A BL-CSC Converter-Fed BLDC Motor Drive With Power Factor Correction

This paper presents a single-stage isolated power factor corrected power supply (SSIPP) fed permanent magnet brushless DC (BLDC) motor drive. An advantage of fast voltage regulation with single voltage control loop of SSIPP is utilised to develop a power factor correction (PFC) based BLDC motor drive. The speed of BLDC motor is controlled by varying the DC link voltage of the voltage source inverter (VSI) feeding BLDC motor using a single voltage sensor. A boost-flyback SSIPP operating in discontinuous inductor current mode (DICM) is used for the voltage control with improved power quality at AC mains. A fundamental frequency switching of VSI is used instead of pulse width modulation (PWM) switching to avoid high frequency switching losses in it. The performance of the proposed BLDC motor drive is evaluated for wide range of speed control with power quality indices with-in the recommended limits of international power quality standards such as IEC 61000-3-2.

This manuscript deals about the configuration of a power factor correction (PFC) converter feeding a drive of brushless DC (BLDC) motor for medium and low power equipment. The front-end PFC converter working in discontinuous inductor current mode (DICM) is applied for regulating the DC link voltage and PFC is achieved inherently. The BLDC motor speed is adjusted by regulating the DC link voltage of voltage source inverter (VSI) feeding to motor. The DC link voltage of drive system is maintained by a single DC voltage actuator. A prototype is developed for evaluating the performances of anticipated drive for the speed control over a broad range. The performance of anticipated drive is also validated for its function at varying AC mains voltages (90V–265V). Test results for power quality (PQ) parameters are compared with restrictions of power quality standard IEC 61000-3-2.

This study deals with a reduced sensor configuration of a power factor correction (PFC) based zeta converter for brushless DC (BLDC) motor drive for low power applications. The speed of the BLDC motor is controlled by varying the dc‐link voltage of the voltage source inverter (VSI) feeding BLDC motor drive. A low‐frequency switching of the VSI is used for achieving the electronic commutation of BLDC motor for reduced switching losses. The PFC‐based zeta converter is designed to operate in discontinuous inductor current mode; thus utilising a voltage follower approach which requires a single voltage sensor for dc‐link voltage control and PFC operation. The proposed drive is designed to operate over a wide range of speed control with improved power quality at ac mains. The performance of the proposed drive is validated with experimental results obtained on a developed prototype of PFC converter.

A power factor correction (PFC) based bridgeless Sheppard-Taylor converter for feeding brushless DC (BLDC) motor dive is presented in this work. The voltage of DC bus of the voltage source inverter (VSI) feeding BLDC motor is adjusted for speed control. The BLDC motor is electronically commutated to operate the VSI in low switching frequency for reducing the switching losses in it. The proposed PFC converter is operated in discontinuous inductor current mode (DICM) for inherent power factor correction using a single voltage sensor. The performance of the proposed PFC converter feeding BLDC motor drive is evaluated for control of speed over a wide range. A unity power factor is achieved with power quality indices acceptable within the limits of IEC 61000-3-2.

This paper presents a non-isolated boost integrated buck rectifier/energy storage DC-DC (NI-BIBRED) converter fed brushless DC (BLDC) motor dive. The speed of proposed drive is controlled by adjusting the DC link voltage of voltage source inverter (VSI) feeding a BLDC motor. The BLDC motor is electronically commutated to operate the VSI in fundamental frequency switching for reduced switching losses in it. The proposed NI-BIFRED converter is designed to operate in triple discontinuous inductor current mode (DICM) to act as an inherent power factor pre-regulator using a single voltage sensor for DC link voltage control. The performance of proposed drive is evaluated for a wide range of speed control at varying supply voltages. An improved power quality is achieved with power quality indices within the limits of IEC 61000-3-2.

The Landsman converter based on a power factor correction (PFC) in bridgeless (BL) configuration feeding a brushless dc motor (BLDCM) drive is proposed for low-power household appliances. The conduction losses associated with diodes are reduced by BL configuration and switching losses of solid-state switches of voltage source inverter are reduced by the use of low frequency switching signals in electronic commutation for the BLDCM. The front-end BL PFC based Landsman converter operating in the discontinuous inductor current mode is used for controlling the dc link voltage, and PFC is attained naturally with reduced conduction losses and switch stress. A single voltage sensor is used for controlling the dc bus voltage. A prototype is developed to study performance of the system for wide range speed control and power quality improvement. The experimental performance of BLDCM is presented for its functions at varying voltages of ac mains (90–265 V) to adhere to the limits defined by IEC61000-3-2 standard.

The brushless DC (BLDC) motor can be controlled either by fixed dc link voltage control with Pulse Width Modulation (PWM) or by variable dc link voltage control with Pulse Amplitude Modulation (PAM). But neither of these can be a proper method for BLDC motor. Since the PWM control induces high current and torque ripple at high speeds and PAM control limits its application at low speeds due to the small DC link voltage generation. So a drive method merging both these methods is planned with Power Factor Correction (PFC). The motor driver consists of a Bridgeless Canonical Switching Cell (BL-CSC) PFC converter and a 3-phase PWM inverter. The BL-CSC PFC converter operates on Discontinuous Continuous Mode (DCM) to achieve unity power factor at the ac mains. The speed of the BLDC motor is controlled either on the converter side by varying the input voltage of the PWM inverter or on the motor side by keeping the inverter input constant. And the bridgeless configuration of the Canonical Switching Cell (CSC) converter provides less power losses due to the partial removal of diode bridge rectifier (DBR). The hybrid drive method or the dual mode control has been analyzed using MATLAB Simulink. The PFC operation is verified and both load & supply variations are also illustrated in this paper.

This work presents a low cost PFC (Power Factor Correction) based BLDCM (Brushless DC Motor) drive targeting low power household appliances. Development of a highly efficient BLDCM drive with minimum amount of sensing requirement is the primary objective of this work. The switching losses in the VSI (Voltage Source Inverter) feeding BLDCM is reduced by electronically commutating the BLDCM and controlling its speed by controlling the voltage of the DC bus. A PFC buck-boost converter is used as a front-end converter due to its simplicity in design, minimum number of component count and its ability to buck and boost the voltage to control the speed over a wide range. The PFC buck-boost converter operating in DICM (Discontinuous Inductor Current Mode) is used for the control of DC bus voltage. An inherent PFC is achieved for variation of speed over a wide range at universal AC mains (90–265 V). The obtained PQ (Power Quality) indices are within the recommended limits of international PQ standards IEC 61000–3-2. The performance of proposed BLDCM drive is simulated in MATLAB/Simulink environment and validated experimentally on a developed prototype of the drive.

This paper presents an IHQRR (Integrated High Quality Rectifier Regulator) BIFRED (Boost Integrated Flyback Rectifier Energy Storage DC-DC) converter fed BLDC (Brushless DC) motor drive. A reduced sensor topology is derived by utilizing a BIFRED converter to operate in a dual DCM (Discontinuous Conduction Mode) thus utilizing a voltage follower approach for the PFC (Power Factor Correction) and voltage control. A new approach for speed control is proposed using a single voltage sensor. The speed of the BLDC motor drive is controlled by varying the DC link voltage of the front end converter. Moreover, fundamental frequency switching of the VSI's (Voltage Source Inverter) switches is used for the electronic commutation of the BLDC motor which reduces the switching losses in the VSI. The proposed drive is designed for a wide range of speed control with an improved power quality at the AC mains which falls within the recommended limits imposed by international power quality standards such as IEC 61000-3-2.

In this work, a new PFC (Power Factor Correction) Bridgeless Buck-Boost converter is designed and proposed for BLDC (Brushless Direct Current) Motor Drive applications. In this topology, two power electronic devices are used to control negative and positive cycles of input single phase supply. This alternately controls the input DC voltage of the inverter. Speed control of BLDC machine is achieved by varying the inverter DC link voltage. In this design, inverter consists of only two legs instead of three legs and third phase of the motor is connected to the midpoint of capacitors and inverter is operating at fundamental switching frequency. This topology is designed to operate in DICM mode (Discontinuous Inductor Current Mode) to provide an inherent power factor correction at input AC supply side. Proposed circuit is modeled in Matlab/Simulink tool by using Simpower system and Xilinx block set.

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 singlephase AC mains through diode bridge rectifier (DBR) and connected to a voltage source inverter (VSI) feeding the PMBLDCM. The proposed PFC half-bridge converter based PMBLDCM drive is controlled to have the variable speed operation of the compressor for efficiency improvement of the air conditioning system. The control scheme for the PFC converter based PMBLDCM drive is designed, modeled and its simulation is carried out in Matlab-Simulink environment for an air conditioner compressor driven through a 1.5 kW, 1500 rpm PMBLDC motor. The obtained results are presented to validate the effectiveness of the proposed adjustable speed drive in wide range of the speed and an AC input voltage. An improved power quality is observed with almost unity power factor and improved efficiency of the drive in a wide range of the speed and an AC input voltage.

Electric vehicles are currently being developed with the concept of saving energy and environmentally responsible. Electric vehicles use electric motors as the main driving motor. The electric motor which is currently increasingly used is the Brushless Direct Current (BLDC) motor. The BLDC motor controller is more expensive than the price of the BLDC motor itself. The BLDC motor controller has a working temperature range when working. The purpose of this study was to analyze the effect of variations in load values and the speed of electric vehicles on the temperature of the BLDC motor controller. This research was conducted by the experimental method by giving a treatment, then evaluating the effect caused on an object of research. The results showed that there was an influence of load value variations on the BLDC motor controller temperature. Values that look significant are at speeds of 0.5 m/sec and 2.5 m/sec starting from 3 kg to 5 kg. There is no influence on the variation of speed values on the temperature of the BLDC motor controller. The temperature value is stable at 2 kg and 3 kg loads with speed variations from 0.5 m/sec to 2.5 m/sec. Simultaneously variations in load and speed values affect the temperature of the BLDC motor controller by 57.7% with the lowest temperature value at 0.5 m/s and a load of 1 kg with a temperature of 33.34℃ and the highest temperature value at a speed of 2.5 m/sec and a load of 5 kg with a temperature of 37.58℃. Keywords: Electric vehicles, controllers, BLDC motors, temperature.

The electric vehicle’s overall efficiency can be augmented through the implementation of the regenerative braking system (RBS), which serves to extend the drive range. This paper explores a method for further increasing said range by implementing a roof‐mounted photovoltaic (PV) system in conjunction with RBS, resulting in an impressive 25.14% increase to the vehicle’s driving distance. The roof‐mounted PV and regenerative braking work together to charge the dual battery pack present within the vehicle, following a specific sequence as dictated by its controller. Maximum energy is extracted from the PV module via employment of a particle swarm optimization (PSO)‐based maximum power point tracking (MPPT) algorithm, while propulsion is provided through utilization of a brushless direct current (BLDC) motor driven by reduced switch voltage source inverter (VSI). The BLDC motor itself is controlled utilizing field‐oriented control (FoC), with hybrid ANN‐PID and Fuzzy‐PID (HAP‐FUP) controllers employed at the outer loop; furthermore, HAP‐FUP controller performance was compared favorably against other top controllers such as model predictive controller (MPC), sliding mode controller (SMC), and conventional PID controller, ultimately demonstrating superior performance when it comes to reducing rise time and settling time of vehicle speed.

Brushless DC (BLDC) Motor is widely used in home appliance, robot, and vehicle industry due to the merits of high power density, low noise, and simple controllability. A demands for the motor, especially slim-type BLDC motor, is expected to increase continuously since the minimizing trend of the actuators is getting attention from various applications. Because a phase inductance of the slim-type BLDC motor is large, it causes a lagging of current compared with back-electromotive force (EMF) in wide range of speed. As a result, there is a problem that reduces the motor efficiency and increases the phase current. Particularly the problem is more serious in high speed range and heavy load condition. This paper proposed control scheme for high efficiency of slim type BLDC motor which can resolve the problems as mentioned above. To synchronize the phase between the current and back-EMF of BLDC motor, it proposed lead angle control method by using current dynamics characteristic. Also, it represented the accurate calculating method of lead angle by using only the maximum value of phase current and information of DC-link voltage. For the verification of the proposed control scheme, various simulations and experiments are employed. As a result, the efficiency improvement of slim type BLDC motor is confirmed.

Brushless Direct Current (BLDC) motor is superior to carbon brushed DC motors, such as high efficiency, more speed range, less maintenance, longer life etc. This is because BLDC motor has electronic commutation and thus, does not have to overcome friction unlike the brushed DC motor. Thus, they find application in many areas such as Electric Vehicles and Robotics. However, a disadvantage of BLDC motor is that it requires a controller for electronic commutation which can be expensive and also increases the complexity of the implementation. The BLDC motors which are controlled by classical controllers suffer from problems of parametric variation during commutation and torque ripple in the output. The project aims to design a Robust controller for BLDC motor speed control so as to improve the output of BLDC motor.