Single-switch inverters such as the conventional class E inverter are often highly load sensitive, and maintain zero-voltage switching over only a narrow range of load resistances. This paper introduces a design methodology that enables rapid synthesis of class E and related single-switch inverters that maintain ZVS operation over a wide range of resistive loads. We treat the design of ClassE i...

Multilevel inverters have become more popular over the years in electric high power application with the promise of less disturbances and the possibility to function at lower switching frequencies than ordinary two-level inverters. Multilevel inverters has been introduced as static high-power inverters for medium to high voltage applications such as large electric drives, reactive power compens...

Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) technique is one of the control techniques for inverters. It is mainly used for reducing the harmonic content in single phase and three phase inverters and to improve the power quality. The selection of switching angles for eliminating particular harmonic is difficult. The proposed method uses one of the soft computing techniques Ge...

Analysis and minimization of output current ripple of multiphase carrier-based PWM inverters are presented in this paper. Analytical expression of rms value of output current ripple of multiphase PWM inverters as a function of the reference signal is first derived. Based on this expression, it is shown that a pure sinusoidal signal is the optimum reference signal that results in minimum output ...

This paper deals with the Direct Torque Control (DTC) of Brushless DC (BLDC) motor drives fed by four-switch inverters (also known as B4inverters) rather than six-switch inverters (also known as B6 inverters) in conventional drives. The principle of operation of the BLDC motor is firstly recalled considering both cases of B6and B4-inverters in the armature, with emphasis on the twoand three-pha...

Takashi Kimura Ryuichi Saitou Kenji Kubo Kinya Nakatsu Hideaki Ishikawa Kaname Sasaki OVERVIEW: Green vehicles have become familiar sights on the road in recent years, with growing sales of HEVs and the arrival of the fi rst mass production BEVs. With environmental regulations on CO2 (fuel economy) and exhaust emissions also becoming increasingly stringent, sales of these green vehicles are set...

Dead-time is necessary to prevent the short circuit of the power supply in PWM Inverters or converters. But, it will result in output voltage deviations and in case of lower values of current, lower order harmonics will be taken into account. So, dead-time elimination is required in all PWM Inverters or converters. This paper is dealing with a summary of dead-time effects in PWM inverters and v...

Dieser Artikel befasst sich mit den leitungsgebundenen Störungen eines KFZ-Inverters. Untersucht wird dabei ein an die CISPR 25 angelehnter Testaufbau mit ungeschirmten Kabeln. Anhand des Aufbaus werden die Ursachen leitungsgebundener Störungen erläutert. Es werden die Entstehung und Ausbreitung der Gleichund Gegentaktstörung in diesem Aufbau beschrieben und die verwendete Ansteuerung des Inver...

Solar inverters have also experienced important transformations driven by price pressures. For example, power density has increased from 0.08 kW/kg to 0.5kW/kg, which indicates a clear reduction in material usage [2]. In Europe, however, solar inverters currently only comprise 10–15% of the total cost of a typical 100kWp solar installation [1]. So, for solar inverters to meaningfully contribute...

As the deployment of distributed generation continues, an increasing number of DC/AC power inverters will be interfaced into the electric grid. Groupings of these power inverters, along with distributed storage and load, are referred to as microgrids. Microgrids offer the potential for unprecedented reliability and flexibility, but also pose new control challenges. Inverters in microgrids must ...