A Novel ZVS Turn-on Triangular Current Mode Control with Phase Synchronization for Three Level Inverters

Haryani, Nidhi; Ohn, Sung Jae; Hu, Jiewen; Rankin, Paul; Burgos, Rolando; Boroyevich, Dushan

doi:10.1109/ecce.2018.8557858

Cited by 19 publications

(9 citation statements)

References 5 publications

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“…Alternative concepts for 3-Φ, soft-switched converters do not inherently filter common-mode (although the CM noise is analyzed in [36]), but these approaches are promising [16,18] and should be evaluated directly against the proposed S-TCM scheme on switching losses, conduction losses, and filter volume and losses with both differential-and common-mode filtering. Only this complete, robust comparison can determine the right soft-switched modulation scheme to replace CCM in this critical power conversion application suite.…”

Section: Discussionmentioning

confidence: 99%

“…(12) and the local switching frequency is still given by Eqn. (16). The current limits i + and i -, however, change and, with φ = 0 as the worst-case for guaranteeing ZVS, the operating area can be extended for cos φ < 1.…”

Section: A Sinusoidal Modulation With Phase-shifted Currentmentioning

confidence: 99%

“…1(c.i), achieves ZVS with the basic half-bridge converter structure and without additional auxiliary circuits. Numerous other schemes for introducing ZVS have been proposed -including the use of auxiliary circuitry [13], an unfolder-based TCM scheme for single-phase rectifiers [14], a T-type-architecture circuit for TCM [15,16], complex current control approaches based on boundary conduction mode (BCM) or critical conduction mode (CRM) [17]- [19], and a decoupled model for simplified control [20] -but TCM is still considered the state-of-the-art and is the most widelyused commercially.…”

Section: Introductionmentioning

confidence: 99%

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Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters

Haider

Anderson

Mirić

et al. 2020

IEEE Open J. Power Electron.

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For three-phase AC-DC power conversion, the widely-used continuous current mode (CCM) modulation scheme results in relatively high semiconductor losses from hardswitching each device during half of the mains cycle. Triangular current mode (TCM) modulation, where the inductor current reverses polarity before turn-off, achieves zero-voltage-switching (ZVS) but at the expense of a wide switching frequency variation (15× for the three-phase design considered here), complicating filter design and compliance with EMI regulations. In this paper, we propose a new modulation scheme, sinusoidal triangular current mode (S-TCM), that achieves soft-switching, keeps the maximum switching frequency below the 150 kHz EMI regulatory band, and limits the switching frequency variation to only 3×. Under S-TCM, three specific modulation schemes are analyzed, and a loss-optimized weighting of the current bands across load is identified. The 2.2 kW S-TCM phase-leg hardware demonstrator achieves 99.7 % semiconductor efficiency, with the semiconductor losses accurately analytically estimated within 10 % (0.3 W). Relative to a CCM design, the required filter inductance is 6× lower, the inductor volume is 37 % smaller, and the semiconductor losses are 55 % smaller for a simultaneous improvement in power density and efficiency.

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Section: Discussionmentioning

confidence: 99%

Section: A Sinusoidal Modulation With Phase-shifted Currentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters

Haider

Anderson

Mirić

et al. 2020

IEEE Open J. Power Electron.

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“…Hence, the converter is controlled by means of a variable switching frequency f sw and a duty cycle D LV according to (3), as usually referred to as triangular current mode (TCM) operation [16,23] (cf. Figure 4).…”

Section: Drive Mode Operationmentioning

confidence: 99%

Three-Port Series-Resonant DC/DC Converter for Automotive Charging Applications

Schäfer

Kolar

2021

Electronics

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In the energy distribution grid of electric vehicles (EVs), multiple different voltage potentials need to be interconnected, to allow arbitrary power flow between the various energy sources and the different electrical loads. However, between the different potentials, galvanic isolation is absolutely necessary, either due to safety reasons and/or due to different grounding schemes. This paper presents an isolated three-port DC/DC converter topology, which, in combination with an upstream PFC rectifier, can be used as combined EV charger for interconnecting the single-phase AC mains, the high-voltage (HV) battery and the low-voltage (LV) bus in EVs. The proposed topology comprises two synergetically controlled and magnetically coupled converter parts, namely, a series-resonant converter between the PFC-sided DC-link capacitor and the HV battery, as well as a phase-shifted full-bridge circuit equivalent in the LV port, and is mainly characterized by simplicity in terms of control and circuit complexity. For this converter, a simple soft switching modulation scheme is proposed and comprehensively analyzed, in consideration of all parasitic components of a real converter implementation. Based on this analysis, the design of a 3.6kW, 500V/ 500V/ 15V prototype is discussed, striving for the highest possible power density and as low as possible manufacturing costs, by using PCB-integrated windings for all magnetic components. The hardware demonstrator achieves a measured full-load efficiency in charge mode of 96.5% for nominal operating conditions and a power density of 16.4kW/L.

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“…So as to attain a reliable unit that is incorporated with each PV panel, comprises of huge life span and a micro inverter of compact size is preferred. For attaining the necessary output voltage in the courtesy of varying the solar input conditions,(power conditioning systems) PCS are thus employed as an system of interfacing between PV panels and grid [8].While this integration method has the benefit of improving the efficiency by neither attaining soft-switching nor diverse control operations, and these are having the limitations of decreasing the controller and power density complication [9]. Hence, the ZVS alone is not attained properly for the operation of main switches.…”

Section: Introductionmentioning

confidence: 99%

SEPIC-based DC-DC Converter with Soft Switching Operation for Wide Conversion Operation of E-Automobiles

Raja¹,

Karpagam

2022

Preprint

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Typically, renewable energy offers clean energy along with effective and optimal utilization on comparing other conventional sources of energy. On relating other renewable sources, solar photovoltaic (PV) based generation of power is accessible readily. This is employed widely for charging, lighting, and pumping of solar and so on. The issue associated with energy is minimized by using pollution-free renewable sources of energy without having emission and the maximum output power is attained using optimization process. For this purpose, this article presents a SEPIC based DC-to-DC converter design with the soft switching operation for the wide conversion operation of E-Automobiles. The solar PV source is given to boost converter with the use of Hierarchical Multi-Heuristic Chicken Swarm Optimization (HMH-CSO) based Maximum Power Point Tracking (MPPT) scheme. The converted source is given to SEPIC converter at which the Fuzzy Logic Controller (FLC) is employed. A SEPIC converter is a DC-to-DC converter that converts the fixed range of DC supply to the variable range of DC supply using duty ratio. The zero-voltage source (ZVS) soft switching operation of converter is provided. The converted output is inverted by means of three-phase inverter at which the generation of pulse width modulation (PWM) is made by means of FLC controller employed. The inverted output is given to the load (BLDC motor) by filtering using Low Pass Filter (LPF). Thus, an efficient generation of power is made and is given to the load of BLDC motor side. The performance analysis is made for traditional PID (Proportional-Integral-Derivative) controller and FLC controller and the outcomes attained for both controllers are compared to show the efficiency of proposed FLC controller. The performance is estimated in terms of Rise time, peak time, peak overshoot, settling time, delay time, output voltage, output current, and steady state error. The comparative analysis shows that proposed design using FLC controller offers better outcome than others.

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A Novel ZVS Turn-on Triangular Current Mode Control with Phase Synchronization for Three Level Inverters

Cited by 19 publications

References 5 publications

Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters

Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters

Three-Port Series-Resonant DC/DC Converter for Automotive Charging Applications

SEPIC-based DC-DC Converter with Soft Switching Operation for Wide Conversion Operation of E-Automobiles

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