Compatibility Issues Between the Filter and PWM Unit in Three-Phase AC Motor Drives Utilizing the Pure Sine Filter Configuration

Inserted between the inverter and the ac motor for the purpose of providing clean sinusoidal voltage at the motor terminals, the pure sine filter (PSF) involves common-mode and differential-mode suppression components. When using PSF in a motor drive and employing advanced pulsewidth modulation (PWM) techniques with discontinuous modulation waveforms, a large common-mode current may circulate through the inverter and the filter resulting in overcurrent stress in the inverter and significant acoustic noise in the filter inductors. This paper first discusses the PSF and advanced PWM techniques, then investigates the performance issues that may arise when combining advanced discontinuous PWM methods with PSF and provides a curement for the overcurrent stress problems by means of a rate of change limiter. The simulations and detailed experimental studies illustrate the inverter overcurrent stress problems and the feasibility of the proposed method to cure the problems. Via experimental performance evaluation of various PWM methods, the paper also suggests, along with PSF, the use of advanced continuous and discontinuous PWM methods with reduced common-mode voltage for the purpose of performance enhancement and filter size reduction.

[1]  J. Holtz.  PULSE WIDTH MODULATION FOR ELECTRONIC POWER CONVERSION , 2013 .

[2]  R A Lukaszewski,et al.  Common-Mode Voltage Reduction PWM Algorithm for AC Drives , 2010, IEEE Transactions on Industry Applications.

[3]  A. Muetze,et al.  Don't lose your bearings , 2006, IEEE Industry Applications Magazine.

[4]  H. Akagi,et al.  A Passive EMI Filter for Eliminating Both Bearing Current and Ground Leakage Current From an Inverter-Driven Motor , 2005, IEEE Transactions on Power Electronics.

[5]  Hirofumi Akagi,et al.  An active circuit for cancellation of common-mode voltage generated by a PWM inverter , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[6]  Ahmet M. Hava,et al.  A high performance generalized discontinuous PWM algorithm , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[7]  Yen-Shin Lai,et al.  Optimal common-mode Voltage reduction PWM technique for inverter control with consideration of the dead-time effects-part I: basic development , 2004, IEEE Transactions on Industry Applications.

[8]  David Leggate,et al.  Interaction of drive modulation and cable parameters on AC motor transients , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[9]  Y. Murai,et al.  Leakage current reduction for a high-frequency carrier inverter feeding an induction motor , 1992 .

[10]  A. Muetze,et al.  Don’t lose your bearings – Mitigation techniques for bearing currents in inverter-supplied drive systems , 2006 .

[11]  A.M. Hava,et al.  Performance Analysis of Reduced Common-Mode Voltage PWM Methods and Comparison With Standard PWM Methods for Three-Phase Voltage-Source Inverters , 2009, IEEE Transactions on Power Electronics.

[12]  H. Akagi,et al.  Design and performance of a passive EMI filter for use with a voltage-source PWM inverter having sinusoidal output voltage and zero common-mode voltage , 2004, IEEE Transactions on Power Electronics.

[13]  Werner Leonhard,et al.  Control of Electrical Drives , 1990 .

[14]  J. Holtz,et al.  Pulsewidth modulation for electronic power conversion , 1994, Proc. IEEE.

[15]  J. Erdman,et al.  Effect of PWM inverters on AC motor bearing currents and shaft voltages , 1995, Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95.

[16]  Frede Blaabjerg,et al.  Output filters for AC adjustable speed drives , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[17]  A M Hava,et al.  A Generalized Scalar PWM Approach With Easy Implementation Features for Three-Phase, Three-Wire Voltage-Source Inverters , 2011, IEEE Transactions on Power Electronics.

[18]  H. van der Broeck,et al.  Analysis and Realization of a Pulse Width Modulator Based on Voltage Space Vectors , 1986, 1986 Annual Meeting Industry Applications Society.

[19]  A.M. Hava,et al.  A Near-State PWM Method With Reduced Switching Losses and Reduced Common-Mode Voltage for Three-Phase Voltage Source Inverters , 2009, IEEE Transactions on Industry Applications.

[20]  H. Akagi,et al.  Modeling and damping of high-frequency leakage currents in PWM inverter-fed AC motor drive systems , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[21]  Ahmet M. Hava,et al.  Simple Analytical and Graphical Methods for Carrier-Based PWM-VSI Drives , 1999 .

[22]  M. M. Swamy,et al.  Common mode current attenuation techniques for use with PWM drives , 2001 .

[23]  A. M. Hava,et al.  A High-Performance PWM Algorithm for Common-Mode Voltage Reduction in Three-Phase Voltage Source Inverters , 2008, IEEE Transactions on Power Electronics.