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In this paper, implementation of a virtual resistance controller for DC-DC boost converter Dahono 1 to improve the damping during transient response is proposed. The virtual resistance is developed by using pole placement and root locus techniques to obtain the desired transient response for the converter. The model that considering component non-idealities then established. In order to verify the...
In more electric aircraft (MEA), three phase PFC rectifiers of several kilowatts are required. In this paper, analysis and design of a single stage three phase PFC interleaved half controlled boost converter for aircraft application is presented. The proposed converter uses the voltage follower approach i.e it is operated in Discontinuous Conduction Mode (DCM). This avoids the inner current control...
This paper is concerned with modification of the One Cycle Controller for DCM Boost high quality rectifier. With the proposed control circuit the boost converter can attain a near unity power factor and near zero total harmonic distortion. This paper presents the theoretical analysis, simulation and experimental results.
In this paper, a H∞ robust controller is designed for high-gain boost converter (HGBC) using mixed-sensitivity method. This controller design is based on the model, which uses a linear time-invariant approximation of nonlinear time-variant PWM converter that describes approximately the behavior of the system. The design of voltage-mode controller for boost converter is challenging, as its duty cycle...
Renewable energy sources are obviously accepted as clean energy sources of future. The solar energy is the most popular among other renewable energy sources in all over the world. Many studies are performed on photovoltaics (PVs) and solar energy systems. Inverter is the most important power converter section of photovoltaic systems in terms of efficiency in changing weather conditions. This study...
An AC microgrid connected to a solar energy conversion system (SECS) and a battery energy storage system (BESS) with a novel energy management and control strategy is being presented in this paper. This configuration aims at feeding fixed power to the grid, thus reducing the extra burden on the grid created by local loads. The first stage boosts the PV voltage and harvests maximum power (Pmax) from...
It is known that energy source used in car today comes from fuel, which generates pollution to the environment. The scientists have forecasted that the amount of oil will be decreasing in the future. In the present, scientists and engineers seek for new energy sources to reimburse oil. Causing no harm to the environment is the first priority. To overcome this problem, the electric vehicle is the popular...
The Non-Conventional sources such as solar energy has been replacement and best exploited electric source. The solar electric power required DC-DC converter for production, controllable and regulation of variable solar electric energy. The single ended boost converter has been replaced by SEPIC converter to overcome the problem associated with DC-DC converter. The problem associated with DC converter...
In high power and high dynamics applications (such UPS or Welding Machine) to reduce line current harmonics, power factor correction PFC regulators are essential. This paper presents an innovative control law for a single-phase PFC boost converter. This kind of system is a nonlinear behavior. Classically, to control the voltage and the current in the converter, a linearized technique is often used...
The controller of a Conventional Unity Power factor correction (PFC) rectifier needs three feedback signals sensed from the converter, i.e., rectified input voltage, output voltage and input inductor current. Inductor current is sensed using current sensors, which are often expensive. Eliminating current sensors in PFC circuits is a subject of research interest. This paper gives a novel technique...
Applications of the multi-input converters are becoming popular due to their conformity to renewable energy systems. This paper proposes a new topology of double-input boost converters with continuous input current, which is intended to be used for renewable power sources. The topology is derived from two dc-dc converter configurations: boost dc-dc converter and Y-source dc-dc converter. In the proposed...
This paper presents an efficient thermal energy harvesting IC (EHIC) that supports a battery-less μWatt system-on-chips. The EHIC consists of an inductor-based DC-DC converter that boosts a low input voltage to a suitable output voltage level. Further, a switched capacitor buck converter is utilized to regulate the boost converter output voltage and to support multiple output voltage levels, namely...
The high step-up converter is inevitable in a photovoltaic system since it requires a sufficiently high step-up conversion. A high step up converter with coupled inductors could be used for this purpose due to its inherent advantages. It acts as an efficient interface between the PV system and the grid. The output obtained in such a system is found to be fluctuating with load variations. This could...
In this paper, the main reason why AC electricity was accepted as the form of choice for the modern electric power system is the magnetic transformer. The inability to conveniently change voltage levels became one of the major drawbacks of Edison's early DC system concept. The DC transformer can be a device that, like its AC counterpart, provides lossless transfer of energy between circuits at different...
Renewable energy sources are widely used in power generation. In this paper Battery storage system has a major role with Bidirectional converter. Battery energy storage has been widely applied in various applications such as Uninterruptible Power Supplies (UPS). These systems are standard solution when total outage or voltage sag compensation is required. Over the past decades an interest is growing...
This paper proposes a method to achieve maximum power point tracking (MPPT) function by “tricking” inexpensive commercial-off-the-shelf (COTS) current mode control regulators. In the commercial market, there are many such inexpensive regulators, but they are designed for the output voltage control. The proposed method utilizes a voltage signal from an additional external microcontroller to regulate...
With exhausting fossil fuels and concerns relating environment degradation the use of renewable sources has become statutory. Solar PV being easily and freely available is propitious for various applications. Thus a standalone PV system with novel control is proposed for dc applications. It consists of DC-DC converters in forward power stage, one for boosting PV voltage and bidirectional interface...
A ZCS boost converter using two auxiliary switches, for active power factor correction (APFC), is proposed in this paper. All the switching devices used in this converter are turned-on and turned-off at ZCS with minimum current stress. The boost rectifier diode is also operated under soft-switched condition. The boost switch and one of the auxiliary switches have a common drive and are turned on simultaneously...
Grid integration with Photo Voltaic (PV) and Battery energy conversion system focusing on two aspects namely (i) multi-functional features of a bidirectional AC-DC converter working as interface between the PV & battery pack and AC grid sytem, (ii) MPPT tracking performance of boost DC-DC converter with less current ripple are presented in this paper. The PV side Boost Converter is controlled...
A recent EV trend is to increase the operating voltage of a propulsion motor to improve the efficiency and performance. To feed a high voltage to motor control unit, it generally employs a front-end bidirectional converter. Because the boosting operation of the converter produces a high output voltage, the converter needs an output capacitor, which has a high working voltage resulted in cost increasing...
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