many variable speed applications due to their high efficiency, silent operation, compact size, high reliability, ease of control, and low maintenance requirements. These drives have power quality problems and poor power factor at input AC mains as they are mostly fed through diode bridge rectifier based voltage source inverters. To overcome such problems a single-phase single-switch power factor correction AC-DC converter topology based on a Cuk converter is proposed to feed voltage source inverters based PMBLDCM. It focuses on the analysis, design and performance evaluation of the proposed PFC converter topology for a 1.5 kW, 1500 rpm, 400 V PMBLDCM drive used for an airconditioning system. The proposed PFC converter topology is modelled and its performance is simulated in Matlab-Simulink environment and results show an improved power quality and good power factor in wide speed range of the drive.
2010 Joint International Conference on Power Electronics, Drives and Energy Systems & 2010 Power India, 2010
This paper presents a single ended primary inductor converter (SEPIC) as a power factor correctio... more This paper presents a single ended primary inductor converter (SEPIC) as a power factor correction (PFC) converter which is operated in voltage control mode for the speed control of a permanent magnet brushless DC motor (PMBLDCM) driven air-conditioner (Air-Con). The proposed converter combines the PFC and DC link voltage control in single stage and uses only one controller. The PFC
European Transactions on Electrical Power, 2010
In this paper a power factor correction (PFC) buck-boost converter based adjustable speed voltage... more In this paper a power factor correction (PFC) buck-boost converter based adjustable speed voltage controlled voltage source inverter (VSI) fed permanent magnet brushless DC motor (PMBLDCM) drive is employed for an airconditioning system for the improved energy efficiency. A single-phase single-switch AC-DC converter topology based on the buck-boost converter is employed for PFC which ensures near unity power factor in wide speed range. The speed control scheme has a new concept of DC link voltage control proportional to the desired speed of the PMBLDC motor. Moreover, the control of VSI is used only for electronic commutation of PMBLDCM. Therefore, the number of sensors is reduced as compared to conventional PMBLDCM drive. The proposed control scheme with a PFC converter based PMBLDCM drive is designed, modelled and simulated in Matlab-Simulink environment for an air conditioner compressor. The results obtained are presented to validate the effectiveness of the proposed speed control scheme with PFC feature in wide range of the speed and an input AC mains voltage.
AbstractIn this paper, an improved power quality converter employing forward buck converter topo... more AbstractIn this paper, an improved power quality converter employing forward buck converter topology is used to feed a permanent magnet brushless DC motor (PMBLDCM) drive. Normally, the PMBLDCM drive consists of a three-phase voltage source inverter ( ...
2021 International Conference on Sustainable Energy and Future Electric Transportation (SEFET), 2021
This paper presents an optimal scheme for large deployment of single phase rooftop photovoltaic (... more This paper presents an optimal scheme for large deployment of single phase rooftop photovoltaic (RTPV) systems in a low voltage (LV) distribution network. A detailed investigation is carried out under three different cases for RTPV deployment at each load node as 1) fixed rating per phase; 2) rating proportional to the load at each node; 3) optimum rating obtained using an optimization algorithm. The objectives considered for the optimal selection of RTPV ratings are energy loss minimization and voltage unbalance across three phases apart from active and reactive power optimization. The RTPV systems are operated under volt-VAR control, to achieve the optimum power quality along with minimum losses. The network selected for the above study is IEEE 13 bus system so that the impact on each line and load is monitored. After analysis of the obtained results of 13 bus system, further investigation is carried out for IEEE 8500 node network to validate the proposed concepts. The obtained results are presented to demonstrate the effectiveness of optimum deployment of large number of RTPV systems in a LV distribution network to have good voltage profile and minimum energy loss under variable penetration level, load and solar irradiance.
Uploads
Papers by Sanjeev S. Chauhan