Space vector modulation of dual inverter with battery and capacitor across DC buses

Ohto, Yoshiaki; Noguchi, Toshihiko; Sasaya, Takanari

doi:10.1109/peds.2017.8289098

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…The DWM is powered by two inverters with reduced ratings fed by two power sources, a fuel cell stack, and a battery pack, so the main DC-DC converter used in the conventional drivetrain is eliminated. The energy flow between the three ports can be adjusted by controlling the two winding sets synergistically [21]. Sudden changes in the output current can cause variation in the water and gas content inside a PEMFC, which represents the driving force for extensive lifespan degradation.…”

Section: System Frameworkmentioning

confidence: 99%

Steady-State Control of Fuel Cell Based on Boost Mode of a Dual Winding Motor

Cheng

Chang

et al. 2021

Energies

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In recent years, a dual winding motor drive has been proposed in the field of fuel cell vehicles due to its advantages of good performance and high robustness. This new topology and its basic control method have been widely investigated. However, the previous research has not considered the current dynamic property of a fuel cell when studying the power sharing control method, but this is an important research objective for fuel cell durability. Considering the current change principle of a fuel cell, an optimal steady-state control method based on a new dual winding motor architecture boost charging is proposed to optimize the fuel cell life. In addition, in view of the current circulation problem of the fuel cell side winding in the boost mode, a Bang-Bang-PI control algorithm with a relatively constant reference value is proposed to realize the current sharing control. On this basis, the optimized control of the output current ripple of the fuel cell is realized to ensure the steady-state of the proton exchange membrane fuel cell (PEMFC). Finally, the results show that this method can control the stability of the fuel cell efficiently.

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Section: System Frameworkmentioning

confidence: 99%

Steady-State Control of Fuel Cell Based on Boost Mode of a Dual Winding Motor

Cheng

Chang

et al. 2021

Energies

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“…Recent research related to the dual converter only considered the movement of reference vector within the 'Fullyregulated Area' [18], [26], [27]. This refers to the CON 1 hexagon in Fig.…”

Section: Charge Variation Of Fcmentioning

confidence: 99%

“…However, there is no comprehensive study regarding the voltage regulation methods for dual converters. In [18], [19], [26], [27], the dual converter is considered as a whole multilevel converter for modulation. The effect of switching states on capacitor voltage is analysed but the direction of phase current is ignored in [18].…”

Section: Introductionmentioning

confidence: 99%

“…The actual current acting on the floating capacitor would vary depending on the power factor angle [27]. According to conclusions in [18], [26], [27], due to the limitation of voltage regulation and achieving multilevel operation at the same time, the voltage utilisation of this dual converter configuration is constrained to the DC-link voltage. Under this condition, the capacitor voltage, which can be substantially beneficial for aerospace applications, is underutilised.…”

Section: Introductionmentioning

confidence: 99%

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An Active Modulation Scheme to Boost Voltage Utilization of the Dual Converter With a Floating Bridge

Huang

Yang

Giangrande

et al. 2019

IEEE Trans. Ind. Electron.

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This paper proposes a capacitor voltage regulation method for the dual converter with a floating bridge for aerospace applications. This topology has previously been reported, but with a constrained voltage utilisation factor due to the need for capacitor voltage regulations. In this paper, the effect of switching states on the voltage variation of capacitor is quantitatively modelled and an enhanced space vector modulation scheme with current feedback is proposed to achieve an active control of the floating capacitor voltages. This proposed method also allows further exploitation and utilisation of converter voltage. The relationship between the allowed modulation index of dual converter and load power factor is obtained and expressed using a fitted polynomial equation. The advantages of the proposed method include boosted voltage utilisation and superior performance in term of capacitor voltage balance. These advantages have been proven through simulation and experimental results on RL loads as well as with an open-end winding induction motor. The proposed modulation scheme can boost the converter voltage utilisation by at least 10% while achieving full four-level operation. More importantly, the higher available voltage allows extending the constant torque region of the motor, the further beginning of field weakening operation could be postponed.

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“…Particularly, it is indispensable to take an instantaneous motor power factor into account to control the charging or discharging modes of the capacitor [25]. However, the output multilevel voltage waveforms contain a lot of unexpected error voltage pulses during a dead time [26]. The dual-inverter system, where both inverters have a battery power source across the dc bus, has no error voltage pulses because the SVM can be implemented without taking capacitor voltage control into account [12], [13], [18].…”

mentioning

confidence: 99%

Space Vector Modulation of Dual-Inverter System Focusing on Improvement of Multilevel Voltage Waveforms

Oto

Noguchi

Sasaya

et al. 2019

IEEE Trans. Ind. Electron.

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A space vector modulation (SVM) technique of a dual-inverter system for an open-end winding motor drive is described in this paper, where one inverter has a battery power source and the other has an only capacitor across the dc bus. The SVM must be achieved to operate the motor with field-oriented control and simultaneously to control the capacitor voltage at a constant value by using redundant switching states of the dual-inverter system. The control of the capacitor voltage is carried out by selecting a charging or a discharging mode in each redundant switching state, taking the instantaneous motor power factor into account. In addition, it is also required to reduce the error voltage pulses, which are generated in output multilevel voltage waveforms during the dead time. The compensation method of the existing dead-time scheme and the improved SVM sequence to reduce the error voltage vectors are proposed in this paper. The proposed methods are examined through several experimental tests and are confirmed to generate superior output voltage waveforms from the viewpoint of the measured total harmonic distortion and dv/dt.

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Space vector modulation of dual inverter with battery and capacitor across DC buses

Cited by 12 publications

References 7 publications

Steady-State Control of Fuel Cell Based on Boost Mode of a Dual Winding Motor

Steady-State Control of Fuel Cell Based on Boost Mode of a Dual Winding Motor

An Active Modulation Scheme to Boost Voltage Utilization of the Dual Converter With a Floating Bridge

Space Vector Modulation of Dual-Inverter System Focusing on Improvement of Multilevel Voltage Waveforms

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